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LM2596S-ADJ P+-JSM

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by Ray

JSMSEMI LM2596S ADJ P DC-DC Converters, TO-263-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Datasheet

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Contents

README

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LM2596S-ADJ P+-JSM

JSMSEMI LM2596S ADJ P · DC-DC Converters · TO-263-5

LM2596S-ADJ P+-JSM from JSMSEMI LM2596S ADJ P, in a TO-263-5. 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. Requires a 4.5V-40V DC source (up to 60V on the HV variant). A large-value bypass capacitor should be placed between VIN and GND to suppress supply noise.
2 OUTPUT output Power switch output pin. This is the switching node from the internal power transistor and drives the external inductor/catch-diode network to deliver the regulated output to the load. Rated up to 3A output current.
3 GND power_in Ground reference pin. Layout should keep this pin's return path off the catch-diode/output-capacitor loop to prevent switching-current spikes from coupling noise into the output. Metal tab is also connected to GND.
4 FEEDBACK input Voltage feedback input. Monitors the output voltage through an external resistor divider network; the internal feedback reference threshold is 1.23V for output-voltage regulation.
5 ON_OFF input Enable/shutdown control pin. A logic-low (<0.8V) enables the regulator; a logic-high (>1.4V) disables (shuts down) the chip. Internally defaults to low when left floating, so the chip is enabled by default.

Key specifications

Parameter Value
Manufacturer JSMSEMI LM2596S ADJ P
Package TO-263-5
Category PMIC
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • LM2596S-ADJ/TR

The extractor listed these alongside LM2596S-ADJ P+-JSM, but they are different parts with different electrical characteristics. Do not order them as substitutes.

  • LM2596HVS-ADJ/TR
  • LM2596T-ADJ
  • LM2596HVT-ADJ
  • LM2596MDT-ADJ/TR

CAD (KiCad official)

  • Symbol: LM2596S-ADJ P+-JSM
  • Footprint: Package_TO_SOT_SMD:TO-263-5_TabPin6
  • 3D model: TO-263-5 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: JSMSEMI LM2596S ADJ P datasheet (12 pp, sha256 7e398bb340683438, 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