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LM2596S-5.0-MS

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MSKSEMI DC-DC Converters, TO-263-5L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LM2596S-5.0-MS

MSKSEMI · DC-DC Converters · TO-263-5L

LM2596S-5.0-MS from MSKSEMI, in a TO-263-5L. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 Vin power_in Positive input supply for the switching regulator, which must be bypassed near the pin; the operating supply voltage is up to 40V for LM2596 (57V for LM2596HV).
2 Output output Internal switch output that swings between (Vin − VSAT) and approximately −0.5V at a duty cycle of about VOUT/VIN, so the copper area connected to it should be kept minimal to limit coupling.
3 Gnd power_in Circuit ground for the regulator.
4 Feedback input Senses the regulated output voltage to close the feedback loop; for the adjustable version, the feedback resistors should be placed close to the IC.
5 ON/OFF input Shutdown control: pulling below approximately 1.3V turns the regulator on and pulling above 1.3V (maximum 25V, absolute max −0.3V to +25V) shuts it down, with the pin left open or tied to ground giving the ON condition.
6 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer MSKSEMI
Package TO-263-5L
Category Power Management (PMIC)
Pins 6

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Output Voltage (LM2596-5.0, TJ 25°C standard; full-temp limits used) VOUT 4.75 5 5.25 V 7V ≤ VIN ≤ 40V, 0.2A ≤ ILOAD ≤ 3A 4
Oscillator Frequency fO 110 150 173 kHz (Note 6) 5
Saturation Voltage VSAT 1.16 1.5 V IOUT = 3A (Notes 7, 8) 5
Current Limit Peak Current ICL 3.4 4.5 7.5 A Peak Current (Notes 7, 8) 5
Output Leakage Current IL 50 µA Output = 0V (Notes 7, 9) 5
Output Leakage Current IL 2 30 mA Output = −1V (Note 10) 5
Quiescent Current IQ 5 10 mA (Note 9) 5
Standby Quiescent Current ISTBY 80 250 µA ON/OFF pin = 5V (OFF) (Note 10) 5
ON/OFF Pin Logic Input Threshold Voltage Low (Regulator ON) VIH 1.3 0.6 V 5
ON/OFF Pin Logic Input High (Regulator OFF) VIL 2 V 5
ON/OFF Pin Input Current (Regulator OFF) IH 5 15 µA VLOGIC = 2.5V (Regulator OFF) 6
ON/OFF Pin Input Current (Regulator ON) IL 0.02 5 µA VLOGIC = 0.5V (Regulator ON) 6
Maximum Supply Voltage (LM2596, non-HV) 45 V LM2596 (non-HV) 3
ON/OFF Pin Input Voltage -0.3 25 V 3
Feedback Pin Voltage -0.3 25 V 3
Output Voltage to Ground (Steady State) -1 V Steady state 3
Storage Temperature Range -65 150 ˚C 3
Lead Temperature, Vapor Phase 215 ˚C 60 sec. 3
Lead Temperature, Infrared 245 ˚C 10 sec. 3
Maximum Junction Temperature 150 ˚C 3
Operating Temperature Range (TJ) TJ -40 125 ˚C 3
Supply Voltage (LM2596) 40 V LM2596 (non-HV) 3
Thermal Resistance, Junction to Case (TO-220 or TO-263 Package) JC 2 ˚C/W 5

CAD (KiCad official)

  • Symbol: LM2596S-5.0-MS
  • Footprint: Package_TO_SOT_SMD:TO-263-5_TabPin6
  • 3D model: TO-263-5L (KiCad packages3D, STEP)
  • 3D model files: lm2596s-5-0-ms-etched.step / lm2596s-5-0-ms-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm2596s-5-0-ms.step / lm2596s-5-0-ms.glb are the bare package body.

Provenance

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

  • Datasheet: MSKSEMI datasheet (19 pp, sha256 0157580195f9795e, retrieved 2026-10-17, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF