component
78S05M
Public Made by Adomby adom
UNI SEMIC 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
markdown78S05M
UNI SEMIC · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3
78S05M from UNI SEMIC, 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 | VOUT | power_out | Regulated 5V output, supplying up to 150 mA output current with internal current limiting and thermal shutdown. |
| 2 | GND | power_in | Ground reference pin, connected to the input and output capacitor returns in the test circuit. |
| 3 | VIN | power_in | Unregulated input voltage, absolute maximum 30 V for 3.3 to 9 V output versions. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UNI SEMIC |
| Package | SOT-89-3 |
| 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 | Vo | 4.9 | 5.1 | V | 7V≤Vi≤20V, Io=5mA～150mA | 6 | |
| Load regulation | ΔVo | 25 | 100 | mV | Tj=25℃, Io=5mA～150mA | 6 | |
| Load regulation | ΔVo | 10 | 50 | mV | Tj=25℃, Io=5mA～100mA | 6 | |
| Line regulation | ΔVo | 4 | 100 | mV | 7V≤Vi≤25V, Io=100mA, Tj=25℃ | 6 | |
| Line regulation | ΔVo | 2 | 50 | mV | 8V≤Vi≤25V, Io=100mA, Tj=25℃ | 6 | |
| Quiescent current | Iq | 3.2 | 6 | mA | Tj=25℃ | 6 | |
| Quiescent current change | ΔIq | 0.8 | mA | 8V≤Vi≤25V, Io=100mA | 6 | ||
| Quiescent current change | ΔIq | 0.5 | mA | 5mA≤Io≤150mA | 6 | ||
| Output noise voltage | VN | 40 | µV | 10Hz≤f≤100kHz | 6 | ||
| Supply voltage rejection | RR | 41 | 50 | dB | 10V≤Vi≤20V; f=120Hz; Tj=25°C | 6 | |
| Dropout voltage | Vd | 1.7 | V | Tj=25°C | 6 | ||
| Output voltage tolerance | -2 | 2 | % | Feature list: available in ±2% | 2 | ||
| DC input voltage | VI | 30 | V | VO = 3.3 to 9 V | 5 | ||
| Output current | IO | 150 | mA | 5 | |||
| Power dissipation | PD | 500 | mW | SOT89 package | 5 | ||
| Storage temperature range | TSTG | -55 | 150 | °C | 5 | ||
| Operating junction temperature range | TOP | -40 | 125 | °C | 5 |
CAD (KiCad official)
- Symbol:
78S05M - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
78s05m-etched.step/78s05m-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);78s05m.step/78s05m.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UNI SEMIC datasheet (14 pp, sha256
888ad4dceef65e1f, retrieved 2026-10-20, 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).