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KIA7912PI-U
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KEC Semicon Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220F. 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
markdownKIA7912PI-U
KEC Semicon · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-220F
KIA7912PI-U from KEC Semicon, in a TO-220F. 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 pin of the -12V regulator. |
| 2 | INPUT | power_in | Negative input voltage pin; absolute maximum VIN is -35 V, with VIN = -18 V used for the electrical characteristics. |
| 3 | OUTPUT | power_out | Regulated -12 V output (-12.5 V min to -11.5 V max at Tj=25C), providing output current in excess of 1.0 A with internal short-circuit limiting (typ. 1.9 A). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | KEC Semicon |
| Package | TO-220F |
| 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 | -12.5 | -12 | -11.5 | V | Tj=25℃ | 3 |
| Output Voltage | VOUT | -12.6 | -12 | -11.4 | V | -27V≤VIN≤-15.5V, 5mA≤IOUT≤1.0A | 3 |
| Input Regulation (Reg line) | Reg line | 6 | 120 | mV | Tj=25℃, -22V≤VIN≤-16V | 3 | |
| Input Regulation (Reg line) | Reg line | 12 | 240 | mV | Tj=25℃, -30V≤VIN≤-14.5V | 3 | |
| Load Regulation (Reg load) | Reg load | 12 | 240 | mV | Tj=25℃, 5mA≤IOUT≤1.5A | 3 | |
| Load Regulation (Reg load) | Reg load | 4 | 120 | mV | Tj=25℃, 250mA≤IOUT≤750mA | 3 | |
| Quiescent Current | IB | 3 | 6 | mA | Tj=25℃ | 3 | |
| Quiescent Current Change (Line) | IBI | 0.1 | 1 | mA | -30V≤VIN≤-15V | 3 | |
| Quiescent Current Change (Load) | IBO | 0.05 | 0.5 | mA | 5mA≤IOUT≤1.0A | 3 | |
| Ripple Rejection Ratio | RR | 54 | 60 | dB | f=120Hz, IOUT=20mA | 3 | |
| Input Voltage | VIN | -35 | V | 1 | |||
| Power Dissipation-1 | PD1 | 2 | W | No heatsink | 1 | ||
| Power Dissipation-2 | PD2 | 20.8 | W | Infinite heatsink | 1 | ||
| Operating Junction Temperature | Tj | -30 | 150 | °C | 1 | ||
| Operating Temperature | Topr | -30 | 75 | °C | 1 | ||
| Storage Temperature | Tstg | -55 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
KIA7912PI-U - Footprint:
Package_TO_SOT_THT:TO-220F-3_Vertical - 3D model: TO-220F (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: KEC Semicon datasheet (5 pp, sha256
8b0e09401e58c716, retrieved 2026-11-06, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).