component
UM14233S
Public Made by Adomby adom
Union Semiconductor Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-3. 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
markdownUM14233S
Union Semiconductor · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-3
UM14233S from Union Semiconductor, in a SOT-23-3. 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 | power_in | Ground. |
| 2 | VOUT | power_out | Voltage regulated output (3.3V for UM14233S); a 1µF tantalum or 6.8µF ceramic output capacitor is recommended for stability. |
| 3 | VDD | power_in | Supply voltage input, 12V recommended maximum and 14V absolute maximum, with a 1µF input capacitor recommended. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Union Semiconductor |
| Package | SOT-23-3 |
| 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 Accuracy | -3 | 3 | % | IOUT=300mA | 6 | ||
| Output Voltage Temperature Coefficient | ΔVOUT/ΔT·VOUT | -100 | 100 | ppm/°C | IOUT=10mA | 6 | |
| Line Regulation | ΔVOUT/ΔVIN·VOUT | 0.05 | 0.2 | %/V | IOUT=10mA 4V≤VDD≤6V | 6 | |
| Supply Current | IS | 8 | 15 | μA | VIN=Set VOUT+1V VOUT Floating | 6 | |
| Max Input Voltage | VIN | 14 | V | 5 | |||
| Max Input Voltage | VIN | 12 | V | 5 | |||
| Power Dissipation | PD | 250 | mW | 5 | |||
| Operating Junction Temperature | TJ | 125 | °C | 5 | |||
| Ambient Temperature | TA | -40 | 85 | °C | 5 | ||
| Storage Temperature Range | TSTG | -40 | 150 | °C | 5 | ||
| Lead Temperature for Soldering | TL | 260 | °C | 10 Seconds | 5 | ||
| Load Regulation | ΔVOUT | 60 | mV | VIN=Set VOUT+1V 1mA≤IOUT≤300mA | 6 | ||
| Maximum Output Current | IOUT (Max) | 300 | mA | VIN-VOUT=1V | 6 | ||
| Dropout Voltage | VDROP | 270 | mV | IOUT=150mA | 6 | ||
| Power Supply Ripple Rejection | PSRR | 60 | dB | f=100Hz, Ripple=0.5Vp-p, VIN=Set VOUT+1V | 6 | ||
| Output Voltage | VOUT | 3.3 | V | 3 |
CAD (KiCad official)
- Symbol:
UM14233S - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files:
um14233s-etched.step/um14233s-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);um14233s.step/um14233s.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Union Semiconductor datasheet (10 pp, sha256
efefd5351aec9444, retrieved 2026-10-19, tier: lcsc) - 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).