component
AMS1117-3.3S
Public Made by Adomby adom
TECH PUBLIC Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89. 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
markdownAMS1117-3.3S
TECH PUBLIC · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89
AMS1117-3.3S from TECH PUBLIC, in a SOT-89. 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 on fixed-output versions such as the 3.3V AMS1117-3.3S, and the adjust pin on the ADJ version; the pin table lists its function as Ground/ADJ. |
| 2 | VOUT | power_out | Regulated output voltage pin (3.3V, 3.234 to 3.366V at IOUT=10mA, VIN=5V, TJ=25C) which needs a 22uF tantalum output capacitor for stability. |
| 3 | VIN | power_in | Input supply voltage pin with an absolute maximum of 18V and a recommended operating value of 12V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOT-89 |
| Category | Power Management (PMIC) |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
AMS1117-3.3S - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files:
ams1117-3-3s-etched.step/ams1117-3-3s-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ams1117-3-3s.step/ams1117-3-3s.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TECH PUBLIC datasheet (7 pp, sha256
bcce846debcf262b, retrieved 2026-10-09, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(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).