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ICW1235A33S3GQ1
Public Made by Adomby adom
ICW Linear Voltage Regulators (LDO), SOT-223. 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
markdownICW1235A33S3GQ1
ICW · Linear Voltage Regulators (LDO) · SOT-223
ICW1235A33S3GQ1 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 2.2V to 40V (absolute maximum 45V). |
| 2 | GND | power_in | Ground; the tab (also marked 2) is connected to ground to improve thermal performance. |
| 3 | VOUT | power_out | Regulated voltage output (3.3V fixed, up to 200mA); must not exceed VIN+0.3V. |
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) | 2 | V | VIN=VOUT(S)+2V, IOUT=1mA | 7 | ||
| Dropout voltage 1mA | VDROP | 4 | 8 | mV | VEN=VIN, VOUT(S)=3.3V, IOUT=1mA | 7 | |
| Dropout voltage 200mA | VDROP | 120 | 1800 | mV | VEN=VIN, VOUT(S)=3.3V, IOUT=200mA | 7 | |
| Line regulation | ΔVOUT/(ΔVIN·VOUT) | 0.01 | 0.02 | %/V | VOUT(S)+2V≤VIN≤40V, IOUT=1mA | 7 | |
| Load regulation | ΔVOUT2 | 20 | 40 | mV | VOUT(S)≤5.3V, VIN=VOUT(S)+2V, 1mA≤IOUT≤200mA | 7 | |
| Temperature stability | ΔVOUT/(ΔTa·VOUT(S)) | -50 | 50 | ppm/℃ | VIN=VOUT(S)+2V, IOUT=10mA, -40≤Ta≤125℃ | 7 | |
| Ground current | IGND | 1 | 1.5 | 2.5 | uA | VEN=VIN, no load, 3.0≤VOUT(S)≤5.3V | 7 |
| Ground current at 100mA | IGND | 420 | uA | IOUT=100mA | 7 | ||
| Shutdown current | ISHUT | 0.1 | 1 | uA | VIN=40.0V, VEN=0 | 7 | |
| Operating voltage | VIN | 2.2 | 40 | V | 7 | ||
| Maximum output current | IOUTMAX | 150 | 200 | mA | 7 | ||
| Output current limit | ILIM | 200 | 450 | mA | VIN=VOUT(S)+2V, VOUT=0.95×VOUT(S) | 7 | |
| Short circuit current | ISHORT | 65 | mA | VIN=VEN=VOUT(S)+2.0V, VOUT=0V | 7 | ||
| EN high voltage | VENH | 1.5 | 40 | V | 7 | ||
| EN low voltage | VENL | 0 | 0.6 | V | 7 | ||
| EN high leakage | IENH | -0.1 | 0.1 | uA | VIN=40V, VEN=VIN | 7 | |
| EN low leakage | IENL | -0.1 | 0.1 | uA | VIN=40V, VEN=0 | 7 | |
| PSRR 100Hz | PSRR | 79 | dB | f=100Hz, IOUT=10mA | 7 | ||
| PSRR 1kHz | PSRR | 62 | dB | f=1kHz, IOUT=10mA | 7 | ||
| PSRR 10kHz | PSRR | 48 | dB | f=10kHz, IOUT=10mA | 7 | ||
| PSRR 100kHz | PSRR | 40 | dB | f=100kHz, IOUT=10mA | 7 | ||
| Over-temperature protection | OTP | 170 | ℃ | IOUT=1mA | 7 | ||
| Input voltage | VIN | -0.3 | 45 | V | 6 | ||
| Power dissipation SOT223-3 | PD | 1500 | W | SOT223-3 | 6 | ||
| Thermal resistance junction to ambient SOT223-3 | RθJA | 66 | ℃/W | SOT223-3 | 6 | ||
| Operating ambient temperature | Topr | -40 | 125 | ℃ | 6 | ||
| Storage temperature | Tstg | -55 | 150 | ℃ | 6 | ||
| ESD HBM | ESD | -4000 | 4000 | V | HBM | 6 |
CAD (KiCad official)
- Symbol:
ICW1235A33S3GQ1 - Footprint:
Package_TO_SOT_SMD:SOT-223-3_TabPin2 - 3D model: SOT-223 (KiCad packages3D, STEP)
- 3D model files:
icw1235a33s3gq1-etched.step/icw1235a33s3gq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);icw1235a33s3gq1.step/icw1235a33s3gq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ICW datasheet (16 pp, sha256
e7ab4cabf6c20998, retrieved 2026-10-23, 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, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).