component

PJ73AL33SQ

Public Made by Adom

by adom

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

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PJ73AL33SQ

PJSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3

PJ73AL33SQ 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 power_in Ground reference terminal of the regulator, shown as the first of three SOT-89 pin labels (GND, VIN, VOUT) in the pin assignment figure.
2 VIN power_in Regulator input, rated up to 20 V (input voltage VIN max 20 V), with VIN of at least VOUT + 1.0 V needed for line regulation and VIN = VOUT + 2.0 V used for the output-current test.
3 VOUT power_out Fixed 3.3 V regulated output for the PJ73AL33SQ (3.234 V to 3.366 V at IOUT = 10 mA), specified for output current of at least 300 mA at VIN = VOUT + 2.0 V.

Key specifications

Parameter Value
Manufacturer PJSEMI
Package SOT-89-3
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 VOUT 3.234 3.3 3.366 V VIN=VOUT+2.0V, IOUT=10mA 5
Output current IOUT 300 mA VIN=VOUT+2.0V 5
Load regulation ΔVOUT 37 100 mV VIN=VOUT+2.0V, 1mA≤IOUT≤300mA 5
Voltage drop VDIF 195 300 mV IOUT=100mA, ΔVOUT=2% 5
Quiescent current IQ 1.5 3 μA No load 5
Line regulation ΔVOUT / VOUT×ΔVIN 0.2 %/V VOUT+1.0V≤VIN≤20V, IOUT=1mA 5
Input voltage VIN 20 V 5
Temperature coefficient ΔVOUT /VOUT×ΔTA 100 ppm/℃ VIN=VOUT+2.0V, IOUT=10mA, -40℃≤TA≤85℃ 5
Short current IShort 400 mA VOUT=0V 5
Supply voltage (absolute maximum) VIN -0.3 22 V Absolute maximum rating, 25℃ ambient 2
Storage temperature range TSTG -50 125 ℃ Absolute maximum rating, 25℃ ambient 2
Operating temperature range TA -40 85 ℃ Absolute maximum rating, 25℃ ambient 2
Junction-to-ambient thermal resistance RθJA 200 ℃/W TA=25℃ 2
Power consumption PD 500 mW TA=25℃ 2

CAD (KiCad official)

  • Symbol: PJ73AL33SQ
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3 (KiCad packages3D, STEP)
  • 3D model files: pj73al33sq-etched.step / pj73al33sq-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); pj73al33sq.step / pj73al33sq.glb are the bare package body.

Provenance

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

  • Datasheet: PJSEMI datasheet (11 pp, sha256 006cef8239e0f7cc, retrieved 2026-10-18, 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