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ICW1235A50S3GQ1

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

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ICW1235A50S3GQ1

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

ICW1235A50S3GQ1 from ICW, 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 VIN power_in Voltage input; operating range 2.2 V to 40 V (absolute maximum -0.3 to 45 V), with CIN of 1 µF or more placed close to the IC.
2 GND power_in Ground; the SOT223 tab (also marked 2) is connected to ground and improves thermal performance.
3 VOUT power_out Regulated voltage output (5.0 V for this variant), up to 200 mA, with COUT of 1 µF or more; must not exceed VIN+0.3 V.

Key specifications

Parameter Value
Manufacturer ICW
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
Output voltage VOUT(S) 0.98 1.02 xVOUT(S) VIN=VOUT(S)+2V, IOUT=1mA 5
Dropout voltage VDROP 4 8 mV VEN=VIN, VOUT(S)=3.3V, IOUT=1mA 5
Line regulation ΔVOUT/(ΔVIN·VOUT) 0.01 0.02 %/V VOUT(S)+2V≤VIN≤40V, IOUT=1mA 5
Load regulation ΔVOUT 20 40 mV VOUT(S)≤5.3V, VIN=VOUT(S)+2V, 1mA≤IOUT≤200mA 5
Temperature stability ΔVOUT/(ΔTa·VOUT(S)) -50 50 ppm/°C VIN=VOUT(S)+2V, IOUT=10mA, -40≤Ta≤125 5
Ground current IGND 1 1.5 2.5 uA VEN=VIN, no load, 3.0≤VOUT(S)≤5.3V 5
Ground current at 100mA IGND 420 uA VEN=VIN, IOUT=100mA 5
Shutdown current ISHUT 0.1 1 uA VIN=40.0V, VEN=0 5
Operating voltage VIN 2.2 40 V 5
Maximum output current IOUTMAX 150 200 mA 5
Output current limit ILIM 200 450 mA VIN=VOUT(S)+2V, VOUT=0.95×VOUT(S) 5
Short-circuit current ISHORT 65 mA VIN=VEN=VOUT(S)+2.0V, VOUT=0V 5
PSRR 100Hz PSRR 79 dB f=100Hz, IOUT=10mA 5
PSRR 1kHz PSRR 62 dB f=1kHz, IOUT=10mA 5
PSRR 10kHz PSRR 48 dB f=10kHz, IOUT=10mA 5
PSRR 100kHz PSRR 40 dB f=100kHz, IOUT=10mA 5
EN high level VENH 1.5 40 V 5
EN low level VENL 0 0.6 V 5
EN high leakage IENH -0.1 0.1 uA VIN=40V, VEN=VIN 5
EN low leakage IENL -0.1 0.1 uA VIN=40V, VEN=0 5
Over-temperature protection OTP 170 °C IOUT=1mA 5
Input voltage (abs max) VIN -0.3 45 V 4
Power dissipation SOT223-3 PD 1500 W SOT223-3 4
Operating ambient temperature Topr -40 125 °C 4
Storage temperature Tstg -55 150 °C 4
ESD HBM ESD -4000 4000 V HBM 4
Thermal resistance junction-ambient SOT223-3 RθJA 66 °C/W SOT223-3 4

CAD (KiCad official)

  • Symbol: ICW1235A50S3GQ1
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)
  • 3D model files: icw1235a50s3gq1-etched.step / icw1235a50s3gq1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); icw1235a50s3gq1.step / icw1235a50s3gq1.glb are the bare package body.

Provenance

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

  • Datasheet: ICW datasheet (14 pp, sha256 4fff9da69f54760e, 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+vision), consensus claude-opus-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