LD1117A Low drop fixed and adjustable positive voltage regulators Datasheet - production data • Available in ± 2% (at 25 °C) and 4% in full temperature range • High supply voltage rejection: – 80 dB typ. (at 25 °C) SOT-223 • Temperature range: 0 °C to 125 °C TO-220 Description The LD1117A is a low drop voltage regulator able to provide up to 1 A of output current, available also in adjustable versions (V = 1.25V). In REF DPAK fixed versions, the following output voltages are offered: 1.2 V, 1.8 V, and 3.3 V. The device is supplied in: SOT-223, DPAK and TO-220. Surface Features mounted packages optimize the thermal characteristics while offering a relevant space • Low dropout voltage: saving advantage. High efficiency is assured by – 1.15 V typ. @ I = 1 A, 25 °C an NPN pass transistor. Only a very common 10 OUT µF minimum capacitor is needed for stability. Chip • Very low quiescent current: trimming allows the regulator to reach a very tight – 5 mA typ. @ 25 °C output voltage tolerance, within ± 2% at 25 °C. • Output current up to 1 A • Fixed output voltage of: – 1.2 V, 1.8 V, 3.3 V • Adjustable version availability (V = 1.25 V) REF • Internal current and thermal limit • Only 10 µF for stability Table 1. Device summary Order codes Output voltage SOT-223 DPAK TO-220 LD1117AS12TR LD1117ADT12TR 1.2 V LD1117AS18TR LD1117ADT18TR 1.8 V LD1117AS33TR LD1117ADT33TR LD1117AV33 3.3 V LD1117ASTR LD1117ADT-TR Adjustable from 1.25 V July 2013 DocID7194 Rev 26 1/24 This is information on a product in full production. www.st.com

Contents LD1117A Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Schematic application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7 LD1117A adjustable: application note . . . . . . . . . . . . . . . . . . . . . . . . . . 12 8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 9 Packaging mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 2/24 DocID7194 Rev 26

LD1117A Diagram 1 Diagram Figure 1. Block diagram DocID7194 Rev 26 3/24 24

Pin configuration LD1117A 2 Pin configuration Figure 2. Pin connections (top view) INPUT 3 VIN OUTPUT 2 VOUT 1 ADJ/GND 1 2 3 ADJ/GND TO-220 ADJ/GND VOUT VIN DPAK SOT-223 Note: The TAB is connected to the V . OUT 4/24 DocID7194 Rev 26

LD1117A Maximum ratings 3 Maximum ratings Table 2. Absolute maximum ratings Symbol Parameter Value Unit V DC input voltage 15 V IN P Power dissipation 12 W D T Storage temperature range -40 to +150 °C STG T Operating junction temperature range 0 to +125 °C OP Note: Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Beyond the above suggested max. power dissipation, a short-circuit may permanently damage the device. Table 3. Thermal data Symbol Parameter SOT-223 DPAK TO-220 Unit R Thermal resistance junction-case 15 8 5 °C/W thJC R Thermal resistance junction-ambient 110 100 50 °C/W thJA DocID7194 Rev 26 5/24 24

Schematic application LD1117A 4 Schematic application Figure 3. Application circuit (for fixed output voltages) A 6/24 DocID7194 Rev 26

LD1117A Electrical characteristics 5 Electrical characteristics Refer to the test circuits, T = 0 to 125 °C, C = 10 µF, C = 10 µF, R = 120 Ω between OUT- J O I GND, unless otherwise specified. Table 4. Electrical characteristics of LD1117A#12 Symbol Parameter Test conditions Min. Typ. Max. Unit V Output voltage V = 5.3 V, I = 10 mA, T = 25 °C 1.176 1.2 1.224 V O I O J V Output voltage I = 0 to 1 A, V = 2.75 to 10 V 1.152 1.2 1.248 V O O I ΔV Line regulation V = 2.75 to 8 V, I = 0 mA 1 6 mV O I O ΔV Load regulation V = 2.75 V, I = 0 to 1 A 1 10 mV O I O ΔV Temperature stability 0.5 % O ΔV Long term stability 1000 hrs, T = 125 °C 0.3 % O J V Operating input voltage I = 100 mA 10 V I O I Quiescent current V ≤ 8 V, I = 0 mA 5 10 mA d I O I Output current V - V = 5 V, T = 25 °C 1000 1200 mA O I O J eN Output noise voltage B = 10 Hz to 10 kHz, T = 25 °C 100 µV J I = 40 mA, f = 120 Hz SVR Supply voltage rejection O 60 80 dB V - V = 3 V, V = 1 V I O ripple PP I = 100 mA 1 1.10 O V Dropout voltage I = 500 mA 1.05 1.15 V D O I = 1 A 1.15 1.30 O ΔV Thermal regulation T = 25 °C, 30 ms pulse 0.08 0.2 %/W O(pwr) a Refer to the test circuits, T = 0 to 125 °C, C = 10 µF, C = 10 µF, unless otherwise J O I specified. Table 5. Electrical characteristics of LD1117A#18 Symbol Parameter Test conditions Min. Typ. Max. Unit V Output voltage V = 3.8 V, I = 10 mA, T = 25 °C 1.764 1.8 1.836 V O I O J V Output voltage I = 0 to 1 A, V = 3.3 to 8 V 1.728 1.872 V O O I ΔV Line regulation V = 3.3 to 8 V, I = 0 mA 1 6 mV O I O ΔV Load regulation V = 3.3 V, I = 0 to 1 A 1 10 mV O I O ΔV Temperature stability 0.5 % O ΔV Long term stability 1000 hrs, T = 125 °C 0.3 % O J V Operating input voltage I = 100 mA 10 V I O I Quiescent current V ≤ 8 V, I = 0 mA 5 10 mA d I O I Output current V - V = 5 V, T = 25 °C 1000 mA O I O J DocID7194 Rev 26 7/24 24

