component
LM7908CT
Public Made by Adomby 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.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLM7908CT
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm7908ct.step/lm7908ct.glbare 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, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).