component

78S05M

Public Made by Adom

by 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.

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78S05M

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 78s05m.step / 78s05m.glb are 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, primary claude-sonnet-5-5 (text+vision), consensus claude-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).

Datasheet PDF