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AP131-25WG-7

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Diodes Incorporated Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-25. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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AP131-25WG-7

Diodes Incorporated · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-25

AP131-25WG-7 from Diodes Incorporated, in a SOT-25. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 IN power_in Input voltage pin, operating range 2.7V to 5.5V (absolute maximum +6V), decoupled with a 1uF CIN in the typical application.
2 GND power_in Ground pin.
3 EN input Active-high enable pin: output ON at 1.5V to VIN, OFF at 0V to 0.8V, with enable pin current below 0.1uA.
4 BP passive Band-gap bypass pin where an external capacitor (0.1uF in the typical circuit) can be connected to reduce output noise.
5 OUT power_out Regulated fixed output voltage (2.5V for the -25 version) delivering up to 300mA, with a 10uF COUT in the typical application.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-25
Category Power Management (PMIC)
Pins 5

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Dropout Voltage VDROP 400 500 mV IL = 300mA 3
Current Limit ILIMIT 350 450 mA VIN = 5V, VOUT = 0V 3
Short Circuit Current Ishort 150 300 mA VOUT < 1.05V 3
Line Regulation ΔVLINE 0.1 0.3 %/V IOUT = 1mA, VIN =(VOUT +1V ) to 5.5V 3
Load Regulation ΔVLOAD 30 35 mV IL = 1~300mA, VIN = 5V 3
Output Voltage Accuracy ΔVOUT -2 2 % IL = 1mA, VIN = 5V 3
Output Voltage Temperature Coefficient 50 150 PPM/°C 3
Standby Current ISB 5 μA IL = 0mA, VIN = 5V, EN = 0V 3
Quiescent Current IQ 50 100 μA IL = 0mA, VIN = 5V, EN = 5V 3
Enable Pin Voltage Output ON VENON 1.5 V Output ON (max printed as VIN) 3
Enable Pin Voltage Output OFF VENOFF 0 0.8 V Output OFF 3
Input Voltage VIN 2.7 5.5 V 2
Output Current IOUT 0 300 mA 2
Operating Ambient Temperature TA -40 85 °C 2
Input Voltage VCC 6 V TA = +25°C 2
Operating Junction Temperature Range TOP -40 125 °C TA = +25°C 2
Storage Temperature Range TST -65 150 °C TA = +25°C 2
Power Dissipation PD 250 mW PD@ TA = 25°C SOT25 2
Ripple Rejection PSRR 60 dB F = 100Hz, CIN = 1μF, CO = 10µF, IL = 100mA 3
Enable Pin Current IEN 0.1 μA 3
Enable Delay Time TDELAY 8 µS CBP = 0.1μF, COUT = 1μF, IOUT = 30mA 3
Thermal Resistance Junction-to-Ambient ϴJA 163 °C/W SOT25 3
Thermal Resistance Junction-to-Case ϴJC 53 °C/W SOT25 3

CAD (KiCad official)

  • Symbol: AP131-25WG-7
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-25 (KiCad packages3D, STEP)
  • 3D model files: ap131-25wg-7-etched.step / ap131-25wg-7-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ap131-25wg-7.step / ap131-25wg-7.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Diodes Incorporated datasheet (7 pp, sha256 3398951f7d054688, retrieved 2026-10-26, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF