component

7905

Public Made by Adom

by adom

YFW Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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7905

YFW · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252

7905 from YFW, in a TO-252. 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 GND power_in Ground reference pin of the 7905 negative regulator.
2 IN power_in Negative input voltage, absolute maximum -30 V; also connected to the tab (pin 2 shown on tab).
3 OUT power_out Regulated -5 V output, output current in excess of 1.5 A with internal current limiting.

Key specifications

Parameter Value
Manufacturer YFW
Package TO-252
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 -4.8 -5 -5.2 V Tj=25°C 2
Output voltage VO -4.75 -5 -5.25 V IO=5mA～1A, PO<15W, VI=-7V～-20V 2
Line regulation ΔVO 100 mV Tj=25°C, VI=-7V～-25V 2
Line regulation ΔVO 50 mV VI=-8V～-12V 2
Load regulation ΔVO 100 mV Tj=25°C, IO=5mA～1.5A 2
Load regulation ΔVO 50 mV IO=0.25A～0.75A 2
Quiescent current IQ 6 mA Tj=25°C 2
Quiescent current change ΔIQ 0.5 mA IO=5mA～1.5A 2
Quiescent current change ΔIQ 0.8 mA VI=-8～-25V 2
Output voltage drift △V/△T -0.4 mV/°C IO=5mA 2
Output noise voltage VN 40 μV f=10HZ～100KHZ 2
Ripple rejection RR 60 dB f=120Hz, ΔVI=10V 2
Dropout voltage VD 2 V Tj=25°C, IO=1.5A 2
Short circuit current ISC 300 mA Tj=25, VI=-30V 2
Peak current IPK 2.2 A Tj=25°C 2
Input voltage VIN -30 V 1
Output voltage VO -5 V 1
Operating junction temperature range Tj 0 125 °C 1
Storage temperature range Tstg -65 150 °C 1
Thermal resistance junction-air RθJA 65 °C/W 1
Thermal resistance junction-case RθJC 5 °C/W 1

CAD (KiCad official)

  • Symbol: 7905
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252 (KiCad packages3D, STEP)
  • 3D model files: 7905-etched.step / 7905-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 7905.step / 7905.glb are the bare package body.

Provenance

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

  • Datasheet: YFW datasheet (3 pp, sha256 a7fc4cfb04e18951, 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