component
PJ73AL33SQ
Public Made by Adomby 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.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownPJ73AL33SQ
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);pj73al33sq.step/pj73al33sq.glbare 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, primaryclaude-haiku-5-5(text), consensusclaude-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).