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1117-ADJ

Public Made by Adom

by adom

IDCHIP Linear Voltage Regulators (LDO), SOT-223. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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1117-ADJ

IDCHIP · Linear Voltage Regulators (LDO) · SOT-223

1117-ADJ from IDCHIP, in a SOT-223. 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 GND/ADJ power_in Ground/adjust pin; on the adjustable version it is the ADJ reference pin (ADJ pin current 60 typ to 120 max µA, reference voltage 1.25V typ).
2 VOUT power_out Output voltage pin; the adjustable version needs at least a 22µF tantalum capacitor on the output for stability.
3 VIN power_in Input operating voltage pin, rated up to 12V.

Key specifications

Parameter Value
Manufacturer IDCHIP
Package SOT-223
Category Power Supply Chip
Pins 3

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 1.238 1.25 1.262 V IOUT=10mA, VIN-VOUT=2V, TJ=25°C 4
Reference voltage VREF 1.225 1.25 1.27 V 10mA≤IOUT≤1A, 1.4V≤VIN-VOUT≤10V 4
Line regulation Rline 3 7 mV VINMIN ≤VIN≤ 12V, VOUT=Fixed/Adj, IOUT=10mA 4
Load regulation Rload 6 12 mV 10mA≤IOUT≤ 1A, VOUT=Fixed/Adj 4
Dropout voltage Vdrop 1 1.2 V IOUT=100mA 4
Dropout voltage Vdrop 1.05 1.25 V IOUT=500mA 4
Dropout voltage Vdrop 1.1 1.3 V IOUT=1A 4
Quiescent current Iq 5 10 mA 4.25V≤VIN≤ 6.5V 4
Adjust pin current Iadj 60 120 μA 4
Adjust pin current change 0.2 5 μA 0≤ IOUT≤1A, 1.4V ≤VIN-VOUT≤10V 4
Current limit Ilimit 1 1.1 1.2 A 4
Ripple rejection PSRR 60 75 dB fRIPPLE=120Hz, (VIN-VOUT)=3V, VRIPPLE=1VPP 4
Output voltage temperature stability TSOUT 0.3 % 4
Thermal shutdown point TSD 150 °C 4
Temperature stability 0.5 % 5
RMS output noise 0.003 % % of VOUT, 10Hz≤f≤10kHz 5
Input voltage VIN 12 V 3
Lead temperature TLead 260 °C soldering 5 s 3
Operating junction temperature TJ 150 °C 3
Storage temperature TSTG -65 150 °C 3
ESD capability ESD 2000 V minimum 3
Input voltage VIN 12 V 3
Operating junction temperature TJ -40 125 °C 3
Thermal resistance junction to ambient θJA 120 °C/W SOT-223-3L, no heatsink 5

CAD (KiCad official)

  • Symbol: 1117-ADJ
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)
  • 3D model files: 1117-adj-etched.step / 1117-adj-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1117-adj.step / 1117-adj.glb are the bare package body.

Provenance

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

  • Datasheet: IDCHIP datasheet (9 pp, sha256 60fb0caaa2fd63e8, retrieved 2026-10-22, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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