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AP1509-12M

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by Ray

HGSEMI DC-DC Converters, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

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AP1509-12M

HGSEMI · DC-DC Converters · SOP-8

AP1509-12M from HGSEMI, in a SOP-8. 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 Supply Voltage Input Pin. Operates from 4.5V to 42V DC. Bypass VIN to GND with a suitably large capacitor to eliminate input noise.
2 OUTPUT output Power Switch Output Pin (SW). Switch node that supplies power to the external inductor/Schottky-diode/output-capacitor network. Rated to source up to 2A.
3 FEEDBACK input Feedback Pin (FB). Senses the output voltage through an external resistor divider and regulates it. Internal feedback threshold voltage is 1.23V (fixed 12V version internally sets divider for 12V output).
4 ON/OFF input Enable Pin. Drive ON/OFF low (<0.8V) to turn on the device; drive high (>1.4V) to turn it off. Floating defaults low (regulator ON). Input leakage 0.2-10 uA (ON), 5-30 uA (OFF).
5 GND power_in Ground Pin. Care must be taken in layout. This pin should be placed outside of the Schottky diode to output-capacitor ground path to prevent switching current spikes from inducing voltage noise into AP1509.
6 GND power_in Ground Pin. Care must be taken in layout. This pin should be placed outside of the Schottky diode to output-capacitor ground path to prevent switching current spikes from inducing voltage noise into AP1509.
7 GND power_in Ground Pin. Care must be taken in layout. This pin should be placed outside of the Schottky diode to output-capacitor ground path to prevent switching current spikes from inducing voltage noise into AP1509.
8 GND power_in Ground Pin. Care must be taken in layout. This pin should be placed outside of the Schottky diode to output-capacitor ground path to prevent switching current spikes from inducing voltage noise into AP1509.

Key specifications

Parameter Value
Manufacturer HGSEMI
Package SOP-8
Category PMIC
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • AP1509-12M/TR
  • AP1509-12ME/TR

CAD (KiCad official)

  • Symbol: AP1509-12M
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: HGSEMI datasheet (13 pp, sha256 8479d2479ebaa956, retrieved 2026-08-17, tier: lcsc)
  • 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