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78l08g-ab3-r

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UTC Unisonic Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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78L08G-AB3-R

UTC Unisonic Tech · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89

78L08G-AB3-R from UTC Unisonic Tech, in a SOT-89. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 OUT power_out Regulated output voltage pin. Provides fixed +8.0V nominal output (7.68V typ, 7.60V-8.40V over line/load range) at up to 100mA. Requires a 0.1μF bypass capacitor to GND for stability and transient response, placed close to the pin.
2 GND power_in Ground reference pin (0V). Common return for both the input capacitor and the output capacitor. For SOT-89, this pin is the center lead and is thermally/electrically bonded to the tab.
3 IN power_in Unregulated input supply pin. Accepts up to 35V absolute maximum; recommended VIN range for 78L08 is 10.5V-23V. Requires a 0.33μF bypass capacitor to GND for stability, placed close to the pin.

Key specifications

Parameter Value
Manufacturer UTC Unisonic Tech
Package SOT-89
Category PMIC
Pins 3

Ordering variants

  • 78L08G-AB3-R
  • 78L08G-AB3-R78L08G-AB3-C-R
  • 78L08G-AB3-R78L08G-AF5-R
  • 78L08G-AB3-R78L08G-S08-R
  • 78L08G-AB3-R78L08G-T92-B
  • 78L08G-AB3-R78L08G-T92-K
  • 78L08G-AB3-R78L08L-T92-B
  • 78L08G-AB3-R78L08L-T92-K
  • 78L08G-AB3-R78L08G-T9N-B
  • 78L08G-AB3-R78L08G-T9N-K
  • 78L08G-AB3-R78L08L-T9N-B
  • 78L08G-AB3-R78L08L-T9N-K

CAD (KiCad official)

  • Symbol: 78L08G-AB3-R
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: UTC Unisonic Tech datasheet (None pp, sha256 019cf0ff8e450efc, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF

Symbol & Footprint

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PCB Footprint

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Datasheet

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