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LM79L12F
Public Made by Adomby adom
HTC Korea TAEJIN Tech Linear Voltage Regulators (LDO), 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
markdownLM79L12F
HTC Korea TAEJIN Tech · Linear Voltage Regulators (LDO) · SOT-89-3
LM79L12F from HTC Korea TAEJIN Tech, 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 pin for the regulator; the datasheet defines it as Ground. |
| 2 | VIN | power_in | Negative input voltage; recommended range is -14.5V to -27V for the LM79L12, with an absolute maximum of -35V. |
| 3 | VOUT | power_out | Regulated negative output voltage of -12V nominal, delivering up to 100mA of output current. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HTC Korea TAEJIN Tech |
| Package | SOT-89-3 |
| Category | Power Management ICs |
| 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 |
|---|---|---|---|---|---|---|---|
| Input Voltage | VIN | -35 | V | LM79L12 ~ LM79L18 | 1 | ||
| Storage Temperature Range | TSTG | -65 | 150 | ℃ | 1 | ||
| Lead Temperature (Soldering, 10 sec) | TSOL | 260 | ℃ | 1 | |||
| Operating Junction Temperature Range | TJOPR | 0 | 150 | ℃ | 1 | ||
| Input Voltage (recommended) | VIN | -14.5 | -27 | V | LM79L12 | 2 | |
| Output Current | Io | 100 | mA | 2 | |||
| Operating Virtual Junction Temperature | TJ | 0 | 125 | ℃ | 2 | ||
| Output Voltage | VOUT | -11.5 | -12 | -12.5 | V | 25℃; 1mA ≤ Io ≤ 40mA; -14.5V ≤ VIN ≤ -27V | 7 |
| Output Voltage | VOUT | -11.4 | -12 | -12.6 | V | 0℃ ~ 125℃; 1mA ≤ Io ≤ 70mA | 7 |
| Line Regulation | ΔVLINE | 50 | 250 | mV | -14.5V ≤ VIN ≤ -27V | 7 | |
| Line Regulation | ΔVLINE | 40 | 200 | mV | -16V ≤ VIN ≤ -27V; 25℃ | 7 | |
| Load Regulation | ΔVLOAD | 24 | 100 | mV | 1mA ≤ Io ≤ 100mA | 7 | |
| Load Regulation | ΔVLOAD | 15 | 50 | mV | 1mA ≤ Io ≤ 40mA; 25℃ | 7 | |
| Bias Current | IB | 6.5 | mA | 25℃ | 7 | ||
| Bias Current | IB | 6 | mA | 125℃ | 7 | ||
| Bias Current Change | ΔIB | 1.5 | mA | -16V ≤ VIN ≤ -27V | 7 | ||
| Bias Current Change | ΔIB | 0.1 | mA | 1mA ≤ Io ≤ 40mA; 0℃ ~ 125℃ | 7 | ||
| Output Noise Voltage | VN | 70 | uV | 10Hz ≤ f ≤ 100kHz; 25℃ | 7 | ||
| Ripple Rejection | RR | 37 | 42 | dB | -15V ≤ VIN ≤ -25V, f=120Hz; 25℃ | 7 | |
| Dropout Voltage | VD | 1.7 | V | 25℃ | 7 |
CAD (KiCad official)
- Symbol:
LM79L12F - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
lm79l12f-etched.step/lm79l12f-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm79l12f.step/lm79l12f.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HTC Korea TAEJIN Tech datasheet (10 pp, sha256
26e775a1971f58c3, retrieved 2026-10-27, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusoff(skipped (clean text read)), 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).