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MC78M09BDTRKG

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by Ray

onsemi Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, DPAK-3. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Datasheet

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Contents

README

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MC78M09BDTRKG

onsemi · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · DPAK-3

MC78M09BDTRKG from onsemi, in a DPAK-3. 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 VIN power_in Unregulated positive input supply. For the 9 V option, VI must be at least ~11.5 V (dropout ~2.0 V typ) and can range up to 25 Vdc for normal operation; absolute max is 35 Vdc.
2 GND power_in Common/ground reference for both input and output. The DPAK heatsink tab (pin 4) is internally connected to this pin.
3 VOUT power_out Regulated 9.0 V output (8.64 V min / 9.45 V max at TJ = 25 C, IO = 350 mA). Rated for 500 mA with adequate heatsinking; internally current-limited to ~350 mA short-circuit.
4 TAB passive Heatsink/thermal tab of the DPAK-3 package. Internally connected to Pin 2 (Ground). Solder to a copper pour for heat dissipation; can be tied to the ground plane.

Key specifications

Parameter Value
Manufacturer onsemi
Package DPAK-3
Category PMIC
Pins 4

Ordering variants

Same part, different packaging or reel option.

  • MC78M09BDTRKG
  • MC78M09BDTRKGBTG

CAD (KiCad official)

  • Symbol: MC78M09BDTRKG
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: DPAK-3 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: onsemi datasheet (14 pp, sha256 6ff0b93f1bfb0373, 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