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Contents

README

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PJ78L06SQ

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

PJ78L06SQ 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 OUT power_out Regulated 6 V output that delivers up to 100 mA, with internal thermal overload protection and short-circuit limiting.
2 GND power_in Common ground reference pin; the datasheet gives no electrical limit specific to this pin.
3 IN power_in Unregulated input pin with a maximum input voltage of 30 V, used with a 0.33 µF input capacitor (C1) in the application circuit.

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 5.76 6 6.24 V TJ=25℃ 2
Output Voltage VO 5.7 6 6.3 V IO=1mA to 40mA VI=8.5V to 21V 2
Line Regulation △Vo 155 mV VI=8.5V to 21V TJ=25℃ 2
Line Regulation △Vo 105 mV VI=9V to 21V TJ=25℃ 2
Load Regulation △VO 65 mV IO=1mA to 100 mA, TJ=25℃ 2
Load Regulation △VO 35 mV IO=1mA to 40 mA, TJ=25℃ 2
Ripple Rejection RR 40 dB VI=9V to 19V, TJ=25℃ f=120Hz 2
Output Noise Voltage VN 49 μV f=10Hz~100KHz TJ=25℃ 2
Dropout Voltage VD 1.7 V TJ=25℃ 2
Quiescent Current IQ 5.5 mA TJ=25℃ 2
Quiescent Current Change △IQ 1.5 mA VI=9V to 21V, IO=40mA 2
Quiescent Current Change △IQ 0.1 mA VI=11V, IO=1mA to 40mA 2
Input Voltage VI 30 V 1
Output Current IO 100 mA 1
Junction Temperature TJ 150 ℃ 1
Power Dissipation PD 500 mW 1
Storage Temperature Range TSTG -55 150 ℃ 1
Operating Temperature Range TOPR -40 125 ℃ 1

CAD (KiCad official)

  • Symbol: PJ78L06SQ
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89 (KiCad packages3D, STEP)
  • 3D model files: pj78l06sq-etched.step / pj78l06sq-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); pj78l06sq.step / pj78l06sq.glb are the bare package body.

Provenance

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

  • Datasheet: PJSEMI datasheet (4 pp, sha256 c230e9ef247a6720, 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