component
PJ79L05SQ
Public Made by Adomby adom
PJSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89. 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
markdownPJ79L05SQ
PJSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89
PJ79L05SQ 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 | GND | power_in | Ground (common) reference pin for the negative fixed-voltage regulator. |
| 2 | VIN | power_in | Negative unregulated input voltage; the datasheet's absolute maximum input voltage is -VI 30 V. |
| 3 | VOUT | power_out | Regulated negative output voltage (-5 V for PJ79L05SQ), with output current up to 100 mA. |
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 | 4.8 | 5 | 5.2 | V | TJ=25°C | 3 |
| Output Voltage | -VO | 4.75 | 5.25 | V | IO=1mA to 40mA, VI=7V to 20V | 3 | |
| Line Regulation | △VO | 15 | 150 | mV | VI=-7V to -20V, TJ=25°C | 3 | |
| Line Regulation | △VO | 100 | mV | VI=-8V to -20V, TJ=25°C | 3 | ||
| Load Regulation | △VO | 60 | mV | IO=1mA to 100mA, TJ=25°C | 3 | ||
| Load Regulation | △VO | 10 | 30 | mV | IO=1mA to 40mA, TJ=25°C | 3 | |
| Ripple Rejection | RR | 41 | 49 | dB | VI=-8V to -18V, f=120Hz, TJ=25°C | 3 | |
| Quiescent Current | IQ | 6 | mA | TJ=25°C | 3 | ||
| Quiescent Current Change | △IQ | 1.5 | mA | VI=-8V to -20V | 3 | ||
| Quiescent Current Change | △IQ | 0.1 | mA | IO=1mA to 40mA | 3 | ||
| Input Voltage | -VI | 30 | V | 2 | |||
| Output Current | IO | 100 | mA | 2 | |||
| Maximum Power Dissipation | PD | 500 | mW | 2 | |||
| Junction Temperature | TJ | 125 | °C | 2 | |||
| Operating Temperature Range | TOPR | 0 | 125 | °C | 2 | ||
| Storage Temperature Range | TSTG | -65 | 150 | °C | 2 | ||
| Dropout Voltage | VD | 1.7 | V | 3 | |||
| Output Noise Voltage | VN | 120 | μV | 10Hz≤f≤100kHz, TJ=25°C | 3 |
CAD (KiCad official)
- Symbol:
PJ79L05SQ - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files:
pj79l05sq-etched.step/pj79l05sq-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);pj79l05sq.step/pj79l05sq.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: PJSEMI datasheet (9 pp, sha256
f0d966b0fd1a8fe5, retrieved 2026-10-19, 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).