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LM78L09F

Public Made by Adom

by 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.

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Contents

README

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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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm78l09f.step / lm78l09f.glb are 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, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF