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PJ1117ST-2.5

Public Made by Adom

by adom

PJSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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PJ1117ST-2.5

PJSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223

PJ1117ST-2.5 from PJSEMI, in a SOT-223. 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 on fixed-output versions such as the 2.5V PJ1117ST-2.5 (adjust/feedback pin on the ADJ version).
2 VOUT power_out Regulated output voltage pin (2.5V fixed for this part, up to 1.0A maximum output current); also connected to the tab per the SOT-223 pin distribution.
3 VIN power_in Power input voltage pin, recommended maximum 15V (absolute maximum 18V).

Key specifications

Parameter Value
Manufacturer PJSEMI
Package SOT-223
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 Accuracy ∆VOUT -2 2 % 0≤IOUT≤1A, VIN=VOUT+2V 7
Quiescent Current IQ 2 5 mA 1.8V≤VOUT≤5V, 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 ∆VLINE 0.03 0.2 %/V 1.8V≤VOUT≤5V, IOUT=10mA, VOUT+1.5V≤VIN≤12V 7
Load Regulation ∆VLOAD 36 mV 10mA≤IOUT≤1A, VIN=VOUT+1.5V 7
Temperature coefficient ∆V/∆T 100 ppm 7
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
Lead Temperature & Time TL 260 °C 10S 6
Recommended Maximum Input Voltage VIN 15 V 6
Recommended Operating Junction Temperature Topr -40 85 °C 6
Thermal Resistance Junction-to-Case RθJC 20 °C/W SOT-223 6

CAD (KiCad official)

  • Symbol: PJ1117ST-2.5
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)
  • 3D model files: pj1117st-2-5-etched.step / pj1117st-2-5-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); pj1117st-2-5.step / pj1117st-2-5.glb are the bare package body.

Provenance

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

  • Datasheet: PJSEMI datasheet (11 pp, sha256 e8146caa8e32a60f, retrieved 2026-10-26, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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