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TL431 family SOT23 Adjustable precision shunt regulator Rev. 5 — 01 September 2015 Product data sheet 1. Product profile 1.1 General description Three-terminal shunt regulator family with an output voltage range between V and 36V, ref to be set by two external resistors. • The TL431xDBZR types feature an enhanced stability area with a very low loadcapacity requirement. • The TL431xFDT types offer an enhanced stability area and a higher ElectroMagneticInterference(EMI) ruggedness, for example, for Switch Mode Power Supply(SMPS) applications. • The TL431xSDT types are designed for standard requirements and linear applications. Table 1. Product overview Reference Temperature range (T ) Pinning amb voltage configuration 0(cid:3)(cid:3)(cid:113)C to 70(cid:113)C (cid:16)40(cid:113)C to 85(cid:113)C (cid:16)40(cid:113)C to 125(cid:113)C tolerance (V ) (seeTable3) ref 2% TL431CDBZR TL431IDBZR TL431QDBZR normal pinning TL431FDT normal pinning TL431MFDT mirrored pinning TL431SDT normal pinning TL431MSDT mirrored pinning 1% TL431ACDBZR TL431AIDBZR TL431AQDBZR normal pinning TL431AFDT normal pinning TL431AMFDT mirrored pinning TL431ASDT normal pinning TL431AMSDT mirrored pinning 0.5% TL431BCDBZR TL431BIDBZR TL431BQDBZR normal pinning TL431BFDT normal pinning TL431BMFDT mirrored pinning TL431BSDT normal pinning TL431BMSDT mirrored pinning

TL431 family NXP Semiconductors Adjustable precision shunt regulator 1.2 Features and benefits (cid:132) Programmable output voltage up to 36V (cid:132) Three different reference voltage tolerances: (cid:139)Standard grade: 2% (cid:139)A-Grade: 1% (cid:139)B-Grade: 0.5% (cid:132) Typical temperature drift: 6mV (in a range of 0(cid:113)C up to 70(cid:113)C) (cid:132) Low output noise (cid:132) Typical output impedance: 0.2(cid:58) (cid:132) Sink current capability: 1mAto100mA (cid:132) AEC-Q100 qualified (grade1) 1.3 Applications (cid:132) Shunt regulator (cid:132) Precision current limiter (cid:132) Precision constant current sink (cid:132) Isolated feedback loop for Switch Mode Power Supply(SMPS) 1.4 Quick reference data Table 2. Quick reference data Symbol Parameter Conditions Min Typ Max Unit V cathode-anode voltage V - 36 V KA ref I cathode current 1 - 100 mA K V reference voltage V =V ; ref KA ref I =10mA; K T =25(cid:113)C amb Standard-Grade(2%) 2440 2495 2550 mV A-Grade(1%) 2470 2495 2520 mV B-Grade(0.5%) 2483 2495 2507 mV TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 2 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator 2. Pinning information Table 3. Pinning Pin Symbol Description Simplified outline Graphic symbol Normal pinning: All types without MFDT and MSDT ending 1 k cathode 3 REF 2 REF reference a k 3 a anode 006aab355 1 2 Mirrored pinning: All types with MFDT and MSDT ending 1 REF reference 3 REF 2 k cathode a k 3 a anode 006aab355 1 2 TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 3 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator 3. Ordering information Table 4. Ordering information Type number Package Name Description Version TL431CDBZR - plastic surface-mounted package; 3leads SOT23 TL431IDBZR TL431QDBZR TL431FDT TL431MFDT TL431SDT TL431MSDT TL431ACDBZR TL431AIDBZR TL431AQDBZR TL431AFDT TL431AMFDT TL431ASDT TL431AMSDT TL431BCDBZR TL431BIDBZR TL431BQDBZR TL431BFDT TL431BMFDT TL431BSDT TL431BMSDT TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 4 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator 4. Marking Table 5. Marking codes Type number Marking code[1] Type number Marking code[1] TL431CDBZR CA* TL431ASDT RL* TL431IDBZR CB* TL431AMSDT LQ* TL431QDBZR CC* TL431BCDBZR CG* TL431FDT AR* TL431BIDBZR CH* TL431MFDT AU* TL431BQDBZR CJ* TL431SDT RM* TL431BFDT AT* TL431MSDT LR* TL431BMFDT AW* TL431ACDBZR CD* TL431BSDT MA* TL431AIDBZR CE* TL431BMSDT MB* TL431AQDBZR CF* - - TL431AFDT AS* - - TL431AMFDT AV* - - [1] * = placeholder for manufacturing site code. 5. Functional diagram The TL431family comprises a range of 3-terminal adjustable shunt regulators, with specified thermal stability over applicable automotive and commercial temperature ranges. The output voltage may be set to any value between V (approximately 2.5V) ref and 36V with two external resistors (see Figure8). These devices have a typical output impedance of0.2(cid:58).Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacements for Zener diodes in many applications like on-board regulation, adjustable power supplies and switching power supplies. CATHODE REF Vref ANODE 006aab569 Fig 1. Functional diagram TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 5 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator 6. Limiting values Table 6. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol Parameter Conditions Min Max Unit V cathode-anode voltage - 37 V KA I cathode current (cid:16)100 150 mA K I reference current (cid:16)0.05 10 mA ref P total power dissipation T (cid:100)25(cid:113)C [1] - 350 mW tot amb [2] - 580 mW [3] - 950 mW T junction temperature - 150 (cid:113)C j T ambient temperature amb TL431XCDBZR 0 +70 (cid:113)C TL431XIDBZR (cid:16)40 +85 (cid:113)C TL431XQDBZR (cid:16)40 +125 (cid:113)C TL431XFDT TL431XSDT T storage temperature (cid:16)65 +150 (cid:113)C stg [1] Device mounted on an FR4Printed-Circuit Board(PCB), single-sided copper, tin-plated and standard footprint. [2] Device mounted on an FR4 PCB, single-sided copper, tin-plated, mounting pad for anode 1cm2. [3] Device mounted on a ceramicPCB, Al2O3, standard footprint. 006aab570 1250 Ptot (mW) 1000 (1) 750 (2) 500 (3) 250 0 −75 −25 25 75 125 175 Tamb (°C) (1) CeramicPCB, Al2O3, standard footprint (2) FR4PCB, mounting pad for anode 1cm2 (3) FR4PCB, standard footprint Fig 2. Power derating curves TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 6 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator Table 7. ESD maximum ratings T =25(cid:113)C unless otherwise specified. amb Symbol Parameter Conditions Min Max Unit V electrostatic discharge voltage MIL-STD-883 - 4 kV ESD (humanbody model) 7. Recommended operating conditions Table 8. Operating conditions Symbol Parameter Conditions Min Max Unit V cathode-anode voltage V 36 V KA ref I cathode current 1 100 mA K 8. Thermal characteristics Table 9. Thermal characteristics Symbol Parameter Conditions Min Typ Max Unit R thermal resistance from in free air [1] - - 360 K/W th(j-a) junction to ambient [2] - - 216 K/W [3] - - 132 K/W R thermal resistance from [4] - - 50 K/W th(j-sp) junction to solder point [1] Device mounted on an FR4PCB, single-sided copper, tin-plated and standard footprint. [2] Device mounted on an FR4 PCB, single-sided copper, tin-plated, mounting pad for anode 1cm2. [3] Device mounted on a ceramicPCB, Al2O3, standard footprint. [4] Soldering point of anode. TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 7 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator 9. Characteristics Table 10. Characteristics T =25(cid:113)C unless otherwise specified. amb Symbol Parameter Conditions Min Typ Max Unit Standard-Grade(2%): TL431CDBZR; TL431IDBZR; TL431QDBZR; TL431FDT; TL431MFDT; TL431SDT; TL431MSDT V reference voltage V =V ; I =10mA 2440 2495 2550 mV ref KA ref K (cid:39)V reference voltage variation V =V ; I =10mA ref KA ref K TL431CDBZR T =0(cid:113)Cto70(cid:113)C - 6 16 mV amb TL431IDBZR T =(cid:16)40(cid:113)Cto85(cid:113)C - 14 34 mV amb TL431QDBZR T =(cid:16)40(cid:113)Cto125(cid:113)C amb TL431FDT TL431MFDT TL431SDT TL431MSDT (cid:39)V /(cid:39)V reference voltage variation I =10mA ref KA K to cathode-anode voltage (cid:39)V =10VtoV - (cid:16)1.4 (cid:16)2.7 mV/V KA ref variation ratio (cid:39)V =36Vto10V - (cid:16)1 (cid:16)2 mV/V KA I reference current I =10mA; - 2 4 (cid:80)A ref K R1=10k(cid:58);R2=open (cid:39)I reference current variation I =10mA; ref K R1=10k(cid:58);R2=open TL431CDBZR T =0(cid:113)Cto70(cid:113)C - 0.4 1.2 (cid:80)A amb TL431IDBZR T =(cid:16)40(cid:113)Cto85(cid:113)C - 0.8 2.5 (cid:80)A amb TL431QDBZR T =(cid:16)40(cid:113)Cto125(cid:113)C amb TL431FDT TL431MFDT TL431SDT TL431MSDT I minimum cathode current V =V - 0.4 1 mA K(min) KA ref I off-state current V =36V; V =0 - 0.1 1 (cid:80)A off KA ref Z dynamic cathode-anode I =1mAto100mA; - 0.2 0.5 (cid:58) KA K impedance V =V ; f<1kHz KA ref A-Grade(1%): TL431ACDBZR; TL431AIDBZR; TL431AQDBZR; TL431AFDT; TL431AMFDT; TL431ASDT; TL431AMSDT V reference voltage V =V ; I =10mA 2470 2495 2520 mV ref KA ref K (cid:39)V reference voltage variation V =V ; I =10mA ref KA ref K TL431ACDBZR T =0(cid:113)Cto70(cid:113)C - 6 16 mV amb TL431AIDBZR T =(cid:16)40(cid:113)Cto85(cid:113)C - 14 34 mV amb TL431AQDBZR T =(cid:16)40(cid:113)Cto125(cid:113)C amb TL431AFDT TL431AMFDT TL431ASDT TL431AMSDT (cid:39)V /(cid:39)V reference voltage variation I =10mA ref KA K to cathode-anode voltage (cid:39)V =10VtoV - (cid:16)1.4 (cid:16)2.7 mV/V KA ref variation ratio (cid:39)V =36Vto10V - (cid:16)1 (cid:16)2 mV/V KA TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 8 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator Table 10. Characteristics …continued T =25(cid:113)C unless otherwise specified. amb Symbol Parameter Conditions Min Typ Max Unit I reference current I =10mA; - 2 4 (cid:80)A ref K R1=10k(cid:58);R2=open (cid:39)I reference current variation I =10mA; ref K R1=10k(cid:58);R2=open TL431ACDBZR T =0(cid:113)Cto70(cid:113)C - 0.4 1.2 (cid:80)A amb TL431AIDBZR T =(cid:16)40(cid:113)Cto85(cid:113)C - 0.8 2.5 (cid:80)A amb TL431AQDBZR T =(cid:16)40(cid:113)Cto125(cid:113)C amb TL431AFDT TL431AMFDT TL431ASDT TL431AMSDT I minimum cathode current V =V K(min) KA ref TL431ACDBZR T =0(cid:113)Cto70(cid:113)C - 0.4 0.6 mA amb TL431AIDBZR T =(cid:16)40(cid:113)Cto85(cid:113)C amb TL431AQDBZR T =(cid:16)40(cid:113)Cto125(cid:113)C amb TL431AFDT TL431AMFDT TL431ASDT TL431AMSDT I off-state current V =36V; V =0 - 0.1 0.5 (cid:80)A off KA ref Z dynamic cathode-anode I =1mAto100mA; - 0.2 0.5 (cid:58) KA K impedance V =V ; f<1kHz KA ref B-Grade(0.5%): TL431BCDBZR; TL431BIDBZR; TL431BQDBZR; TL431BFDT; TL431BMFDT; TL431BSDT; TL431BMSDT V reference voltage V =V ; I =10mA 2483 2495 2507 mV ref KA ref K (cid:39)V reference voltage variation V =V ; I =10mA ref KA ref K TL431BCDBZR T =0(cid:113)Cto70(cid:113)C - 6 16 mV amb TL431BIDBZR T =(cid:16)40(cid:113)Cto85(cid:113)C - 14 34 mV amb TL431BQDBZR T =(cid:16)40(cid:113)Cto125(cid:113)C amb TL431BFDT TL431BMFDT TL431BSDT TL431BMSDT (cid:39)V /(cid:39)V reference voltage variation I =10mA ref KA K to cathode-anode voltage (cid:39)V =10VtoV - (cid:16)1.4 (cid:16)2.7 mV/V KA ref variation ratio (cid:39)V =36Vto10V - (cid:16)1 (cid:16)2 mV/V KA I reference current I =10mA; - 2 4 (cid:80)A ref K R1=10k(cid:58);R2=open TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 9 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator Table 10. Characteristics …continued T =25(cid:113)C unless otherwise specified. amb Symbol Parameter Conditions Min Typ Max Unit (cid:39)I reference current variation I =10mA; ref K R1=10k(cid:58);R2=open TL431BCDBZR T =0(cid:113)Cto70(cid:113)C - 0.4 1.2 (cid:80)A amb TL431BIDBZR T =(cid:16)40(cid:113)Cto85(cid:113)C - 0.8 2.5 (cid:80)A amb TL431BQDBZR T =(cid:16)40(cid:113)Cto125(cid:113)C amb TL431BFDT TL431BMFDT TL431BSDT TL431BMSDT I minimum cathode current V =V K(min) KA ref TL431BCDBZR T =0(cid:113)Cto70(cid:113)C - 0.4 0.6 mA amb TL431BIDBZR T =(cid:16)40(cid:113)Cto85(cid:113)C amb TL431BQDBZR T =(cid:16)40(cid:113)Cto125(cid:113)C amb TL431BFDT TL431BMFDT TL431BSDT TL431BMSDT I off-state current V =36V; V =0 - 0.1 0.5 (cid:80)A off KA ref Z dynamic cathode-anode I =1mAto100mA; - 0.2 0.5 (cid:58) KA K impedance V =V ; f<1kHz KA ref TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 10 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator 006aab571 006aab572 2.60 150 Vref IK (V) (mA) 2.56 100 2.52 50 2.48 0 2.44 −50 2.40 −100 −75 −25 25 75 125 −2 −1 0 1 2 3 Tamb (°C) VKA (V) IK=10mA; VKA=Vref VKA=Vref; Tamb=25(cid:113)C Fig 3. Reference voltage as a function of ambient Fig 4. Cathode current as a function of temperature; typical values cathode-anode voltage; typical values INPUT VKA IK Vref GND 006aab573 IK=10mA; VKA=Vref Fig 5. Test circuit to Figure3 and Figure4 TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 11 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator 006aab574 006aab575 5.0 0 Iref (μA) ΔVref 4.0 (mV) −20 3.0 2.0 −40 1.0 0.0 −60 −75 −25 25 75 125 0 10 20 30 40 Tamb (°C) VKA (V) IK=10mA; R1=10k(cid:58); R2=open IK=10mA; Tamb=25(cid:113)C Fig 6. Reference current as a function of ambient Fig 7. Reference voltage variation as a function of temperature; typical values cathode-anode voltage; typical values INPUT VKA IK R1 Iref R2 Vref GND 006aab576 V = V (cid:117)(cid:167)1+R-----1--(cid:183)+I (cid:117)R1 KA ref (cid:169) R2(cid:185) ref Fig 8. Test circuit to Figure6 and Figure7 TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 12 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator 006aab577 250 Ioff (nA) 200 150 100 50 0 −75 −25 25 75 125 Tamb (°C) VKA=36V; Vref=0V Fig 9. Off-state current as a function of ambient temperature; typical values INPUT VKA Ioff GND 006aab578 VKA=36V; Vref=0V Fig 10. Off-state current as a function of ambient temperature; test circuit TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 13 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator 006aab579 006aac478 6 6 Vin; Vout (1) Vin; Vout (1) (V) (V) 4 4 (2) (2) 2 2 0 0 −1 1 3 5 7 −1 1 3 5 7 t (μs) t (μs) Tamb=25(cid:113)C Tamb=25(cid:113)C (1) Input (1) Input (2) Output (2) Output Fig 11. All types except TL431XFDT and TL431XSDT: Fig 12. TL431XFDT: Inputvoltageandoutput voltage as a function Inputvoltageandoutputvoltageas a function of time; typical values of time; typical values 006aab580 6 Vin; Vout (1) (V) 4 220Ω VKA (2) PULSE 2 50Ω GENERATOR f = 100 kHz 0 −1 1 3 5 7 GND t (μs) 006aab581 Tamb=25(cid:113)C Tamb=25(cid:113)C (1) Input (2) Output Fig 13. TL431XSDT: Fig 14. Test circuit to Figure11,Figure12 and Inputvoltageandoutputvoltageas a function Figure13 of time; typical values TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 14 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator 006aab583 006aac479 60 60 Av Av (dB) (dB) 40 40 20 20 0 0 1 10 102 103 104 1 10 102 103 104 f (kHz) f (kHz) IK=10mA; Tamb=25(cid:113)C IK=10mA; Tamb=25(cid:113)C Fig 15. All types except TL431XFDT and TL431XSDT: Fig 16. TL431XFDT: Voltageamplificationasafunctionof Voltageamplificationasafunctionof frequency; typical values frequency; typical values 006aab582 60 Av (dB) 40 VKA 15 kΩ IK 232 Ω 9 μF 20 8.25 kΩ 0 GND 1 10 102 103 104 f (kHz) aaa-017869 IK=10mA; Tamb=25(cid:113)C IK=10mA; Tamb=25(cid:113)C Fig 17. TL431XSDT: Fig 18. Test circuit to Figure15,Figure16 and Voltageamplificationasafunctionof Figure17 frequency; typical values TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 15 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator 102 006aab585 102 006aac480 ZKA ZKA (Ω) (Ω) 10 10 1 1 10−1 10−1 1 10 102 103 104 1 10 102 103 104 f (kHz) f (kHz) IK=10mA; Tamb=25(cid:113)C IK=10mA; Tamb=25(cid:113)C Fig 19. All types except TL431XFDT and TL431XSDT: Fig 