Electrical characteristics LD1117A Table 5. Electrical characteristics of LD1117A#18 (continued) Symbol Parameter Test conditions Min. Typ. Max. Unit eN Output noise voltage B = 10 Hz to 10 kHz, T = 25 °C 100 µV J I = 40 mA, f = 120 Hz SVR Supply voltage rejection O 60 80 dB V - V = 3 V, V = 1 V I O ripple PP I = 100 mA 1 1.10 O V Dropout voltage I = 500 mA 1.05 1.15 V D O I = 1 A 1.15 1.30 O ΔV Thermal regulation T = 25 °C, 30 ms pulse 0.08 0.2 %/W O(pwr) a Refer to the test circuits, T = 0 to 125 °C, C = 10 µF, C = 10 µF, unless otherwise J O I specified. Table 6. Electrical characteristics of LD1117A#33 Symbol Parameter Test conditions Min. Typ. Max. Unit V Output voltage V = 5.3 V, I = 10 mA, T = 25 °C 3.234 3.3 3.366 V O I O J V Output voltage I = 0 to 1 A, V = 4.75 to 10 V 3.168 3.432 V O O I ΔV Line regulation V = 4.75 to 8 V, I = 0 mA 1 6 mV O I O ΔV Load regulation V = 4.75 V, I = 0 to 1 A 1 10 mV O I O ΔV Temperature stability 0.5 % O ΔV Long term stability 1000 hrs, T = 125 °C 0.3 % O J V Operating input voltage I = 100 mA 10 V I O I Quiescent current V ≤ 10 V, I = 0 mA 5 10 mA d I O I Output current V - V = 5 V, T = 25 °C 1000 1200 mA O I O J eN Output noise voltage B =10 Hz to 10 kHz, T = 25 °C 100 µV J I = 40 mA, f = 120 Hz SVR Supply voltage rejection O 60 75 dB V - V = 3 V, V = 1 V I O ripple PP I = 100 mA 1 1.10 O V Dropout voltage I = 500 mA 1.05 1.15 V D O I = 1 A 1.15 1.30 O ΔV Thermal regulation T = 25 °C, 30 ms pulse 0.08 0.2 %/W O(pwr) a Refer to the test circuits, T = 0 to 125 °C, C = 10 µF, C = 10 µF, unless otherwise J O I specified. Table 7. Electrical characteristics of LD1117A (adjustable) Symbol Parameter Test conditions Min. Typ. Max. Unit V Reference voltage V = 5.3 V, I = 10 mA, T = 25 °C 1.225 1.25 1.275 V REF I O J V Reference voltage I = 10 mA to 1 A, V = 2.75 to 10 V 1.2 1.3 V REF O I ΔV Line regulation V = 2.75 to 8 V, I = 0 mA 1 6 mV O I O 8/24 DocID7194 Rev 26

