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LM78L09

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HTC Korea TAEJIN Tech Linear Voltage Regulators (LDO), TO-92-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management icslm78l09factory-2.0.0extractor-text

Verified LM78L09

by Ray · last 5 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

5 Nov 2026RayPublished by the parts factory: tier lcsc, 3 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: LM78L09 · TO-92-3 · 3 pins
  • ✓copper: 3 copper pads, none touching another net
  • ✓datasheet: all 3 pin names found in the 11-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: TO-92_Inline
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-slmtrr48/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 3 pins = 3 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 3 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ lm78l09.kicad_sym✓ lm78l09.kicad_mod✓ lm78l09.step
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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 2d ago
viewers lm78l09: viewers · Ray 2d ago
lm78l09-etched.glb Publish 0.1.0 · Ray 2d ago
lm78l09-etched.step lm78l09: factory component page (tier=lcsc) · Ray 2d ago
lm78l09-hero.glb lm78l09: hero GLB from the etched model (keeps the MPN mark) · Ray 2d ago
lm78l09-hero.overlay.json Publish 0.1.0 · Ray 2d ago
lm78l09.glb Publish 0.1.0 · Ray 2d ago
lm78l09.kicad_mod Publish 0.1.0 · Ray 2d ago
lm78l09.kicad_sym Publish 0.1.0 · Ray 2d ago
lm78l09.lbr Publish 0.1.0 · Ray 2d ago
lm78l09.step Publish 0.1.0 · Ray 2d ago
package.json Publish 0.1.0 · Ray 2d ago
page.json Set visibility: public · Ray 2d ago
README.md Publish 0.1.0 · Ray 2d ago
verification.json Verified: Published by the parts factory: tier lcsc, 3 pins · Ray 2d ago

LM78L09

HTC Korea TAEJIN Tech · Linear Voltage Regulators (LDO) · TO-92-3

LM78L09 from HTC Korea TAEJIN Tech, in a TO-92-3. 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 VOUT power_out Regulated 9V output of the LM78L09, delivering up to 100mA of output current.
2 GND power_in Ground reference for input and output; bypass capacitors should be placed as close to the regulator as possible.
3 VIN power_in Unregulated input voltage, recommended 11.5V to 24V for the LM78L09 with an absolute maximum input of 30V for the LM78L05 to LM78L10 group.

Key specifications

Parameter Value
Manufacturer HTC Korea TAEJIN Tech
Package TO-92-3
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
Output Voltage (25 °C) VOUT 8.6 9 9.4 V 25℃; 1mA ≤ Io ≤ 40mA; 12V ≤ VIN ≤ 24V 7
Output Voltage (over temperature) VOUT 8.55 9 9.45 V -30℃ ~ 125℃; 1mA ≤ Io ≤ 70mA; 12V ≤ VIN ≤ 24V 7
Line Regulation ΔVLINE 45 175 mV 12V ≤ VIN ≤ 24V 7
Line Regulation ΔVLINE 40 125 mV 13V ≤ VIN ≤ 24V; 25℃ 7
Load Regulation ΔVLOAD 19 90 mV 1mA ≤ Io ≤ 100mA 7
Load Regulation ΔVLOAD 11 40 mV 1mA ≤ Io ≤ 40mA; 25℃ 7
Bias Current (25 °C) IB 4.1 6 mA 25℃ 7
Bias Current (125 °C) IB 5.5 mA 125℃ 7
Bias Current Change ΔIB 1.5 mA 13V ≤ VIN ≤ 24V 7
Bias Current Change ΔIB 0.1 mA 1mA ≤ Io ≤ 40mA; -30℃ ~ 125℃ 7
Output Noise Voltage VN 58 uV 10Hz ≤ f ≤ 100kHz; 25℃ 7
Ripple Rejection RR 38 45 dB 15V ≤ VIN ≤ 25V, f=120Hz; 25℃ 7
Dropout Voltage VD 1.7 V 25℃ 7
Input Voltage (absolute maximum, LM78L05 ~ LM78L10) VIN 30 V LM78L05 ~ LM78L10 family rating 1
Maximum Power Dissipation PDMax 0.77 W TA = 25°C, TO-92 1
Thermal Resistance Junction-To-Ambient θJA 162 ℃/W TO-92 1
Lead Temperature (Soldering) TSOL 260 ℃ 10 sec 1
Storage Temperature Range TSTG -65 150 ℃ 1
Operating Junction Temperature Range (absolute maximum) 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: LM78L09
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92-3 (KiCad packages3D, STEP)
  • 3D model files: lm78l09-etched.step / lm78l09-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm78l09.step / lm78l09.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: HTC Korea TAEJIN Tech datasheet (11 pp, sha256 b5b1ed6d19d1619d, retrieved 2026-11-05, 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