20. TL431XFDT: Dynamiccathode-anodeimpedanceasa Dynamiccathode-anodeimpedanceasa functionof frequency; typical values functionof frequency; typical values 102 006aab586 ZKA (Ω) 10 VKA 1 kΩ IK 1 50Ω 10−1 1 10 102 103 104 f (kHz) GND 006aab587 IK=10mA; Tamb=25(cid:113)C IK=10mA; Tamb=25(cid:113)C Fig 21. TL431XSDT: Fig 22. Test circuit to Figure19,Figure20 and Dynamiccathode-anodeimpedanceasa Figure21 functionof frequency; typical values TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 16 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator 006aab588 100 IK (mA) 80 (1) (1) 60 Stable Oscillation Stable 40 20 0 1 10 102 103 104 CL (nF) Tamb=25(cid:113)C (1) VKA=Vref VKA=5V: no oscillation VKA=10V: no oscillation VKA=15V: no oscillation Fig 23. All types except TL431XFDT and TL431XSDT: Cathode current as a function of load capacitance; typical values 150Ω IK R1 = 10 kΩ IK 150Ω CL VBATT CL VBATT R2 GND GND 006aab589 006aab590 VKA=Vref VKA>5V: stable operation Tamb=25(cid:113)C Tamb=25(cid:113)C Fig 24. Test circuit (1) to Figure23 Fig 25. Test circuit (2) to Figure23 TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 17 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator 006aac481 100 IK (mA) 80 (1) (1) 60 Stable Oscillation Stable 40 20 0 10−1 1 10 102 103 104 CL (nF) Tamb=25(cid:113)C (1) VKA=Vref VKA=5V: no oscillation VKA=10V: no oscillation VKA=15V: no oscillation Fig 26. TL431XFDT: Cathode current as a function of load capacitance; typical values 150Ω IK R1 = 10 kΩ IK 150Ω CL VBATT CL VBATT R2 GND GND 006aab589 006aab590 VKA=Vref VKA>5V: stable operation Tamb=25(cid:113)C Tamb=25(cid:113)C Fig 27. Test circuit (1) to Figure26 Fig 28. Test circuit (2) to Figure26 TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 18 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator 006aab591 100 IK (mA) 80 (1) (1) (2) (2) 60 Stable Oscillation Stable 40 20 0 10−1 1 10 102 103 104 CL (nF) Tamb=25(cid:113)C (1) VKA=Vref (2) VKA=5V VKA=10V: no oscillation VKA=15V: no oscillation Fig 29. TL431XSDT: Cathode current as a function of load capacitance; typical values 150Ω IK R1 = 10 kΩ IK 150Ω CL VBATT CL VBATT R2 GND GND 006aab589 006aab590 VKA=Vref VKA=5V Tamb=25(cid:113)C VKA>10V: stable operation Tamb=25(cid:113)C Fig 30. Test circuit (1) to Figure29 Fig 31. Test circuit (2) to Figure29 TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 19 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator 10. Application information V+ VOUT R1 R2 006aab592 V = (cid:167)1+R-----1--(cid:183)(cid:117)V OUT (cid:169) R2(cid:185) ref Fig 32. Shunt regulator V+ VOUT R1 R2 006aab593 V = (cid:167)1+R-----1--(cid:183)(cid:117)V OUT (cid:169) R2(cid:185) ref V = V +V OUT(cid:11)min(cid:12) ref be Fig 33. Series pass regulator V+ VOUT VIN 006aab594 V = V th ref V (cid:31)V (cid:159)V (cid:33)0 IN ref OUT V (cid:33)V (cid:159)V (cid:35)2V IN ref OUT Fig 34. Single-supply comparator with temperature-compensated threshold TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 20 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator RCL V+ IOUT 006aab595 V I = ----r---e--f OUT R CL Fig 35. Constant current source V+ VOUT R1 R2 006aab596 V = (cid:167)1+R-----1--(cid:183)(cid:117)V OUT (cid:169) R2(cid:185) ref Fig 36. High-current shunt regulator V+ ISINK RS 006aab597 V I = ----r---e--f SINK R S Fig 37. Constant current sink TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 21 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator REGULATOR LINE VOUT GND R3 R1 REF R2 GND 006aac482 Fig 38. TL431 in control loop of SMPS 11. Test information 11.1 Quality information This product has been qualified in accordance with the Automotive Electronics Council (AEC) standard Q100 - Failure mechanism based stress test qualification for integrated circuits, and is suitable for use in automotive applications. 