LD1117A Electrical characteristics Table 7. Electrical characteristics of LD1117A (adjustable) (continued) Symbol Parameter Test conditions Min. Typ. Max. Unit ΔV Load regulation V = 2.75 V, I = 0 to 1 A 1 10 mV O I O ΔV Temperature stability 0.5 % O ΔV Long term stability 1000 hrs, T = 125 °C 0.3 % O J V Operating input voltage I = 100 mA 10 V I O I Adjustment pin current V ≤ 10 V 60 120 µA adj in Adjustment pin current ΔI V - V = 1.4 to 10 V, I = 10 mA to 1 A 1 5 µA adj change in O O I Minimum load current V = 10 V 2 5 mA O(min) in I Output current V - V = 5 V, T = 25 °C 1000 1200 mA O I O J eN Output noise voltage B =10 Hz to 10 kHz, T = 25 °C 100 µV J I = 40 mA, f = 120 Hz SVR Supply voltage rejection O 60 80 dB V - V = 3 V, V = 1 V I O ripple PP I = 100 mA 1 1.10 O V Dropout voltage I = 500 mA 1.05 1.15 V D O I = 1 A 1.15 1.30 O ΔV Thermal regulation T = 25 °C, 30 ms pulse 0.08 0.2 %/W O(pwr) a DocID7194 Rev 26 9/24 24

Typical application LD1117A 6 Typical application Figure 4. Negative supply LD1117A VOUT = - VOUT(NOM) Figure 5. Circuit for increasing output voltage LD1117A VOUT = VOUT(NOM) + (0 - 5V) Figure 6. Voltage regulator with reference LD1117A VOUT = VOUT(NOM) + Vz Vz 10/24 DocID7194 Rev 26

LD1117A Typical application Figure 7. Post-regulated dual supply VOUT1 LD1117A VOUT2 = VOUT(NOM) 0.5 A LD1117A VOUT3 = -VOUT(NOM) 0.5 A DocID7194 Rev 26 11/24 24

LD1117A adjustable: application note LD1117A 7 LD1117A adjustable: application note The LD1117A adjustable has a thermal stabilized 1.25 ± 0.012 V reference voltage between the OUT and ADJ pins. I is 60 µA typ. (120 µA max.) and ΔI is 1 µA typ. (5 µA max.). ADJ ADJ R is normally fixed to 120 Ω. From Figure6 the following is obtained: 1 V = V + R (I + I ) = V + R (I +V /R ) = V (1 + R / R ) + R x OUT REF 2 ADJ R1 REF 2 ADJ REF 1 REF 2 1 2 I . ADJ In normal applications the R value is in the range of a few kΩ, so the R x I product can 2 2 ADJ not be considered in the V calculation; the above expression then becomes: OUT V = V (1 + R / R ). OUT REF 2 1 In order to have a better load regulation it is important to realize a good Kelvin connection of R and R resistors. In particular, the R connection must be realized very close to the OUT 1 2 1 and ADJ pins, while the R ground connection must be placed as near as possible to the 2 negative load pin. Ripple rejection can be improved by introducing a 10 µF electrolytic capacitor placed in parallel to the R resistor (see Figure8). 2 Figure 8. Adjustable output voltage application LD1117A Figure 9. Adjustable output voltage application with improved ripple rejection LD1117A 12/24 DocID7194 Rev 26

LD1117A Package mechanical data 8 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. Table 8. TO-220 SG (single gauge) mechanical data mm Dim. Min. Typ. Max. A 4.40 4.60 b 0.61 0.88 b1 1.14 1.70 c 0.48 0.70 D 15.25 15.75 E 10 10.40 e 2.40 2.70 e1 4.95 5.15 F 0.51 0.60 H1 6.20 6.60 J1 2.40 2.72 L 13 14 L1 3.50 3.93 L20 16.40 L30 28.90 ∅ P 3.75 3.85 Q 2.65 2.95 DocID7194 Rev 26 13/24 24

Package mechanical data LD1117A Figure 10. TO-220 SG (single gauge) drawing (cid:27)(cid:20)(cid:26)(cid:23)(cid:25)(cid:21)(cid:26)(cid:66)(cid:85)(cid:72)(cid:89)(cid:39) 14/24 DocID7194 Rev 26

LD1117A Package mechanical data Table 9. SOT-223 mechanical data mm Dim. Min. Typ. Max. A 1.80 A1 0.02 0.1 B 0.60 0.70 0.85 B1 2.90 3.00 3.15 c 0.24 0.26 0.35 D 6.30 6.50 6.70 e 2.30 e1 4.60 E 3.30 3.50 3.70 H 6.70 7.00 7.30 V 10° Figure 11. SOT-223 mechanical data drawing 0046067_M DocID7194 Rev 26 15/24 24

Package mechanical data LD1117A Table 10. DPAK (TO-252) mechanical data mm Dim. Min. Typ. Max. A 2.20 2.40 A1 0.90 1.10 A2 0.03 0.23 b 0.64 0.90 b4 5.20 5.40 c 0.45 0.60 c2 0.48 0.60 D 6.00 6.20 D1 5.10 E 6.40 6.60 E1 4.70 e 2.28 e1 4.40 4.60 H 9.35 10.10 L 1.00 1.50 (L1) 2.80 L2 0.80 L4 0.60 1.00 R 0.20 V2 0° 8° 16/24 DocID7194 Rev 26

