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LM2596ME-3.3

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by Ray

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

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Datasheet

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Contents

README

markdown

LM2596ME-3.3

HGSEMI · DC-DC Converters · ESOP-8

LM2596ME-3.3 from HGSEMI, in a ESOP-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, 4.5V to 40V (60V on HV variants). A low-ESR bulk capacitor (e.g. 470uF/35V) should be placed close to this pin and GND to suppress input ripple and switching noise.
2 OUTPUT output Emitter of the internal power switch, the switching node that drives the external inductor and catch (Schottky) diode of the buck converter. Delivers up to 3A of load current.
3 GND power_in Circuit ground return. Layout must place this pin's ground path directly to the catch-diode ground return to avoid switching-current noise; on the ESOP-8 package the exposed pad is also GND and provides the primary thermal path.
4 FEEDBACK input Voltage-feedback sense input. On this 3.3V fixed-output variant it connects directly to the output rail; the internal 1.23V reference plus internal divider set VOUT to 3.3V (spec 3.168V-3.432V).
5 ON/OFF input TTL-compatible enable input with hysteresis (VIH1.4V, VIL0.8V). Ground or leave floating (internal pull-down) to enable the regulator; drive high (up to VIN) to shut the chip down (standby current ~80uA).
6 NC unconnected No internal connection. Leave floating or tie to a copper pour for mechanical anchoring; not used electrically.
7 NC unconnected No internal connection. Leave floating or tie to a copper pour for mechanical anchoring; not used electrically.
8 NC unconnected No internal connection. Leave floating or tie to a copper pour for mechanical anchoring; not used electrically.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • LM2596ME-3.3/TR
  • LM2596ME-5.0/TR
  • LM2596ME-12/TR
  • LM2596ME-15/TR
  • LM2596M-3.3/TR
  • LM2596M-5.0/TR
  • LM2596M-12/TR
  • LM2596M-15/TR
  • LM2596DQ4-3.3/TR
  • LM2596DQ4-5.0/TR
  • LM2596DQ4-12/TR
  • LM2596DQ4-15/TR
  • LM2596T-3.3
  • LM2596HVT-3.3
  • LM2596S-3.3/TR
  • LM2596S-5.0/TR
  • LM2596S-12/TR
  • LM2596S-15/TR
  • LM2596HVS-3.3/TR
  • LM2596HVS-5.0/TR
  • LM2596HVS-12/TR
  • LM2596HVS-15/TR
  • LM2596TB-3.3
  • LM2596HVTB-3.3
  • LM2596MD5T-3.3/TR
  • LM2596MD5T-5.0/TR
  • LM2596MD5T-12/TR
  • LM2596MD5T-15/TR
  • LM2596MDT-3.3/TR
  • LM2596MDT-5.0/TR
  • LM2596MDT-12/TR
  • LM2596MDT-15/TR

The extractor listed these alongside LM2596ME-3.3, but they are different parts with different electrical characteristics. Do not order them as substitutes.

  • LM2596ME-ADJ/TR
  • LM2596M-ADJ/TR
  • LM2596DQ4-ADJ/TR
  • LM2596T-ADJ
  • LM2596T-5.0
  • LM2596T-12
  • LM2596T-15
  • LM2596HVT-ADJ
  • LM2596HVT-5.0
  • LM2596HVT-12
  • LM2596HVT-15
  • LM2596S-ADJ/TR
  • LM2596HVS-ADJ/TR
  • LM2596TB-ADJ
  • LM2596TB-5.0
  • LM2596TB-12
  • LM2596TB-15
  • LM2596HVTB-ADJ
  • LM2596HVTB-5.0
  • LM2596HVTB-12
  • LM2596HVTB-15
  • LM2596MD5T-ADJ/TR
  • LM2596MDT-ADJ/TR

CAD (KiCad official)

  • Symbol: LM2596ME-3.3
  • Footprint: Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm
  • 3D model: ESOP-8 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: HGSEMI datasheet (17 pp, sha256 986b3081cc1a4676, 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