12. Package outline 3.0 1.1 2.8 0.9 3 0.45 0.15 2.5 1.4 2.1 1.2 1 2 0.48 0.15 0.38 0.09 1.9 Dimensions in mm 04-11-04 Fig 39. Package outline SOT23(TO-236AB) TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 22 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator 13. Soldering 3.3 2.9 1.9 solder lands solder resist 3 1.7 2 solder paste 0.7 0.6 occupied area (3×) (3×) Dimensions in mm 0.5 (3×) 0.6 (3×) 1 sot023_fr Fig 40. Reflow soldering footprint SOT23(TO-236AB) 2.2 1.2 (2×) 1.4 (2×) solder lands 4.6 2.6 solder resist occupied area Dimensions in mm 1.4 preferred transport direction during soldering 2.8 4.5 sot023_fw Fig 41. Wave soldering footprint SOT23(TO-236AB) TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 23 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator 14. Revision history Table 11. Revision history Document ID Release date Data sheet status Change notice Supersedes TL431_FAMv.5 20150901 Product data sheet - TL431_FAMv.4 Modifications: • Figure18: Capacitor value corrected TL431_FAMv.4 20110630 Product data sheet - TL431_FAMv.3 TL431_FAM v.3 20101105 Product data sheet - TL431_FAM v.2 TL431_FAMv.2 20100120 Product data sheet - TL431_FAMv.1 TL431_FAMv.1 20090806 Product data sheet - - TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 24 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator 15. Legal information 15.1 Data sheet status Document status[1][2] Product status[3] Definition Objective [short] data sheet Development This document contains data from the objective specification for product development. Preliminary [short] data sheet Qualification This document contains data from the preliminary specification. Product [short] data sheet Production This document contains the product specification. [1] Please consult the most recently issued document before initiating or completing a design. [2] The term ‘short data sheet’ is explained in section “Definitions”. [3] The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status information is available on the Internet at URLhttp://www.nxp.com. 15.2 Definitions Suitability for use in automotive applications — This NXP Semiconductors product has been qualified for use in automotive applications. Unless otherwise agreed in writing, the product is not designed, Draft — The document is a draft version only. The content is still under authorized or warranted to be suitable for use in life support, life-critical or internal review and subject to formal approval, which may result in safety-critical systems or equipment, nor in applications where failure or modifications or additions. NXP Semiconductors does not give any malfunction of an NXP Semiconductors product can reasonably be expected representations or warranties as to the accuracy or completeness of to result in personal injury, death or severe property or environmental information included herein and shall have no liability for the consequences of damage. NXP Semiconductors and its suppliers accept no liability for use of such information. inclusion and/or use of NXP Semiconductors products in such equipment or Short data sheet — A short data sheet is an extract from a full data sheet applications and therefore such inclusion and/or use is at the customer's own with the same product type number(s) and title. A short data sheet is intended risk. for quick reference only and should not be relied upon to contain detailed and Applications — Applications that are described herein for any of these full information. For detailed and full information see the relevant full data products are for illustrative purposes only. NXP Semiconductors makes no sheet, which is available on request via the local NXP Semiconductors sales representation or warranty that such applications will be suitable for the office. In case of any inconsistency or conflict with the short data sheet, the specified use without further testing or modification. full data sheet shall prevail. Customers are responsible for the design and operation of their applications Product specification — The information and data provided in a Product and products using NXP Semiconductors products, and NXP Semiconductors data sheet shall define the specification of the product as agreed between accepts no liability for any assistance with applications or customer product NXP Semiconductors and its customer, unless NXP Semiconductors and design. It is customer’s sole responsibility to determine whether the NXP customer have explicitly agreed otherwise in writing. In no event however, Semiconductors product is suitable and fit for the customer’s applications and shall an agreement be valid in which the NXP Semiconductors product is products planned, as well as for the planned application and use of deemed to offer functions and qualities beyond those described in the customer’s third party customer(s). Customers should provide appropriate Product data sheet. design and operating safeguards to minimize the risks associated with their applications and products. 15.3 Disclaimers NXP Semiconductors does not accept any liability related to any default, damage, costs or problem which is based on any weakness or default in the customer’s applications or products, or the application or use by customer’s Limited warranty and liability — Information in this document is believed to third party customer(s). Customer is responsible for doing all necessary be accurate and reliable. However, NXP Semiconductors does not give any testing for the customer’s applications and products using NXP representations or warranties, expressed or implied, as to the accuracy or Semiconductors products in order to avoid a default of the applications and completeness of such information and shall have no liability for the the products or of the application or use by customer’s third party consequences of use of such information. NXP Semiconductors takes no customer(s). NXP does not accept any liability in this respect. responsibility for the content in this document if provided by an information source outside of NXP Semiconductors. Limiting values — Stress above one or more limiting values (as defined in the Absolute Maximum Ratings System of IEC60134) will cause permanent In no event shall NXP Semiconductors be liable for any indirect, incidental, damage to the device. Limiting values are stress ratings only and (proper) punitive, special or consequential damages (including - without limitation - lost operation of the device at these or any other conditions above those given in profits, lost savings, business interruption, costs related to the removal or the Recommended operating conditions section (if present) or the replacement of any products or rework charges) whether or not such Characteristics sections of this document is not warranted. Constant or damages are based on tort (including negligence), warranty, breach of repeated exposure to limiting values will permanently and irreversibly affect contract or any other legal theory. the quality and reliability of the device. Notwithstanding any damages that customer might incur for any reason whatsoever, NXP Semiconductors’ aggregate and cumulative liability towards Terms and conditions of commercial sale — NXP Semiconductors customer for the products described herein shall be limited in accordance products are sold subject to the general terms and conditions of commercial with the Terms and conditions of commercial sale of NXP Semiconductors. sale, as published at http://www.nxp.com/profile/terms, unless otherwise agreed