AP2318 600mA ULDO REGULATOR WITH ENABLE Description Pin Assignments The AP2318 is a series of ultra low dropout regulators optimized for low voltage applications where transient response and minimum input (Top View) voltage are critical. The AP2318 provides current limit and thermal shutdown. Its circuit includes a trimmed bandgap reference to assure output voltage accuracy to be within ±1.5%. On-chip thermal shutdown provides protection against any combination of overload and ambient temperatures that would create excessive junction temperatures. The AP2318 has both fixed and adjustable versions. The 1.3V fixed versions integrate the corresponding resistor divider. The adjustable version can set the output voltage through two external resistors. DFN-3x3-8 The AP2318 is available in the standard DFN-3x3-8 and SOIC-8 (Top View) packages. Features NC 1 8 GND  Wide Operating Voltage Ranges: 2.5V to 12V EN 2 7 ADJ/NC  Output Voltage Accuracy: ±1.5% VIN 3 6 VOUT  On-chip Thermal Shutdown  ESD VIN 4 5 NC  Human Body Model 3kV  Machine Model 600V SOIC-8  Operating Junction Temperature: -40°C to +125°C Applications  Notebook  USB Device  Add-on Card  DVD Player  PC Motherboard AP2318 1 of 13 July 2018 Document number: DS41226 Rev. 2 - 2 www.diodes.com © Diodes Incorporated

AP2318 Typical Applications Circuit V V IN OUT VIN VOUT AP2318-ADJ R1 ADJ/ EN NC GND + COUT CIN + 2.2F 1F R2 ADJ Version, V = 0.8*(R1+R2)/R2 OUT VIN=3.3V VOUT=1.3V VIN VOUT AP2318-1.3 ADJ/ EN NC GND + COUT CIN + 2.2F 1F Fixed 1.3V Version, V = 1.3V OUT Pin Description Pin Number Pin Name Function DFN-3x3-8 SOIC-8 1, 2 3, 4 VIN Input Voltage 3, 4 6 VOUT Output Voltage 5 7 ADJ/NC Adjust Voltage/No Connection 6 8 GND Ground 7 1, 5 NC No Connection 8 2 EN On/Off Control AP2318 2 of 13 July 2018 Document number: DS41226 Rev. 2 - 2 www.diodes.com © Diodes Incorporated

AP2318 Functional Block Diagram V 1, 2 (3, 4) 3, 4 (6) IN V OUT 8 (2) EN RC Enable OVP Compensation 5 (7) ADJ/NC Bandgap Error A1 B Reference V FB Amplifier Thermal Current A2 Shutdown Limit 6 (8) GND Connect A1 and A2, disconnect B: Fixed Voltage Version Connect B, disconnect A1 and A2:Adjustable Voltage Version A(B) A: DFN-3x3-8 B: SOIC-8 Absolute Maximum Ratings (Note 1) Symbol Parameter Rating Unit VIN Input Voltage 15 V TJ Operating Junction Temperature +150 °C TSTG Storage Temperature Range -65 to +150 °C TLEAD Lead Temperature (Soldering, 10sec) +260 °C SOIC-8 135 θJA Thermal Resistance (Note 2) °C/W DFN-3x3-8 120 ESD ESD (Human Body Model) 3000 V ESD ESD (Machine Model) 600 V Notes: 1. Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability. 2. Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the device outside of its operating ratings. The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(max), the junction- to-ambient thermal resistance, θJA, and the ambient temperature, TA. The maximum allowable power dissipation at any ambient temperature is calculated using: PD(max) = (TJ(max)-TA)/θJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. AP2318 3 of 13 July 2018 Document number: DS41226 Rev. 2 - 2 www.diodes.com © Diodes Incorporated

