component
LM1117MK-3.3
Public Made by Adomby adom
HGSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. 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
markdownLM1117MK-3.3
HGSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3
LM1117MK-3.3 from HGSEMI, in a SOT-89-3. 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 pin for the fixed-output LM1117MK-3.3; the datasheet shares this pin as ADJ for the adjustable version. |
| 2 | VOUT | power_out | Regulated output voltage pin, rated for up to 800 mA output current with 1.2 V typical dropout at 800 mA. |
| 3 | VIN | power_in | Input supply pin; the datasheet recommends a maximum input voltage of 12 V, with an absolute maximum of 15 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | SOT-89-3 |
| Category | Power Management (PMIC) |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
LM1117MK-3.3 - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
lm1117mk-3-3-etched.step/lm1117mk-3-3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm1117mk-3-3.step/lm1117mk-3-3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HGSEMI datasheet (10 pp, sha256
14d5d7f5b1118842, retrieved 2026-10-09, 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-haiku-5-5(text), consensusclaude-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).