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AP2139AK-1.5TRG1

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Diodes Incorporated Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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AP2139AK-1.5TRG1

Diodes Incorporated · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5

AP2139AK-1.5TRG1 from Diodes Incorporated, in a SOT-23-5. 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 Input voltage, recommended range 2.5 V to 6.0 V with an absolute maximum rating of 6.6 V.
2 GND power_in Ground reference pin.
3 CE input Active high enable input: logic high enables the regulator and logic low puts it in shutdown; VIH min 1.2 V, VIL max 0.3 V, and the enable voltage absolute range is -0.3 V to VIN+0.3 V.
4 NC unconnected No connection.
5 VOUT power_out Regulated output voltage; for the AP2139AK-1.5 version it is 1.470 V min, 1.500 V typ, 1.530 V max.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-23-5
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 VIN 6 V 7
Output Voltage VOUT 1.47 1.5 1.53 V 7
Quiescent Current IQ 1 1.5 µA IOUT = 0 7
Standby Current (AP2139) ISTD 0.1 1 µA VCE = 0 7
Output Current IOUT 250 mA 7
Load Regulation VRLOAD 25 40 mV 1mA ≤ IOUT ≤ 100mA 7
Line Regulation VRLINE 6 18 mV 2.5V ≤ VIN ≤ 6V 7
Dropout Voltage VDROP 100 300 mV IOUT = 10mA 7
Dropout Voltage VDROP 200 400 mV IOUT = 30mA 7
Dropout Voltage VDROP 600 900 mV IOUT = 100mA 7
Dropout Voltage VDROP 1000 1300 mV IOUT = 250mA 7
Output Voltage Temperature Coefficient ΔVOUT/ΔT -150 150 µV/°C 7
Output Voltage Temperature Coefficient (ratio) (ΔVOUT/VOUT)/ΔT -100 100 ppm/°C 7
CE Input Logic-High Voltage (AP2139) VIH 1.2 V 7
CE Input Logic-Low Voltage (AP2139) VIL 0.3 V 7
Input Voltage (recommended operating) VIN 2.5 6 V 4
Operating Ambient Temperature Range TA -40 85 °C 4
Input Voltage (absolute maximum) VIN 6.6 V 4
Enable Input Voltage (AP2139) VCE -0.3 V Upper limit printed as VIN+0.3 V (not a fixed number) 4
Lead Temperature TLEAD 260 °C 4
Junction Temperature TJ 150 °C 4
Storage Temperature Range TSTG -65 150 °C 4
ESD (Machine Model) ESD 350 V Machine Model 4
ESD (Human Body Model) ESD 2000 V Human Body Model 4
Thermal Resistance Junction-to-Ambient (SOT-23-5) θJA 250 °C/W SOT-23-5, Note 6; listed in absolute maximum ratings table 4
Thermal Resistance Junction-to-Case (SOT-23-5) θJC 81.9 °C/W SOT-23-5 7

CAD (KiCad official)

  • Symbol: AP2139AK-1.5TRG1
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: ap2139ak-1-5trg1-etched.step / ap2139ak-1-5trg1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ap2139ak-1-5trg1.step / ap2139ak-1-5trg1.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (29 pp, sha256 027e80492a5bc199, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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