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BL78L12

Public Made by Adom

by adom

GME(银河微电) Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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BL78L12

GME(银河微电) · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89

BL78L12 from GME(银河微电), in a SOT-89. 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 VO power_out Regulated 12 V output (11.5 V to 12.5 V at Tj=25°C), with 100 mA maximum output current and 0.1 µF output capacitor shown in the application circuit.
2 GND power_in Ground reference pin common to input and output, connected to both capacitors' return in the application circuit.
3 VI power_in Unregulated input voltage, rated up to 35 V maximum for the 78L10-78L15 range, with 0.33 µF input capacitor shown in the application circuit.

Key specifications

Parameter Value
Manufacturer GME(银河微电)
Package SOT-89
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℃ VO 11.5 12 12.5 V Tj=25℃ 6
Output voltage, line/load variant VO 11.4 12.6 V Vi=14.5V-27V, IO=1mA-40mA 6
Output voltage, Vi=19V VO 11.4 12.6 V Vi=19V, IO=1mA-70mA 6
Load regulation Regload 20 100 mV Tj=25℃, IO=1mA-100mA 6
Load regulation Regload 10 50 mV Tj=25℃, IO=1mA-40mA 6
Line regulation Regline 120 250 mV 14.5V≤Vi≤27V, Tj=25℃ 6
Line regulation Regline 100 200 mV 16V≤Vi≤27V, Tj=25℃ 6
Input bias current IIB 4.2 6.5 mA Tj=25℃ 6
Input bias current IIB 6 mA Tj=125℃ 6
Input bias current change △IIB 1.5 mA 16V≤Vi≤27V 6
Input bias current change △IIB 0.1 mA 1mA≤IO≤40mA 6
Ripple rejection RR 37 42 dB IO=40mA, 15V≤Vi≤25V, f=120Hz, Tj=25℃ 6
Input voltage (78L10-78L15 group) VI 35 V Input voltage (78L10-78L15) 1
Maximum output current ICM 100 mA 1
Power dissipation PD 500 mW TA = 25C 1
Operating temperature range TOPR -40 125 °C 1
Junction temperature TJ 150 °C 1
Storage temperature range TSTG -65 150 °C 1
Thermal resistance junction-to-air RθJA 250 °C/W 1
Output noise voltage VN 80 μV 10Hz≤f≤100KHz, TA=25℃ 6
Dropout voltage VI-VO 1.7 V Tj=25℃ 6

CAD (KiCad official)

  • Symbol: BL78L12
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89 (KiCad packages3D, STEP)
  • 3D model files: bl78l12-etched.step / bl78l12-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bl78l12.step / bl78l12.glb are the bare package body.

Provenance

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

  • Datasheet: GME(银河微电) datasheet (9 pp, sha256 a5d9bd6ac6d442fe, retrieved 2026-10-17, 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