component
AP2127K-1.2TRG1
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
markdownAP2127K-1.2TRG1
Diodes Incorporated · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5
AP2127K-1.2TRG1 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 | Power input for the regulator, specified at 2.5 V to 6 V (absolute maximum 6.5 V), with a 1 µF ceramic input capacitor recommended close to the device between VIN and GND. |
| 2 | GND | power_in | Ground pin that serves as the common return for the input and output capacitors, which should be placed as close as possible to the device with short leads. |
| 3 | Shutdown | input | Enable input with a specified high threshold of at least 1.5 V and a low threshold of at most 0.5 V, and an absolute input range of -0.3 V to VIN + 0.3 V. |
| 4 | NC/ADJ | unconnected | No connection on the fixed-voltage version; on the adjustable version this pin is the VOUT feedback input for the external resistor divider (not used on the 1.2 V fixed part). |
| 5 | VOUT | power_out | Regulated output of 1.2 V nominal (±2%) rated for up to 300 mA, requiring a low-ESR ceramic output capacitor of at least 1 µF (X7R or X5R) placed close to VOUT and GND. |
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 |
|---|---|---|---|---|---|---|---|
| Reference Voltage | VREF | 0.784 | 0.8 | 0.816 | V | VIN = VOUT +1V, 1mA ≤ IOUT ≤ 300mA | 5 |
| Maximum Output Current | IOUT(MAX) | 300 | 400 | mA | VIN - VOUT = 1V, VOUT = 0.98 x VOUT | 5 | |
| Load Regulation | ΔVOUT | 4 | 10 | mV | VIN - VOUT = 1V, 1mA ≤ IOUT ≤ 300mA | 5 | |
| Line Regulation | ΔVOUT | 0.5 | 5 | mV | VOUT + 0.5V ≤ VIN ≤ 6V, IOUT = 30mA | 5 | |
| Dropout Voltage (VOUT = 1.2V) | VDROP | 1200 | 1300 | mV | VOUT = 1.2V, IOUT = 300mA | 5 | |
| Quiescent Current | IQ | 60 | 90 | µA | VIN = VOUT +1V, IOUT = 0mA | 5 | |
| Standby Current | ISTD | 0.1 | 1 | µA | VIN = VOUT +1V, VSHUTDOWN in off mode | 5 | |
| Output Voltage Temperature Coefficient | ΔVOUT/VOUT/ΔT | -100 | 100 | ppm/°C | IOUT = 30mA, -40°C ≤ TA ≤ +85°C | 5 | |
| Shutdown High Voltage | 1.5 | V | Shutdown Input Voltage High | 5 | |||
| Shutdown Low Voltage | 0.5 | V | Shutdown Input Voltage Low | 5 | |||
| Input Voltage | VIN | 2.5 | 6 | V | 5 | ||
| Input Voltage (recommended operating) | VIN | 2.5 | 6 | V | 4 | ||
| Operating Ambient Temperature Range | TA | -40 | 85 | °C | 4 | ||
| Input Voltage (absolute maximum) | VIN | 6.5 | V | 4 | |||
| Output Current (absolute maximum) | IOUT | 450 | mA | 4 | |||
| Junction Temperature (absolute maximum) | TJ | 150 | °C | 4 | |||
| Storage Temperature Range | TSTG | -65 | 150 | °C | 4 | ||
| Lead Temperature (soldering) | TLEAD | 260 | °C | Soldering, 10 sec | 4 | ||
| ESD Human Body Model | ESD | 6000 | V | Human Body Model | 4 | ||
| ESD Machine Model | ESD | 200 | V | Machine Model | 4 | ||
| Thermal Resistance Junction to Ambient (SOT-23-5) | θJA | 250 | °C/W | Junction to ambient, SOT-23-5 | 4 | ||
| Thermal Resistance Junction to Case (SOT-23-5) | θJC | 150 | °C/W | Junction to case, SOT-23-5 | 5 |
CAD (KiCad official)
- Symbol:
AP2127K-1.2TRG1 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
ap2127k-1-2trg1-etched.step/ap2127k-1-2trg1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ap2127k-1-2trg1.step/ap2127k-1-2trg1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (24 pp, sha256
d48c96ac985d348a, retrieved 2026-10-19, 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).