component
LM78L09F
Public Made by Adomby adom
HTC Korea TAEJIN Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 17d ago |
| viewers | 17d ago |
| lm78l09f-etched.glb | 17d ago |
| lm78l09f-etched.step | 17d ago |
| lm78l09f-hero.glb | 17d ago |
| lm78l09f-hero.overlay.json | 17d ago |
| lm78l09f.glb | 17d ago |
| lm78l09f.kicad_mod | 17d ago |
| lm78l09f.kicad_sym | 17d ago |
| lm78l09f.lbr | 17d ago |
| lm78l09f.step | 17d ago |
| package.json | 17d ago |
| page.json | 17d ago |
| README.md | 17d ago |
LM78L09F
HTC Korea TAEJIN Tech · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89
LM78L09F from HTC Korea TAEJIN Tech, 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 | VOUT | power_out | Regulated 9 V output of the LM78L09; the datasheet specifies up to 100 mA output current with 8.55 V to 9.45 V over temperature at 1 mA to 70 mA load. |
| 2 | GND | power_in | Ground reference pin for the regulator. |
| 3 | VIN | power_in | Unregulated input voltage; the LM78L09 recommended input range is 11.5 V to 24 V, with an absolute maximum of 30 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HTC Korea TAEJIN Tech |
| 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, 25℃ | VOUT | 8.6 | 9 | 9.4 | V | 25℃; 1mA ≤ Io ≤ 40mA; 12V ≤ VIN ≤ 24V | 7 |
| Output Voltage, -30℃ to 125℃ | VOUT | 8.55 | 9 | 9.45 | V | -30℃ ~ 125℃; 1mA ≤ Io ≤ 40mA; 12V ≤ VIN ≤ 24V | 7 |
| Output Voltage, full load | VOUT | 8.55 | 9 | 9.45 | V | 1mA ≤ Io ≤ 70mA | 7 |
| Line Regulation | ΔVLINE | 45 | 175 | mV | 12V ≤ VIN ≤ 24V; 25℃ | 7 | |
| Line Regulation | ΔVLINE | 40 | 125 | mV | 13V ≤ VIN ≤ 24V | 7 | |
| Load Regulation | ΔVLOAD | 19 | 90 | mV | 1mA ≤ Io ≤ 100mA; 25℃ | 7 | |
| Load Regulation | ΔVLOAD | 11 | 40 | mV | 1mA ≤ Io ≤ 40mA; 25℃ | 7 | |
| Quiescent Bias Current | IB | 4.1 | 6 | mA | 25℃ | 7 | |
| Quiescent Bias Current | IB | 5.5 | mA | 125℃ | 7 | ||
| Bias Current Change | ΔIB | 1.5 | mA | 13V ≤ VIN ≤ 24V; -30℃ ~ 125℃ | 7 | ||
| Bias Current Change | ΔIB | 0.1 | mA | 1mA ≤ Io ≤ 40mA | 7 | ||
| Ripple Rejection | RR | 38 | 45 | dB | 15V ≤ VIN ≤ 25V; f=120Hz; 25℃ | 7 | |
| Output Noise Voltage | VN | 58 | uV | 10Hz ≤ f ≤ 100kHz; 25℃ | 7 | ||
| Dropout Voltage | VD | 1.7 | V | 25℃ | 7 | ||
| Input Voltage (absolute maximum) | VIN | 30 | V | LM78L05 ~ LM78L10 (applies to LM78L09) | 1 | ||
| Lead Temperature (soldering) | TSOL | 260 | ℃ | Soldering, 10 sec | 1 | ||
| Storage Temperature Range | TSTG | -65 | 150 | ℃ | 1 | ||
| Operating Junction Temperature Range | TJOPR | -40 | 150 | ℃ | 1 | ||
| Input Voltage (recommended) | VIN | 11.5 | 24 | V | LM78L09 | 2 | |
| Output Current | Io | 100 | 100 | mA | 2 | ||
| Operating Virtual Junction Temperature | TJ | -40 | 125 | ℃ | 2 |
CAD (KiCad official)
- Symbol:
LM78L09F - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files:
lm78l09f-etched.step/lm78l09f-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm78l09f.step/lm78l09f.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HTC Korea TAEJIN Tech datasheet (12 pp, sha256
7a8ff2d732e5cc65, 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).