LD1117A Package mechanical data Figure 12. DPAK (TO-252) drawing 0068772_K DocID7194 Rev 26 17/24 24

Package mechanical data LD1117A Figure 13. DPAK footprint (a) Footprint_REV_K a. All dimensions are in millimeters 18/24 DocID7194 Rev 26

LD1117A Packaging mechanical data 9 Packaging mechanical data Table 11. SOT-223 tape and reel mechanical data Tape Reel mm mm Dim. Dim. Min. Typ. Max. Min. Max. A0 6.75 6.85 6.95 A 180 B0 7.30 7.40 7.50 N 60 K0 1.80 1.90 2.00 W1 12.4 F 5.40 5.50 5.60 W2 18.4 E 1.65 1.75 1.85 W3 11.9 15.4 W 11.7 12 12.3 P2 1.90 2 2.10 Base quantity pcs 1000 P0 3.90 4 4.10 Bulk quantity pcs 1000 P1 7.90 8 8.10 T 0.25 0.30 0.35 Df 1.50 1.55 1.60 D1f 1.50 1.60 1.70 Figure 14. Tape for SOT-223 (dimensions are in mm) *Cumulative tolerance of 10 sprocket holes is ±0.20 mm DocID7194 Rev 26 19/24 24

Packaging mechanical data LD1117A Figure 15. Reel for SOT-223 (dimensions are in mm) 20/24 DocID7194 Rev 26

LD1117A Packaging mechanical data Table 12. DPAK tape and reel mechanical data Tape Reel mm mm Dim. Dim. Min. Max. Min. Max. A0 6.8 7 A 330 B0 10.4 10.6 B 1.5 B1 12.1 C 12.8 13.2 D 1.5 1.6 D 20.2 D1 1.5 G 16.4 18.4 E 1.65 1.85 N 50 F 7.4 7.6 T 22.4 K0 2.55 2.75 P0 3.9 4.1 Base qty. 2500 P1 7.9 8.1 Bulk qty. 2500 P2 1.9 2.1 R 40 T 0.25 0.35 W 15.7 16.3 DocID7194 Rev 26 21/24 24

Packaging mechanical data LD1117A Figure 16. Tape for DPAK 10 pitches cumulative tolerance on tape +/- 0.2 mm Top cover P0 D P2 T tape E F K0 W B1 B0 For machine ref. only A0 P1 D1 including draft and radii concentric around B0 User direction of feed R Bending radius User direction of feed AM08852v1 Figure 17. Reel for DPAK T REEL DIMENSIONS 40mm min. Access hole At sl ot location B D C N A Full radius Tape slot G measured at hub in core for tape start 25 mm min. width AM08851v2 22/24 DocID7194 Rev 26

LD1117A Revision history 10 Revision history Table 13. Document revision history Date Revision Changes 29-Sep-2004 11 Add new part number. 12-Oct-2004 12 Mistake V max. - Table 4. O 21-Apr-2005 13 Add new package - D²PAK/A. 05-Jul-2005 14 The DPAK mechanical data updated. 10-Feb-2006 15 Add new package - D²PAK/A (B type). 20-Dec-2006 16 Change value V on Table2. IN 19-Jan-2007 17 D²PAK/A mechanical data updated and add footprint data. 28-May-2007 18 Add I and ΔI values on Table7. ADJ ADJ 07-Jun-2007 19 Add I value on Table7. O(min) 15-Apr-2008 20 Modified: Table 10. 28-Jul-2009 21 Modified: Table 10. Added: Table8 on page15, Figure14 on page18, Figure15 on page20, 05-Jul-2010 22 Figure16 and Figure17 on page21. 16-Nov-2010 23 Modified: Table1 on page1, R value for TO-220 Table3 on page5. thJC Modified: V parameter output voltage ==> Reference voltage Table7 on 16-Dec-2011 24 O page8. 19-Oct-2012 25 Added: R value for DPAK and SOT-223 Table3 on page5. thJA Part numbers LD1117AXX12, LD1117AXX18, LD1117AXX33, LD1117AXX changed to LD1117A. Modified Chapter6: Typical application. Changed Vo symbol in to V in Table7: Electrical characteristics of LD1117A 24-Jul-2013 26 REF (adjustable). Updated Chapter8: Package mechanical data. Added Chapter9: Packaging mechanical data. Minor text changes. DocID7194 Rev 26 23/24 24

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