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AP2125K-2.5TRG1

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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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AP2125K-2.5TRG1

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

AP2125K-2.5TRG1 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 pin; the datasheet recommends VIN from VOUT+0.5V to 6V, with an absolute maximum of 6.5V.
2 GND power_in Ground reference pin for the regulator.
3 CE input Active-high enable input: logic high enables the regulator and logic low puts it in shutdown, with a CE high level of at least 1.5V and a CE low level of at most 0.4V.
4 NC unconnected No connection.
5 VOUT power_out Regulated output voltage pin, delivering at least 300mA maximum output current for the fixed 2.5V version.

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
Output Voltage VOUT 2.45 2.5 2.55 V VIN = 3.5V, 1mA ≤ IOUT ≤ 30mA 5
Maximum Output Current IOUT(MAX) 300 360 mA VIN-VOUT = 1V, VOUT = 2.45V 5
Input Voltage VIN 6 V 5
Load Regulation VRLOAD 10 15 mV VIN = 3.5V, 1mA ≤ IOUT ≤ 300mA 5
Line Regulation VRLINE 1 15 mV 3.5V ≤ VIN ≤ 6V, IOUT = 30mA 5
Dropout Voltage VDROP 6.5 10 mV IOUT = 10mA 5
Dropout Voltage VDROP 65 100 mV IOUT = 100mA 5
Dropout Voltage VDROP 200 300 mV IOUT = 300mA 5
Quiescent Current IQ 60 90 µA VIN = 3.5V, IOUT = 0mA 5
Standby Current ISTD 0.01 1 µA VIN = 3.5V, VCE in OFF mode 5
Output Voltage Temperature Coefficient (ΔVOUT/VOUT)/ΔT -100 100 ppm/ºC IOUT = 30mA 5
CE High Voltage VCE 1.5 V CE input voltage "High" 5
CE Low Voltage VCE 0.4 V CE input voltage "Low" 5
Input Voltage VIN 6.5 V 3
Enable Input Voltage VCE -0.3 V Upper limit printed as VIN +0.3 V 3
Output Current IOUT 450 mA 3
Junction Temperature TJ 150 ºC 3
Storage Temperature Range TSTG -65 150 ºC 3
Lead Temperature TLEAD 260 ºC Soldering, 10sec 3
Thermal Resistance Junction-to-Ambient θJA 200 ºC/W SOT-23-5 3
ESD Human Body Model ESD 6000 V Human Body Model 3
ESD Machine Model ESD 400 V Machine Model 3
Input Voltage (recommended) VIN 6 V Minimum printed as VOUT+0.5V 3
Operating Ambient Temperature Range TA -40 85 ºC 3

CAD (KiCad official)

  • Symbol: AP2125K-2.5TRG1
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: ap2125k-2-5trg1-etched.step / ap2125k-2-5trg1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ap2125k-2-5trg1.step / ap2125k-2-5trg1.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (25 pp, sha256 73dd4f47f543db12, retrieved 2026-10-20, 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