AP2318 Recommended Operating Conditions Symbol Parameter Min Max Unit VIN Input Voltage 2.5 12 V VEN Enable Voltage — 12 V TJ Operating Junction Temperature Range -40 +125 °C Electrical Characteristics (Operating Conditions: 2.5V ≤ VIN ≤ 12V, CIN = 1µF, COUT = 2.2µF, TJ = +25°C, unless otherwise specified. (P ≤ Maximum Power Dissipation). Limits appearing in Boldface type apply over the entire junction temperature range for operation of - 40°C to +125°C.) Symbol Parameter Conditions Min Typ Max Unit AP2318-ADJ IOUT = 10mA, VIN-VOUT = 2V, TJ = +25°C 0.788 0.800 0.812 VREF Reference Voltage V 10mA ≤ IOUT ≤ 600mA, VOUT+2V ≤ VIN ≤ 12V 0.784 0.800 0.816 IOUT = 10mA, VIN = 2.5V, TJ = +25°C -1.5% 1.5% VOUT Output Voltage — V 10mA ≤ IOUT ≤ 600mA, 2.5V ≤ VIN ≤ 12V -2% 2% IOUT(max) Maximum Output Current VIN-VOUT = 2V 0.85 1.2 — A AP2318-ADJ — 1 6 mV VRLINE Line Regulation IOUT = 10mA, VOUT+2V ≤ VIN ≤ 12V IOUT = 10mA, 2.5V ≤ VIN ≤ 12V — 1 6 mV AP2318-ADJ — 1 10 mV VRLOAD Load Regulation VIN = VOUT+2V, 10mA ≤ IOUT ≤ 600mA VIN = 2.5V, 10mA ≤ IOUT ≤ 600mA — 1 10 mV VDROP Dropout Voltage ∆VOUT (∆VREF) = 1%, IOUT = 600mA — 0.35 — V IADJ Adjust Pin Current — — 0.05 1 µA ILOAD(min) Minimum Load Current VOUT+2V ≤ VIN ≤ 12V (ADJ only) — 1.7 5 mA IQ Quiescent Current VIN = VOUT+2V, IOUT = 0mA — 250 — µA RMS Output Noise VNOI TA = +25°C, 10Hz ≤ f ≤ 20kHz — 0.003 — % (% of VOUT) Thermal Shutdown — — — +150 — °C Temperature Thermal Shutdown — — — +25 — °C Hysteresis Enable Logic Low — — 0.8 VEN Enable Input Voltage V Enable Logic High 2.25 — — VEN = 2.25V — 5 15 µA IEN Enable Input Current VEN = 0.8V — — 4 µA DFN-3x3-8 — 15 — Thermal Resistance θJC °C/W (Junction to Case) SOIC-8 — 24 — AP2318 4 of 13 July 2018 Document number: DS41226 Rev. 2 - 2 www.diodes.com © Diodes Incorporated

AP2318 Performance Characteristics Output Voltage vs. Output Current Output Voltage vs. Output Current (Conditions: V = 0.8V, ADJ Short to GND) (Conditions: V = 1.2V, R1 = 3kΩ, R2 = 6.2kΩ) OUT OUT 0.90 1.30 0.88 AP2318-ADJ 1.28 AP2318-ADJ V =0.8V V =1.2V 0.86 AODUJT short to GND 1.26 RO1U=T3k ge (V) 00..8824 TVCIN==225.o8CV age (V) 11..2224 RTVC2=IN=2=653.2o.2CkV olta 0.80 Volt 1.20 ut V 0.78 put 1.18 utp Out O 0.76 1.16 0.74 1.14 0.72 1.12 0.70 1.10 0 50 100 150 200 250 300 0 50 100 150 200 250 300 Output Current (mA) Output Current (mA) Output Voltage vs. Output Current Output Voltage vs. Output Current (Conditions: V = 0.8V, ADJ Short to GND) (Conditions: V = 1.2V, R1 = 3kΩ, R2 = 6.2kΩ) OUT OUT 1.0 1.5 0.9 1.4 AP2318-ADJ 1.3 V =1.2V 0.8 1.2 RO1U=T3k 1.1 R2=6.2k Output Voltage (V) 0000....4567 AVATCOPD=U2JT23 =s510ho8.Co8-rVAt DtoJ GND utput Voltage (V) 000001......567890 TC=25oC 0.3 O 0.4 V =3.2V 0.2 VIN=3.2V 0.3 VIN=2.5V 0.1 V VININ==81V2V 00..12 VIINN=12V 0.0 0.0 0 150 300 450 600 750 900 1050 1200 1350 1500 0 150 300 450 600 750 900 1050 1200 1350 1500 Output Current (mA) Output Current (mA) Output Voltage vs. Output Current Output Voltage vs. Output Current (Conditions: VOUT = 0.8V, ADJ Short to GND) (Conditions: VOUT = 1.2V, R1 = 3kΩ, R2 = 6.2kΩ) 1.1 1.5 1.4 1.0 1.3 0.9 1.2 0.8 1.1 Output Voltage (V) 0000000.......1234567 AVVAIOPDNU=2JT23 =s .10TTTh88.CCCoV8===-rVAt2-1 4Dt52o05oJ CoGoCCND Output Voltage (V) 0000000001..........1234567890 AVVRRIOP12NU===2T3363=.k.1 122TTT8.Vk2CCC-===VA2-1D4520J5oCooCC 0.0 0.0 0 150 300 450 600 750 900 1050 1200 1350 1500 0 150 300 450 600 750 900 1050 1200 1350 1500 Output Current (mA) Output Current (mA) AP2318 5 of 13 July 2018 Document number: DS41226 Rev. 2 - 2 www.diodes.com © Diodes Incorporated

