component

LM7908CT

Public Made by Adom

by adom

HGSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LM7908CT

HGSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-220-3

LM7908CT from HGSEMI, in a TO-220-3. 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 GND power_in Ground reference pin of the LM7908C regulator, shown as the lowest lead in the TO-220-3 drawing next to the pin-1 marker.
2 INPUT power_in Negative input voltage pin; the LM7908C is specified for VIN of -10.5V to -23V for regulation, with a -35V maximum input voltage at TJ=25°C.
3 OUTPUT power_out Regulated -8V output (-7.68V to -8.32V) delivering up to 1.0A in the output-voltage spec, with output current in excess of 1.5A.

Key specifications

Parameter Value
Manufacturer HGSEMI
Package TO-220-3
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 -7.68 -8.32 V -10.5V ≤ VIN ≤ -23V; 5.0mA ≤ IO ≤ 1.0 A 3
Line Regulation ∆UV 76 mV IO = 100mA, -10.5V ≤ VIN ≤ -25V 3
Line Regulation ∆UV 38 mV IO = 100mA, -11V ≤ VIN ≤ -17V 3
Line Regulation ∆UV 152 mV IO = 500mA, -10.5V ≤ VIN ≤ -25V 3
Load Regulation ∆UI 152 mV 5.0mA ≤ IO ≤ 1.5 A 3
Load Regulation ∆UI 76 mV 250mA ≤ IO ≤ 750mA 3
Quiescent Current IB 7.8 mA 3
Quiescent Current Change ∆IB 0.98 mA -10.5V ≤ VIN ≤ -25V 3
Quiescent Current Change ∆IB 0.48 mA 5.0mA ≤ IO ≤ 1.5 A 3
Maximum input voltage -35 V at TJ=25°C 2
Maximum operating junction temperature 125 °C 2
Lead Temperature (TL) 245 °C Soldering, 10 seconds 2
Operating Temperature Range 0 125 °C 2

CAD (KiCad official)

  • Symbol: LM7908CT
  • Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
  • 3D model: TO-220-3 (KiCad packages3D, STEP)
  • 3D model files: lm7908ct-etched.step / lm7908ct-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm7908ct.step / lm7908ct.glb are the bare package body.

Provenance

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

  • Datasheet: HGSEMI datasheet (10 pp, sha256 c70f3a4452f8948a, retrieved 2026-11-05, 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