component

PJ1117SQ-3.3

Public Made by Adom

by adom

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

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PJ1117SQ-3.3

PJSEMI · Linear Voltage Regulators (LDO) · SOT-89-3

PJ1117SQ-3.3 from PJSEMI, 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 GND/FB power_in Ground pin for the fixed-voltage versions and FB (ADJ) feedback pin for the adjustable version, where a bypass capacitor from FB to ground improves ripple rejection.
2 VOUT power_out Regulated output pin, rated at a maximum output current of 1A, with fixed outputs of 1.2V, 1.8V, 2.5V, 3.3V and 5V or adjustable output from 1.25V to 12V set by two external resistors.
3 VIN power_in Power input pin with a recommended maximum input voltage of 15V.

Key specifications

Parameter Value
Manufacturer PJSEMI
Package SOT-89-3
Category Power Management ICs
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 Accuracy ΔVOUT -2 2 % 0≤IOUT≤1A, VIN=VOUT+2V 7
Quiescent Current IQ 2 5 mA IOUT=0mA, VIN=12V 7
Dropout Voltage VDROP 1.15 1.3 V IOUT=100mA 7
Dropout Voltage VDROP 1.3 1.5 V IOUT=1A 7
Line Regulation ΔVLINE 0.03 0.2 %/V IOUT=10mA, VOUT+1.5V≤VIN≤12V 7
Load Regulation ΔVLOAD 36 mV 10mA≤IOUT≤1A, VIN=VOUT+1.5V 7
Recommended Maximum Input Voltage VIN 15 V 6
Recommended Operating Junction Temperature Topr -40 85 °C 6
Supply Voltage VIN 18 V 6
Maximum Output Current IOUT 1 A 6
Junction Temperature TJ 150 °C 6
Storage Temperature TSTG -40 150 °C 6
Thermal Resistance Junction-to-Case SOT-89 RθJC 45 °C/W 6
Temperature coefficient ΔV/ΔT 100 ppm 7

CAD (KiCad official)

  • Symbol: PJ1117SQ-3.3
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3 (KiCad packages3D, STEP)
  • 3D model files: pj1117sq-3-3-etched.step / pj1117sq-3-3-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); pj1117sq-3-3.step / pj1117sq-3-3.glb are the bare package body.

Provenance

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

  • Datasheet: PJSEMI datasheet (11 pp, sha256 d025f5768cbbd884, retrieved 2026-10-28, 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