AP2318 Performance Characteristics (Cont.) Output Voltage vs. Input Voltage Output Voltage vs. Input Voltage (Conditions: V = 0.8V, ADJ Short to GND) (Conditions: V = 1.2V, R1 = 3kΩ, R2 = 6.2kΩ) OUT OUT 1.0 VCC=5V 1.4 0.9 0.8 1.2 0.7 Output Voltage (V) 0000....3456 AVATCOPD=U2JT23 =s510ho8.Co8-rVAt DtoJ GND Output Voltage (V) 001...680 AVRRTCOP12=U==2T2363=5k.112o8.Ck2-VADJ 300mA 0.4 300mA 0.2 10mA 10mA 600mA 0.2 600mA 0.1 0.0 0.0 0 1 2 3 4 5 6 7 8 9 10 11 12 0 1 2 3 4 5 6 7 8 9 10 11 12 Input Voltage (V) Input Voltage (V) Output Voltage vs. Case Temperature Output Voltage vs. Case Temperature (Conditions: V = 0.8V, ADJ Short to GND) (Conditions: V = 1.2V, R1 = 3kΩ, R2 = 6.2kΩ) OUT OUT 0.90 1.30 0.88 1.28 AP2318-ADJ V =3.2V 0.86 1.26 IN V =1.2V oltage (V) 000...888024 Voltage (V) 111...222024 RRIOO12UUT===T361k.02mkA ut V 0.78 put 1.18 Outp 0.76 AVIPN=223.188V-ADJ Out 1.16 V =0.8V 0.74 AODUJT short to GND 1.14 0.72 IOUT=10mA 1.12 0.70 1.10 -40 -20 0 20 40 60 80 100 120 -40 -20 0 20 40 60 80 100 120 Case Temperature (oC) Case Temperature (oC) Supply Voltage vs. Input Voltage Supply Voltage vs. Input Voltage (Conditions: V = 0.8V, ADJ Short to GND) (Conditions: V = 1.2V, R1 = 3kΩ, R2 = 6.2kΩ) OUT OUT 250 400 225 350 200 300 A) 175 A) Current ( 112550 AVAOPDU2JT3 =s10h8.o8-rVAt DtoJ GND Current ( 220500 AVRROP12U==2T363=k.1128.k2-VADJ ply 100 No Load ply 150 No Load up T =-40oC up T =-40oC S 75 C S C T =25oC 100 T =25oC C C 50 T =125oC T =125oC C 50 C 25 0 0 0 1 2 3 4 5 6 7 8 0 1 2 3 4 5 6 7 8 Input Voltage (V) Input Voltage (V) AP2318 6 of 13 July 2018 Document number: DS41226 Rev. 2 - 2 www.diodes.com © Diodes Incorporated

