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78M08AS-R

Public Made by Adom

by adom

YFW Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-263. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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78M08AS-R

YFW · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-263

78M08AS-R from YFW, in a TO-263. 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 IN power_in Unregulated input voltage pin, absolute maximum 30 V, with 0.33 µF input capacitor used in the test circuits.
2 GND power_in Ground reference pin common to input and output (tab is also marked 2 on the package drawing).
3 OUT power_out Regulated 8 V output (7.68 to 8.32 V at 25°C) delivering up to 1.0 A, with 0.1 µF output capacitor used in the test circuits.

Key specifications

Parameter Value
Manufacturer YFW
Package TO-263
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 (TJ = +25°C) VO 7.68 8 8.32 V TJ = +25°C 2
Output Voltage (IO = 5mA1A, VI = 10.523V) VO 7.6 8 8.4 V IO = 5mA1A, VI = 10.523V 2
Line Regulation △VO 160 mV TJ=25°C, VI=10.5V~25V 2
Line Regulation △VO 80 mV TJ=25°C, VI=11.5V~17V 2
Load Regulation △VO 200 mV TJ=25°C, IO=5mA~1.0A 2
Load Regulation △VO 100 mV TJ=25°C, IO=250mA~750mA 2
Input Voltage VIN 30 V 1
Output Voltage (absolute maximum table entry) VO 8 V 1
Operating Temperature Range TOPR 0 125 °C 1
Storage Temperature Range TSTG -55 150 °C 1
Quiescent Current IQ 8 mA Tj=25°C 2
Quiescent Current Change △IQ 0.5 mA IO=5mA~1.0A 2
Quiescent Current Change △IQ 1 mA VI=10.5~25V 2
Output Voltage Drift △V /△T -0.8 mV/°C IO = 5mA 2
Output Noise Voltage VN 52 μV f=10HZ~100KHZ 2
Ripple Rejection RR 80 dB f = 120Hz, VI = 11.5~21.5V 2
Dropout Voltage VD 2 V IO = 1A, TJ=25°C 2
Short Circuit Current ISC 230 mA VI= 35V, TJ=25°C 2
Peak Current IPK 1.6 A TJ=25°C 2

CAD (KiCad official)

  • Symbol: 78M08AS-R
  • Footprint: Package_TO_SOT_SMD:TO-263-2
  • 3D model: TO-263 (KiCad packages3D, STEP)
  • 3D model files: 78m08as-r-etched.step / 78m08as-r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 78m08as-r.step / 78m08as-r.glb are the bare package body.

Provenance

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

  • Datasheet: YFW datasheet (5 pp, sha256 8c3c6f74aa293f09, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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