component

78L05-A

Public Made by Adom

by adom

DOWO 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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78L05-A

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

78L05-A from DOWO, 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 5 V output that delivers up to 100 mA, with internal thermal overload protection and short-circuit current limiting.
2 GND power_in Ground reference pin for the regulator.
3 IN power_in Unregulated input rated to 35 V absolute maximum, with electrical characteristics specified for input voltages from 7 V to 25 V.

Key specifications

Parameter Value
Manufacturer DOWO
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 (VI=10V, IO=40mA) VO 4.85 5.15 V VI=10V, IO=40mA 2
Output Voltage (IO=1mA to 40mA, VI=7V to 25V) VO 4.8 5.2 V IO=1mA to 40mA, VI=7V to 25V 2
Output Voltage (IO=1mA to 100mA) VO 4.75 5.25 V IO=1mA to 100mA 2
Ripple Rejection RR 47 62 dB VI=8V to 16V, f=100Hz, TJ=25°C 2
Line Regulation △VO 18 75 mV VI=7V to 25V, TJ=25°C 2
Line Regulation △VO 10 54 mV VI=8V to 25V, TJ=25°C 2
Load Regulation △VO 20 60 mV IO=1mA to 100mA, TJ=25°C 2
Load Regulation △VO 5 30 mV IO=1mA to 40 mA, TJ=25°C 2
Quiescent Current IQ 3.75 6 mA 2
Quiescent Current Change △IQ 1 mA VI=8V to 25V 2
Quiescent Current Change △IQ 0.3 mA IO=1mA to 40mA 2
Output Noise Voltage VN 40 μV 10Hz≤f≤100KHz, TJ=25°C 2
Input Voltage VI 35 V 1
Output Current IO 100 mA 1
Junction Temperature TJ 150 °C 1
Storage Temperature Range TSTG -55 150 °C 1

CAD (KiCad official)

  • Symbol: 78L05-A
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89 (KiCad packages3D, STEP)
  • 3D model files: 78l05-a-etched.step / 78l05-a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 78l05-a.step / 78l05-a.glb are the bare package body.

Provenance

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

  • Datasheet: DOWO datasheet (4 pp, sha256 53abddf6a3fd5607, 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