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LM2596S-5.0

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by adom

HGSEMI DC-DC Converters, TO-263-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs lm2596s-5-0: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain ST… · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
lm2596s-5-0-etched.fit.json lm2596s-5-0: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
lm2596s-5-0-etched.glb lm2596s-5-0: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain ST… · Ray
lm2596s-5-0-etched.step lm2596s-5-0: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain ST… · Ray
lm2596s-5-0.glb fix footprint: TO-263-2 -> TO-263-5_TabPin6 (pad_count, 5 pins) · Ray
lm2596s-5-0.kicad_mod fix footprint: TO-263-2 -> TO-263-5_TabPin6 (pad_count, 5 pins) · Ray
lm2596s-5-0.kicad_sym add symbol pin "6" for the exposed thermal pad: the footprint carries the pad and the symbol had none, so it reached no… · Ray
lm2596s-5-0.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
lm2596s-5-0.step fix footprint: TO-263-2 -> TO-263-5_TabPin6 (pad_count, 5 pins) · Ray
package.json Publish 0.2.0 · Ray
pads.json add symbol pin "6" for the exposed thermal pad: the footprint carries the pad and the symbol had none, so it reached no… · Ray
page.json lm2596s-5-0: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain ST… · Ray
README.md lm2596s-5-0: specified limits as data (metadata.characteristics, 30 rows from the datasheet) · Ray

LM2596S-5.0

HGSEMI · DC-DC Converters · TO-263-5

LM2596S-5.0 from HGSEMI, 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 Unregulated DC input supply. Operating range 4.75V to 40V (LM2596) / 4.75V to 60V (LM2596HV); absolute max 45V / 63V. Bypass close to pin with a low-ESR input capacitor (typ. 680 uF).
2 Output output Switching output node of the internal power switch. Connects to the external catch diode (e.g. 1N5824 Schottky) cathode and to the output inductor (typ. 33 uH). Rated 3A continuous load current; do not exceed -1V below ground in steady state.
3 GND power_in Device ground reference. Tie directly to the system ground plane; carries return current for both control and power stages.
4 Feedback input Output voltage feedback sense pin. For the fixed 5.0V version this pin ties directly to the regulated output; internal divider sets Vout = 5V. Absolute max -0.3V to +25V.
5 ON/OFF input Active-low TTL-compatible shutdown. Regulator is enabled when this pin is Low or left floating; pulled High (up to +25V) forces low-power standby (IQ ~ 80 uA typ.). Absolute max -0.3V to +25V.

Key specifications

Parameter Value
Manufacturer HGSEMI
Package TO-263-5
Category PMIC
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • LM2596S-5.0
  • LM2596HVS-5.0
  • LM2596T-5.0
  • LM2596HVT-5.0

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, LM2596S-5.0 (TJ=25°C) VOUT 4.8 5 5.2 V VIN=12V, ILOAD=3A; TJ=25°C 5
Output voltage, LM2596S-5.0 (full operating temperature range) VOUT 4.75 5 5.25 V VIN=12V, ILOAD=3A; full operating temperature range 5
Oscillator frequency fO 117 150 183 kHz 6
Current limit (TJ=25°C) ICL 3.6 4.5 6.9 A Peak Current (Notes 7, 8) 6
Current limit (full operating temperature range) ICL 3.4 4.5 7.5 A Peak Current (Notes 7, 8) 6
Saturation voltage (TJ=25°C) VSAT 1.16 1.4 V IOUT=3A (Notes 7, 8) 6
Saturation voltage (full operating temperature range) VSAT 1.16 1.5 V IOUT=3A (Notes 7, 8) 6
Quiescent current IQ 5 10 mA (Note 9) 6
Standby quiescent current (TJ=25°C) ISTBY 80 200 µA ON/OFF pin=5V (OFF) 6
Standby quiescent current (full operating temperature range) ISTBY 80 250 µA ON/OFF pin=5V (OFF) 6
ON/OFF pin logic input threshold voltage, low (regulator ON) VIL 1.3 0.6 V Low (Regulator ON) 7
ON/OFF pin logic input threshold voltage, high (regulator OFF) VIH 2 V High (Regulator OFF) 7
ON/OFF pin input current, high (regulator OFF) IH 5 15 µA VLOGIC=2.5V (Regulator OFF) 7
ON/OFF pin input current, low (regulator ON) IL 0.02 5 µA VLOGIC=0.5V (Regulator ON) 7
Maximum supply voltage (LM2596) 45 V 4
ON/OFF pin input voltage -0.3 25 V 4
Feedback pin voltage -0.3 25 V 4
Output voltage to ground (steady state) -1 V Steady state 4
Storage temperature range -65 150 °C 4
ESD susceptibility, human body model 2 kV Human body model 4
Soldering, vapor phase (60 s) 215 °C 60 sec. 4
Soldering, infrared (10 s) 245 °C 10 sec. 4
Soldering, T package (10 s) 260 °C 10 sec. 4
Maximum junction temperature 150 °C 4
Operating junction temperature range TJ -40 125 °C 4
Supply voltage (LM2596) VIN 4.75 40 V 4
Thermal resistance, junction to case (TO-263) θJC 2 °C/W TO-220 or TO-263 Package, Junction to Case 7
Thermal resistance, junction to ambient, TO-263 (0.5 in² copper) θJA 50 °C/W TO-263, junction to ambient, single PCB, 0.5 in² 1 oz copper (Note 12) 7
Thermal resistance, junction to ambient, TO-263 (2.5 in² copper) θJA 30 °C/W TO-263, junction to ambient, single sided PCB, 2.5 in² 1 oz copper (Note 13) 7
Thermal resistance, junction to ambient, TO-263 (3 in² copper, double sided) θJA 20 °C/W TO-263, junction to ambient, double sided PCB, 3 in² 1 oz copper on LM2596S side (Note 14) 7

CAD (KiCad official)

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

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
lm2596s-5-0.step 180 KB You want the bare part, or you mark your own boards.
lm2596s-5-0-etched.step 2.2 MB You want the part with LM2596S-5.0 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 573 faces against 135 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: HGSEMI datasheet (28 pp, sha256 26d031e9696524e9, 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