component
AP2125K-2.5TRG1
Public Made by Adomby adom
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.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownAP2125K-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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ap2125k-2-5trg1.step/ap2125k-2-5trg1.glbare 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, primaryclaude-haiku-5-5(text), consensusclaude-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).