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ap2112k-1-2trg1

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Diodes Incorporated AP2112K 1 2TRG1 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-25. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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README.md ap2112k-1-2trg1: specified limits as data (metadata.characteristics, 23 rows from the datasheet) · Ray

AP2112K-1.2TRG1

Diodes Incorporated AP2112K 1 2TRG1 · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-25

AP2112K-1.2TRG1 from Diodes Incorporated AP2112K 1 2TRG1, in a SOT-25. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VIN power_in Input supply voltage. Recommended operating range 2.5V to 6.0V (absolute max 6.5V). Bypass with a 1.0µF ceramic capacitor (X5R/X7R) to GND close to the pin.
2 GND power_in Device ground reference for the internal reference, error amplifier, and pass FET return current.
3 EN input Chip enable input. Drive high (VIH ≥ 1.5V, up to 6.0V) for normal operation; drive low (VIL ≤ 0.4V) to shut down the regulator. Internal ~3MΩ pull-down to GND; when EN is low, VOUT is discharged through an internal ~60Ω resistor.
4 NC unconnected No internal connection. Leave floating or tie to GND per board practice.
5 VOUT power_out Regulated 1.2V output (±1.5% accuracy) capable of 600mA (min). Requires a 1.0µF ceramic/tantalum/aluminum electrolytic capacitor to GND for stability. Foldback short-circuit protection limits current to ~50mA into a shorted output.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated AP2112K 1 2TRG1
Package SOT-25
Category PMIC
Pins 5

Ordering variants

  • AP2112K-1.2TRG1
  • AP2112K-1.2TRG1K-1.8TRG1
  • AP2112K-1.2TRG1K-2.5TRG1
  • AP2112K-1.2TRG1K-2.6TRG1
  • AP2112K-1.2TRG1K-3.3TRG1
  • AP2112K-1.2TRG1R5-1.2TRG1
  • AP2112K-1.2TRG1R5-1.8TRG1
  • AP2112K-1.2TRG1R5-2.5TRG1
  • AP2112K-1.2TRG1R5-2.6TRG1
  • AP2112K-1.2TRG1R5-3.3TRG1
  • AP2112K-1.2TRG1R5A-1.2TRG1
  • AP2112K-1.2TRG1R5A-1.8TRG1
  • AP2112K-1.2TRG1R5A-2.5TRG1
  • AP2112K-1.2TRG1R5A-2.6TRG1
  • AP2112K-1.2TRG1R5A-3.3TRG1
  • AP2112K-1.2TRG1M-1.2TRG1
  • AP2112K-1.2TRG1M-1.8TRG1
  • AP2112K-1.2TRG1M-2.5TRG1
  • AP2112K-1.2TRG1M-2.6TRG1
  • AP2112K-1.2TRG1M-3.3TRG1

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Power Supply Voltage VCC 6.5 V 3
Operating Junction Temperature Range TJ 150 °C 3
Storage Temperature Range TSTG -65 150 °C 3
Lead Temperature (Soldering) TLEAD 260 °C Soldering, 10 seconds 3
ESD (Machine Model) 400 V 3
ESD (Human Body Model) 4000 V 3
Supply Voltage VIN 2.5 6 V 3
Ambient Operation Temperature Range TA -40 85 °C 3
Maximum Output Current IOUT(MAX) 600 mA VIN = 2.5V, VOUT = 1.182V to 1.218V 4
Load Regulation (∆VOUT/VOUT)/∆IOUT -1 0.2 1 %/A VIN = 2.5V, 1mA ≤ IOUT ≤ 600mA 4
Line Regulation (∆VOUT/VOUT)/∆VIN -0.1 0.02 0.1 %/V 2.5V ≤ VIN ≤ 6V, IOUT = 30mA 4
Dropout Voltage VDROP 1000 1300 mV IOUT = 10mA 4
Quiescent Current IQ 55 80 µA VIN = 2.5V, IOUT = 0mA 4
Standby Current ISTD 0.01 1 µA VIN = 2.5V, VEN in OFF mode 4
Output Voltage Temperature Coefficient (printed ±100 in Typ column) (∆VOUT/VOUT)/∆T -100 100 ppm/°C IOUT = 30mA, TA = -40°C to +85°C 4
VEN High Voltage VIH 1.5 6 V Enable logic high, regulator on 4
VEN Low Voltage VIL 0 0.4 V Enable logic low, regulator off 4
EN Pull Down Resistor RPD 3 MΩ 4
Thermal Shutdown Temperature TOTSD 160 °C 4
Thermal Shutdown Hysteresis THYOTSD 25 °C 4
Thermal Resistance (Junction to Ambient), SOT25 θJA 184 °C/W No heatsink 3
Output Voltage VOUT 1.2 V VIN = 2.5V, 1mA ≤ IOUT ≤ 30mA 4
Thermal Resistance (Junction to Case), SOT25 θJC 96 °C/W Junction to case, SOT25 4

CAD (KiCad official)

  • Symbol: AP2112K-1.2TRG1
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-25 (KiCad packages3D, STEP)
  • 3D model files: ap2112k-1-2trg1-etched.step / ap2112k-1-2trg1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ap2112k-1-2trg1.step / ap2112k-1-2trg1.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated AP2112K 1 2TRG1 datasheet (None pp, sha256 ef8d376f2ec356e2, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF