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Contents

README

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AP139-30WG-7

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

AP139-30WG-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 VIN power_in Power supply input accepting 2.7V to 5.5V (absolute maximum +6V).
2 GND power_in Ground pin; a quiet ground termination is desirable.
3 EN input Enable pin: output ON at 1.7V or above, OFF at 0.8V or below, with enable pin current below 0.1µA.
4 BYP passive Bypass signal pin; a 10nF capacitor between BYP and ground is used for low-noise applications.
5 VOUT power_out Regulated output delivering up to 300mA, stable with a low-ESR output capacitor of 1.0µF or greater.

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
Input Voltage (max) VIN 5.5 V Note 3 3
Quiescent Current IQ 45 60 μA IO = 0mA 3
Standby Current ISTB 2 3 μA VIN = 5.0V, VOUT = 0V, VEN < VEL 3
Output Voltage Accuracy VOUT -2 2 % IO = 1mA, VIN = 5V 3
VOUT Temperature Coefficient 50 ppm/°C 3
Dropout Voltage VDROPOUT 0.45 V IO = 1mA to 300mA, VOUT = VO(NOM) - 1.5%, VO ≥ 2.8V 3
Output Current IOUT 300 mA 3
Current Limit ILIMIT 300 450 mA VOUT > 1.05V 3
Short Circuit Current Ishort 150 300 mA Vcc = 5V, Vout < 1.05V 3
Line Regulation ΔVLINE 0.1 0.3 % IOUT = 1mA, VIN = (VOUT +1V) to 5.5V 3
Load Regulation ΔVLOAD 0.3 1 % IO = 1mA to 300mA, VIN = 5V 3
EN Input Threshold Output ON VEH 1.7 V Output ON 3
EN Input Threshold Output OFF VEL 0.8 V Output OFF 3
Enable Pin Current IEN 0.1 μA printed <0.1 3
Input Voltage VIN 2.7 5.5 V 3
Output Current IOUT 0 300 mA 3
Operating Ambient Temperature TA -40 85 °C 3
Input Voltage VIN 6 V 2
Operating Junction Temperature Range TOP -40 125 °C 2
Maximum Junction Temperature TMJ 150 °C 2
Internal Power Dissipation PD 250 mW 2
Thermal Resistance Junction-Ambient θJA 226 °C/W SOT25 (Note 4) 3
Thermal Resistance Junction-Case θJC 34 °C/W SOT25 (Note 4) 3
PSRR 1kHz PSRR 60 dB IO = 100mA, CO = 2.2μF ceramic, f = 1KHz 3
PSRR 10kHz PSRR 50 dB IO = 100mA, CO = 2.2μF ceramic, f = 10KHz 3
PSRR 100kHz PSRR 40 dB IO = 100mA, CO = 2.2μF ceramic, f = 100KHz 3
Over Temperature Shutdown OTS 130 °C 3
Over Temperature Hysteresis OTH 20 °C 3

CAD (KiCad official)

  • Symbol: AP139-30WG-7
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-25 (KiCad packages3D, STEP)
  • 3D model files: ap139-30wg-7-etched.step / ap139-30wg-7-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ap139-30wg-7.step / ap139-30wg-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 3012982ef2cad8b7, retrieved 2026-10-23, 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