in a valid written individual agreement. In case an individual Right to make changes — NXP Semiconductors reserves the right to make agreement is concluded only the terms and conditions of the respective changes to information published in this document, including without agreement shall apply. NXP Semiconductors hereby expressly objects to limitation specifications and product descriptions, at any time and without applying the customer’s general terms and conditions with regard to the notice. This document supersedes and replaces all information supplied prior purchase of NXP Semiconductors products by customer. to the publication hereof. TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 25 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator No offer to sell or license — Nothing in this document may be interpreted or Translations — A non-English (translated) version of a document is for construed as an offer to sell products that is open for acceptance or the grant, reference only. The English version shall prevail in case of any discrepancy conveyance or implication of any license under any copyrights, patents or between the translated and English versions. other industrial or intellectual property rights. Export control — This document as well as the item(s) described herein 15.4 Trademarks may be subject to export control regulations. Export might require a prior authorization from competent authorities. Notice: All referenced brands, product names, service names and trademarks Quick reference data — The Quick reference data is an extract of the are the property of their respective owners. product data given in the Limiting values and Characteristics sections of this document, and as such is not complete, exhaustive or legally binding. 16. Contact information For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 5 — 01 September 2015 26 of 27

TL431 family NXP Semiconductors Adjustable precision shunt regulator 17. Contents 1 Product profile. . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 General description . . . . . . . . . . . . . . . . . . . . . 1 1.2 Features and benefits. . . . . . . . . . . . . . . . . . . . 2 1.3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.4 Quick reference data . . . . . . . . . . . . . . . . . . . . 2 2 Pinning information. . . . . . . . . . . . . . . . . . . . . . 3 3 Ordering information. . . . . . . . . . . . . . . . . . . . . 4 4 Marking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5 Functional diagram . . . . . . . . . . . . . . . . . . . . . . 5 6 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 6 7 Recommended operating conditions. . . . . . . . 7 8 Thermal characteristics . . . . . . . . . . . . . . . . . . 7 9 Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . 8 10 Application information. . . . . . . . . . . . . . . . . . 20 11 Test information. . . . . . . . . . . . . . . . . . . . . . . . 22 11.1 Quality information . . . . . . . . . . . . . . . . . . . . . 22 12 Package outline. . . . . . . . . . . . . . . . . . . . . . . . 22 13 Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 14 Revision history. . . . . . . . . . . . . . . . . . . . . . . . 24 15 Legal information. . . . . . . . . . . . . . . . . . . . . . . 25 15.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 25 15.2 Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 15.3 Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 25 15.4 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 26 16 Contact information. . . . . . . . . . . . . . . . . . . . . 26 17 Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. © NXP Semiconductors N.V. 2015. All rights reserved. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com Date of release: 01 September 2015 Document identifier: TL431 family