component

PJ78M05SQ

Public Made by Adom

by adom

PJSEMI 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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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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PJ78M05SQ

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

PJ78M05SQ from PJSEMI, 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 VOUT power_out Regulated 5 V output (4.75 V to 5.25 V over IO = 5 mA to 350 mA, VI = 7 V to 20 V), rated for output current up to 500 mA.
2 GND power_in Common ground reference pin for the regulator.
3 VIN power_in Unregulated input supply, with an input voltage rating of up to 35 V (absolute maximum VI = 35 V).

Key specifications

Parameter Value
Manufacturer PJSEMI
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
Input Voltage VI 35 V 1
Output Current IO 500 mA 1
Junction Temperature TJ 150 °C 1
Maximum Power Dissipation PD 1 W P.C.B. mounted with 2.0" X 2.0" (5 X 5 cm) copper pad areas (Note 1) 1
Operating Temperature Range TOPR -40 125 °C 1
Storage Temperature Range TSTG -55 150 °C 1
Output Voltage VO 4.8 5 5.2 V IO=5mA to 350mA, VI=7V to 20V 2
Output Voltage VO 4.75 5 5.25 V 2
Line Regulation △VO 100 mV VI=7V to 25V, IO=200mA 2
Line Regulation △VO 50 mV VI=8V to 25V, IO=200mA 2
Load Regulation △VO 100 mV IO=5mA to 500mA, TJ=25°C 2
Load Regulation △VO 50 mV IO=5mA to 200 mA, TJ=25°C 2
Ripple Rejection RR 62 dB VI=8V to18V, f=120Hz, IO=300mA 2
Quiescent Current IQ 6 mA 2
Quiescent Current Change △IQ 0.8 mA VI=8V to 25V,IO=200mA 2
Quiescent Current Change △IQ 0.5 mA IO=5mA to 350mA 2

CAD (KiCad official)

  • Symbol: PJ78M05SQ
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89 (KiCad packages3D, STEP)
  • 3D model files: pj78m05sq-etched.step / pj78m05sq-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); pj78m05sq.step / pj78m05sq.glb are the bare package body.

Provenance

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

  • Datasheet: PJSEMI datasheet (3 pp, sha256 aee633fc234e68f8, retrieved 2026-10-14, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF