component

LM2576M-12

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by Ray

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

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Datasheet

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Contents

README

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LM2576M-12

HGSEMI · DC-DC Converters · SOP-8

LM2576M-12 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 Unregulated DC input supply. Operating range 7V to 40V (LM2576) up to 60V (LM2576HV). Bypass with a low-ESR input capacitor (C_IN ~100 uF) close to the pin.
2 Output output Switching output from the internal 3A NPN power switch. Connects to the catch diode (e.g. 1N5822) cathode, the inductor (L1 ~100 uH) and the output filter capacitor.
3 Feedback input Feedback sense input to the internal error amplifier. For the LM2576-12 fixed variant this pin is tied directly to the regulated +12V output; the internal divider (R2 = 8.84k, R1 = 1.0k) sets the 12V output against the 1.23V bandgap reference.
4 ON/OFF input Active-low TTL-compatible shutdown input. Logic low (or grounded) enables normal regulation; logic high (up to +V_IN, min 0.3V below V_IN) puts the device into low-power standby (~50 uA typ). V_ON_OFF absolute range -0.3V to +V_IN.
5 GND power_in Device ground. Pins 5-8 are internally tied together and also serve as the thermal path; connect all four to the ground plane / thermal copper pour.
6 GND power_in Device ground / thermal pin. Tie to pins 5, 7, 8 and the PCB ground plane for proper thermal dissipation.
7 GND power_in Device ground / thermal pin. Tie to pins 5, 6, 8 and the PCB ground plane for proper thermal dissipation.
8 GND power_in Device ground / thermal pin. Tie to pins 5, 6, 7 and the PCB ground plane for proper thermal dissipation.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • LM2576M-12/TR
  • LM2576ME-12/TR
  • LM2576DQ4-12/TR
  • LM2576T-12
  • LM2576HVT-12
  • LM2576S-12/TR
  • LM2576HVS-12/TR
  • LM2576TB-12

CAD (KiCad official)

  • Symbol: LM2576M-12
  • 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 (14 pp, sha256 eddc94f04fe787be, retrieved 2026-08-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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