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U1117-3.3V-SOT89
Public Made by Adomby adom
UNI-SEMIC 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
markdownU1117-3.3V-SOT89
UNI-SEMIC · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89
U1117-3.3V-SOT89 from UNI-SEMIC, 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 | power_in | Ground reference pin of the regulator. |
| 2 | VOUT | power_out | Regulated output voltage pin; the fixed 3.3V version delivers up to 1A (datasheet maximum output current is 1.4A) with 3.234V to 3.366V accuracy over 0 to 1A load. |
| 3 | VIN | power_in | Input voltage pin, with a maximum input voltage of 15V, recommended to be bypassed with a 10uF tantalum capacitor. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UNI-SEMIC |
| Package | SOT-89 |
| Category | Power Management (PMIC) |
| 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 (U1117-3.3V) | Vout | 3.234 | 3.3 | 3.366 | V | 0≤Iout≤1A, Vin=5.3V | 4 |
| Line regulation (U1117-3.3V) | △Vout | 0.03 | 0.2 | %/V | Iout=10mA, 4.8V≤Vin≤12V | 4 | |
| Load regulation (U1117-3.3) | △Vout | 6 | 24 | mV | Vin=4.8V, 10mA≤Iout≤1A | 4 | |
| Dropout voltage | Vdrop | 1.15 | 1.3 | V | Iout=100mA | 4 | |
| Dropout voltage | Vdrop | 1.3 | 1.5 | V | Iout=1A | 4 | |
| Quiescent current (U1117-3.3V) | Iq | 1.8 | 5 | mA | U1117-3.3V, Vin=12V | 4 | |
| Max operating junction temperature | Tj | 150 | ℃ | 4 | |||
| Ambient temperature | Ta | -40 | 85 | ℃ | 4 | ||
| Storage temperature | Ts | -40 | 150 | ℃ | 4 | ||
| Recommended operating junction temperature | Tj | -20 | 125 | ℃ | 4 |
CAD (KiCad official)
- Symbol:
U1117-3.3V-SOT89 - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files:
u1117-3-3v-sot89-etched.step/u1117-3-3v-sot89-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);u1117-3-3v-sot89.step/u1117-3-3v-sot89.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UNI-SEMIC datasheet (8 pp, sha256
c81808acde9c7554, retrieved 2026-11-05, tier: lcsc) - 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).