component

78L18K

Public Made by Adom

by adom

Shikues 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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78L18K

Shikues · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89

78L18K from Shikues, 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 OUT power_out Regulated output terminal, rated for up to 100 mA output current (IOUT 100 mA maximum).
2 GND power_in Ground (common) terminal of the regulator.
3 IN power_in Unregulated input terminal; maximum input voltage is 30 V for VOUT 4.4 to 10 V and 35 V for VOUT 12 to 18 V.

Key specifications

Parameter Value
Manufacturer Shikues
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 VO 17.3 18 18.7 V Tj=25C 5
Output Voltage VO 17.1 18.9 V 20V≤VI≤33V, IO=1mA~40mA 5
Load Regulation Vo 27 180 mV Tj=25C, IO=1mA~100mA 5
Load Regulation Vo 19 90 mV Tj=25C, IO=1mA~40mA 5
Line Regulation Vo 70 360 mV 20.5V≤VI≤33V, Tj=25C 5
Line Regulation Vo 64 300 mV 22V≤VI≤33V, Tj=25C 5
Quiescent Current Iq 4.7 6.5 mA Tj=25C 5
Quiescent Current Change Iq 1.5 mA 22V≤VI≤33V 5
Quiescent Current Change Iq 0.1 mA 1mA≤IO≤40mA 5
Output Noise Voltage VN 90 V 10Hz≤f≤100kHz, Tj=25C 5
Temperature Coefficient of Vo Vo/T 1.3 mV/C Io=5mA 5
Ripple Rejection RR 32 36 dB 21.5V≤VI≤31.5V, f=120Hz, Tj=25C 5
Dropout Voltage Vd 1.7 V 5
Input Voltage VIN 35 V VOUT=12~18V 1
Output Current IOUT 100 mA 1
Junction Temperature TJ 125 C 1
Operating Temperature TOPR -40 125 C 1
Storage Temperature Range TSTG -40 150 C 1

CAD (KiCad official)

  • Symbol: 78L18K
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89 (KiCad packages3D, STEP)
  • 3D model files: 78l18k-etched.step / 78l18k-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 78l18k.step / 78l18k.glb are the bare package body.

Provenance

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

  • Datasheet: Shikues datasheet (7 pp, sha256 b86034afba8c5da7, 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