AP2318 Performance Characteristics (Cont.) Supply Current vs. Case Temperature Supply Current vs. Case Temperature (Conditions: V = 0.8V, ADJ Short to GND) (Conditions: V = 1.2V, R1 = 3kΩ, R2 = 6.2kΩ) OUT OUT VCC=5V 220 340 216 336 AP2318-ADJ 212 AVP=223.188V-ADJ 332 VVIN=3=.12.V2V nt (A) 220048 VANIODoNU JTL =os0ha.od8rVt to GND nt (A) 332248 RRNO12oU== TL36ok.a2dk e e Curr 200 Curr 320 y y pl 196 pl 316 p p Su 192 Su 312 188 308 184 304 180 300 -40 -20 0 20 40 60 80 100 120 -40 -20 0 20 40 60 80 100 120 Case Temperature (oC) Case Temperature (oC) Supply Current vs. Output Current Supply Current vs. Output Current (Conditions: V = 0.8V, ADJ Short to GND) (Conditions: V = 1.2V, R1 = 3kΩ, R2 = 6.2kΩ) OUT OUT 20 20 18 18 16 16 mA) 14 AP2318-ADJ A) 14 Supply Current ( 116802 VVAIODNU=JT2 =s. 0h8TT.oV8CCr==Vt2- t45o0o GCoCND Supply Current (m 110268 AVVRRIOP12NU===2T3363=. k.112T28.VkC2-=VA2D5JoC 4 TC=125oC 4 TC=-40oC T =125oC 2 2 C 0 0 0 150 300 450 600 750 900 1050 1200 1350 1500 0 150 300 450 600 750 900 1050 1200 1350 1500 Output Current (mA) Output Current (mA) Supply Current vs. Output Current Supply Current vs. Output Current (Conditions: V = 0.8V, ADJ Short to GND) (Conditions: V = 1.2V, R1 = 3kΩ, R2 = 6.2kΩ) OUT OUT 20 20 18 18 16 16 A) 14 A) 14 Supply Current (m 116802 AVATCOPD=U2JT2 3=s510 hoVV8.Co8I-NrVA==t Dt38o.VJ 2GVND Supply Current (m 110268 AVRRTCOP12=U==2T2363=5k.11 2oV8.Ck2-VA=D3.J2V VIN=12V VIN=2.5V 4 IN 4 IN V =12V IN 2 2 0 0 0 150 300 450 600 750 900 1050 1200 1350 1500 0 150 300 450 600 750 900 1050 1200 1350 1500 Output Current (mA) Output Current (mA) AP2318 7 of 13 July 2018 Document number: DS41226 Rev. 2 - 2 www.diodes.com © Diodes Incorporated

AP2318 Performance Characteristics (Cont.) Load Transient Response Load Transient Response (Conditions: V = 2.5V, V = 1.3V, I = 1mA to 300mA, (Conditions: V = 2.5V, V = 1.8V, I = 1mA to 600mA, IN OUT OUT IN OUT OUT C = 1µF, C = 2.2µF) C = 1µF, C = 2.2µF) IN OUT IN OUT Div) Div) A/ A/ m m 0 0 0 0 1 2 (UT (UT O O I I Div) Div) V/ V/ m m 0 0 5 0 (OUT (1UT V O ∆ V ∆ Time (200µs/Div) Time (200µs/Div) Line Transient Response Line Transient Response (Conditions: V = 2.5V to 5V, V = 0.8V, I = 10mA, (Conditions: V = 2.5V to 10V, V = 0.8V, I = 10mA, IN OUT OUT IN OUT OUT C = 0µF, C = 2.2µF) C = 0µF, C = 2.2µF) IN OUT IN OUT V/Div) 5V/Div) (2OUT V(OUT V ∆ ∆ V(50mV/Div) IN V(50mV/Div) IN ∆ ∆ PSRR vs. Frequency PSRR vs. Frequency 100 100 90 90 80 80 70 70 B) 60 B) 60 R (d 50 R (d 50 R R PS 40 PS 40 AP2318-ADJ AP2318-ADJ 30 V =1.2V 30 V =0.8V OUT OUT V =3 to 4V V =3 to 4V 20 IN 20 IN CIN=1F, COUT=2.2F CIN=1F, COUT=2.2F 10 ILOAD=10mA 10 ILOAD=10mA 0 0 10 100 1k 10k 100k 10 100 1k 10k 100k Frequency (Hz) Frequency (Hz) AP2318 8 of 13 July 2018 Document number: DS41226 Rev. 2 - 2 www.diodes.com © Diodes Incorporated

AP2318 Performance Characteristics (Cont.) Power Dissipation vs. Ambient Temperature Output Voltage vs. Enable Input Voltage (Conditions: V = 1.2V, R1 = 3kΩ, R2 = 6.2kΩ) (Conditions: V = 1.2V, R1 = 3kΩ, R2 = 6.2kΩ) OUT OUT 1.2 1.4 1.1 1.2 1.0 0.9 W) 0.8 V) 1.0 Power Dissipation ( 00000.....34567 AVVRRSIOPO12NU===2ITC3363=.k.-112288.Vk2-VADJ Output Voltage ( 000...468 AVVRRTCOIP12N=U===2T23363=5.k.1132o8.CVk2-VADJ C =1F I =10mA 0.2 IN OUT C =2.2F 0.2 0.1 OUT 0.0 0.0 30 40 50 60 70 80 90 100 110 120 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 Ambient Temperature (oC) Enable Input Voltage (V) AP2318 9 of 13 July 2018 Document number: DS41226 Rev. 2 - 2 www.diodes.com © Diodes Incorporated

AP2318 Ordering Information AP2318 X - X X X Product Name Package Output Voltage Packing E1/G1 M : SOIC-8 ADJ : Adjustable Output TR : Tape & Reel E1 : RoHS Compliant DN : DFN-3x3-8 1.3 : Fixed Output 1.3V Blank : Tube G1 : RoHS Compliant and Green Part Number Marking ID Temperature Package Packing Range RoHS Compliant RoHS Compliant RoHS Compliant RoHS Compliant and Green and Green AP2318M-ADJE1 AP2318M-ADJG1 2318M-ADJE1 2318M-ADJG1 Tube AP2318M- AP2318M-ADJTRG1 2318M-ADJE1 2318M-ADJG1 Tape & Reel ADJTRE1 SOIC-8 -40 to +125°C AP2318M-1.3E1 AP2318M-1.3G1 2318M-1.3E1 2318M-1.3G1 Tube AP2318M- AP2318M-1.3TRG1 2318M-1.3E1 2318M-1.3G1 Tape & Reel 1.3TRE1 AP2318DN- AP2318DN- F9E B9E Tape & Reel ADJTRE1 ADJTRG1 DFN-3x3-8 -40 to +125°C AP2318DN- AP2318DN- F9B B9B Tape & Reel 1.3TRE1 1.3TRG1 AP2318 10 of 13 July 2018 Document number: DS41226 Rev. 2 - 2 www.diodes.com © Diodes Incorporated

AP2318 Package Outline Dimensions (All dimensions in mm(inch).) (1) Package Type: SOIC-8 AP2318 11 of 13 July 2018 Document number: DS41226 Rev. 2 - 2 www.diodes.com © Diodes Incorporated

AP2318 Package Outline Dimensions (Cont. All dimensions in mm(inch).) (2) Package Type: DFN-3x3-8 AP2318 12 of 13 July 2018 Document number: DS41226 Rev. 2 - 2 www.diodes.com © Diodes Incorporated

AP2318 IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated website, harmless against all damages. Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application. Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks. This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the final and determinative format released by Diodes Incorporated. LIFE SUPPORT Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright © 2018, Diodes Incorporated www.diodes.com AP2318 13 of 13 July 2018 Document number: DS41226 Rev. 2 - 2 www.diodes.com © Diodes Incorporated

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: D iodes Incorporated: AP2318DN-ADJTRG1 AP2318M-ADJTRG1