component
MC79L12ACPRPG
Public Made by Adomby adom
onsemi Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-92. 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
markdownMC79L12ACPRPG
onsemi · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-92
MC79L12ACPRPG from onsemi, in a TO-92. 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 | Common ground for the regulator; the datasheet states a common ground is required between the input and output voltages. |
| 2 | Input | power_in | Negative unregulated input; the absolute maximum input voltage for the -12 V device is -35 Vdc, and the input must remain typically 2.0 V above the output even at the low point of the ripple, with a 0.33 µF or larger bypass capacitor recommended if the regulator is far from the supply filter. |
| 3 | Output | power_out | Regulated -12 V output (-11.5 V to -12.5 V at TJ = +25°C for the MC79L12AC); a 0.1 µF output capacitor is recommended to improve stability and transient response. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | TO-92 |
| 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 (TJ = +25°C) | VO | -11.5 | -12 | -12.5 | Vdc | TJ = +25°C | 3 |
| Output Voltage | VO | -11.4 | -12.6 | Vdc | −14.5 Vdc ≥ VI ≥ −27 Vdc, 1.0 mA ≤ IO ≤ 40 mA | 3 | |
| Input Regulation | Regline | 250 | mV | TJ = +25°C; −14.5 Vdc ≥ VI ≥ −27 Vdc | 3 | ||
| Input Regulation | Regline | 200 | mV | TJ = +25°C; −16 Vdc ≥ VI ≥ −27 Vdc | 3 | ||
| Load Regulation | Regload | 100 | mV | TJ = +25°C, 1.0 mA ≤ IO ≤ 100 mA | 3 | ||
| Load Regulation | Regload | 50 | mV | 1.0 mA ≤ IO ≤ 40 mA | 3 | ||
| Input Bias Current (TJ = +25°C) | IIB | 6.5 | mA | TJ = +25°C | 3 | ||
| Input Bias Current (TJ = +125°C) | IIB | 6 | mA | TJ = +125°C | 3 | ||
| Input Bias Current Change | IIB | 1.5 | mA | −16 Vdc ≥ VI ≥ −27 Vdc | 3 | ||
| Input Bias Current Change | IIB | 0.2 | mA | 1.0 mA ≤ IO ≤ 40 mA | 3 | ||
| Ripple Rejection | RR | 37 | 42 | dB | −15 ≤ VI ≤ −25 Vdc, f = 120 Hz, TJ = +25°C | 3 | |
| Input Voltage (−12 V device) | VI | -35 | Vdc | 2 | |||
| Storage Temperature Range | Tstg | -65 | 150 | °C | 2 | ||
| Junction Temperature | TJ | 150 | °C | 2 | |||
| Operating Junction Temperature Range (AC grade) | TJ | 0 | 125 | °C | 0°C < TJ < +125°C (for MC79LXXAC) | 3 | |
| Thermal Resistance, Junction-to-Ambient (TO-92) | RJA | 160 | °C/W | Case 29 (TO−92 Type), TA = 25°C | 2 | ||
| Thermal Resistance, Junction-to-Case (TO-92) | RJC | 83 | °C/W | Case 29 (TO−92 Type), TA = 25°C | 2 |
CAD (KiCad official)
- Symbol:
MC79L12ACPRPG - Footprint:
Package_TO_SOT_THT:TO-92_Inline - 3D model: TO-92 (KiCad packages3D, STEP)
- 3D model files:
mc79l12acprpg-etched.step/mc79l12acprpg-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mc79l12acprpg.step/mc79l12acprpg.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (14 pp, sha256
b08d5a66bfbac8c6, 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).