component

PJ79L05SQ

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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PJ79L05SQ

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

PJ79L05SQ 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 GND power_in Ground (common) reference pin for the negative fixed-voltage regulator.
2 VIN power_in Negative unregulated input voltage; the datasheet's absolute maximum input voltage is -VI 30 V.
3 VOUT power_out Regulated negative output voltage (-5 V for PJ79L05SQ), with output current up to 100 mA.

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
Output Voltage -VO 4.8 5 5.2 V TJ=25°C 3
Output Voltage -VO 4.75 5.25 V IO=1mA to 40mA, VI=7V to 20V 3
Line Regulation △VO 15 150 mV VI=-7V to -20V, TJ=25°C 3
Line Regulation △VO 100 mV VI=-8V to -20V, TJ=25°C 3
Load Regulation △VO 60 mV IO=1mA to 100mA, TJ=25°C 3
Load Regulation △VO 10 30 mV IO=1mA to 40mA, TJ=25°C 3
Ripple Rejection RR 41 49 dB VI=-8V to -18V, f=120Hz, TJ=25°C 3
Quiescent Current IQ 6 mA TJ=25°C 3
Quiescent Current Change △IQ 1.5 mA VI=-8V to -20V 3
Quiescent Current Change △IQ 0.1 mA IO=1mA to 40mA 3
Input Voltage -VI 30 V 2
Output Current IO 100 mA 2
Maximum Power Dissipation PD 500 mW 2
Junction Temperature TJ 125 °C 2
Operating Temperature Range TOPR 0 125 °C 2
Storage Temperature Range TSTG -65 150 °C 2
Dropout Voltage VD 1.7 V 3
Output Noise Voltage VN 120 μV 10Hz≤f≤100kHz, TJ=25°C 3

CAD (KiCad official)

  • Symbol: PJ79L05SQ
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89 (KiCad packages3D, STEP)
  • 3D model files: pj79l05sq-etched.step / pj79l05sq-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); pj79l05sq.step / pj79l05sq.glb are the bare package body.

Provenance

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

  • Datasheet: PJSEMI datasheet (9 pp, sha256 f0d966b0fd1a8fe5, retrieved 2026-10-19, 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