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MS78L08

Public Made by Adom

by adom

MSKSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MS78L08

MSKSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89

MS78L08 from MSKSEMI, 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 VO power_out Regulated 8 V output (7.7 V to 8.3 V at Tj=25°C), rated for a maximum output current of 100 mA and decoupled with a 0.1 µF capacitor CO to GND.
2 GND power_in Ground reference common to input and output, connected to the return of the 0.33 µF input and 0.1 µF output capacitors.
3 VI power_in Unregulated input voltage, specified for 10.5 V to 23 V line regulation, with a 0.33 µF input capacitor CI to GND and an absolute maximum of 30 V for the 3.3 V-9 V output versions.

Key specifications

Parameter Value
Manufacturer MSKSEMI
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 (Tj=25℃) VO 7.7 8 8.3 V Tj=25℃ 4
Output voltage (line/load window) VO 7.6 8.4 V 10.5V≤Vi≤23V, IO=1mA-40mA 4
Output voltage (full load) VO 7.6 8.4 V VI=14V, IO=1mA-70mA 4
Load regulation Regload 15 80 mV Tj=25℃, IO=1mA-100mA 4
Load regulation Regload 8 40 mV Tj=25℃, IO=1mA-40mA 4
Line regulation Regline 20 175 mV 10.5V≤Vi≤23V, Tj=25℃ 4
Line regulation Regline 12 125 mV 11V≤Vi≤23V, Tj=25℃ 4
Input bias current IIB 3 6 mA Tj=25℃ 4
Input bias current IIB 5.5 mA Tj=125℃ 4
Input bias current change △IIB 1.5 mA 11V≤Vi≤23V 4
Input bias current change △IIB 0.1 mA 1mA≤IO≤40mA 4
Ripple rejection RR 37 57 dB IO=40mA, 12V≤Vi≤23V, f=120Hz, Tj=25℃ 4
Output noise voltage VN 60 μV TA=25℃, 10Hz≤f≤100KHz 4
Dropout voltage VI-VO 1.7 V Tj=25℃ 4
Output current (maximum) ICM 100 mA 2
Power dissipation PD 500 mW 2
Operating junction temperature TOPR -40 125 ℃ 2
Storage temperature range Tj,Tstg -40 150 ℃ 2

CAD (KiCad official)

  • Symbol: MS78L08
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89 (KiCad packages3D, STEP)
  • 3D model files: ms78l08-etched.step / ms78l08-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ms78l08.step / ms78l08.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: MSKSEMI datasheet (9 pp, sha256 2cc74d0a15df86ee, retrieved 2026-10-18, 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