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LM2576S-5.0

Public Made by Adom

by adom

HGSEMI LM2576S 5 0 TR 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 lm2576s-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
lm2576s-5-0-etched.fit.json lm2576s-5-0: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
lm2576s-5-0-etched.glb lm2576s-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
lm2576s-5-0-etched.step lm2576s-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
lm2576s-5-0.glb fix footprint: TO-263-2 -> TO-263-5_TabPin6 (pad_count, 5 pins) · Ray
lm2576s-5-0.kicad_mod fix footprint: TO-263-2 -> TO-263-5_TabPin6 (pad_count, 5 pins) · Ray
lm2576s-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
lm2576s-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
lm2576s-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 lm2576s-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 lm2576s-5-0: specified limits as data (metadata.characteristics, 26 rows from the datasheet) · Ray

LM2576S-5.0

HGSEMI · DC-DC Converters · TO-263-5

LM2576S-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 Input supply voltage. Operating range 4.5V to 40V for LM2576 (up to 60V for LM2576HV). Absolute maximum 45V (63V HV). Bypass with a suitable input capacitor close to this pin.
2 Output output Switching output from the internal 3A power switch. Connects to the external catch diode (e.g. 1N5822) and the smoothing inductor (typ. 100µH). Steady-state output voltage may swing down to -1V relative to GND.
3 GND power_in Device ground reference for the internal regulator, oscillator, error amplifier, and power switch return.
4 Feedback input Output voltage feedback input to the internal error amplifier. On fixed-voltage versions (like the -5.0), tie directly to the regulated output node so the internal divider senses VOUT (internal 1.23V band-gap reference).
5 ON/OFF input TTL-compatible active-low shutdown input. Low or floating enables the regulator; drive high to enter low-power standby mode (~50µA typ). Input range -0.3V to +VIN.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • LM2576S-5.0S
  • LM2576S-5.0T

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 (LM2576 5.0 version, VIN=12V, ILOAD=0.5A) VOUT 4.9 5 5.1 V VIN=12V, ILOAD=0.5A; Circuit of Figure 2 5
Output Voltage (LM2576 5.0 version, TJ=25°C) VOUT 4.8 5 5.2 V 8V≤VIN≤40V, 0.5A≤ILOAD≤3A; Circuit of Figure 2 5
Output Voltage (LM2576 5.0 version, full operating temperature range) VOUT 4.75 5 5.25 V 8V≤VIN≤40V, 0.5A≤ILOAD≤3A; Circuit of Figure 2 5
Oscillator Frequency (TJ=25°C) fO 47 52 58 kHz VIN=12V, ILOAD=500mA (table default) 8
Oscillator Frequency (full operating temperature range) fO 42 52 63 kHz VIN=12V, ILOAD=500mA (table default) 8
Saturation Voltage (TJ=25°C) VSAT 1.4 1.8 V IOUT=3A (Note 4) 8
Saturation Voltage (full operating temperature range) VSAT 1.4 2 V IOUT=3A (Note 4) 8
Max Duty Cycle (ON) DC 93 98 % VIN=12V, ILOAD=500mA (table default) 8
Current Limit (TJ=25°C) ICL 4.2 5.8 6.9 A 8
Current Limit (full operating temperature range) ICL 3.5 5.8 7.5 A 8
Standby Quiescent Current ISTBY 50 200 µA ON/OFF pin=5V (OFF) 8
ON/OFF Pin Logic Input High Level (TJ=25°C) VIH 2.2 1.4 V VOUT=0V 9
ON/OFF Pin Logic Input High Level (full operating temperature range) VIH 2.4 1.4 V VOUT=0V 9
ON/OFF Pin Logic Input Low Level (TJ=25°C) VIL 1.2 1 V VOUT=Nominal Output Voltage 9
ON/OFF Pin Logic Input Low Level (full operating temperature range) VIL 1.2 0.8 V VOUT=Nominal Output Voltage 9
ON/OFF Pin Input Current (high, OFF) IIH 12 30 µA ON/OFF Pin=5V(OFF) 9
ON/OFF Pin Input Current (low, ON) IIL 0 10 µA ON/OFF Pin=0V(ON) 9
Operating Temperature Range (junction) TJ -40 125 °C 4
Supply Voltage (LM2576) 4.5 40 V 4
Maximum Supply Voltage (LM2576) 45 V 4
ON/OFF Pin Input Voltage (-0.3 ≤ V ≤ +VIN) -0.3 V 4
Output Voltage to Ground (Steady State) -1 V Steady state 4
Storage Temperature Range -65 150 °C 4
Maximum Junction Temperature 150 °C 4
Minimum ESD Rating 2 kV C=100pF, R=1.5kΩ 4
Lead Temperature (Soldering) 260 °C Soldering, 10 seconds 4

CAD (KiCad official)

  • Symbol: LM2576S-5.0
  • Footprint: Package_TO_SOT_SMD:TO-263-5_TabPin6
  • 3D model: TO-263-5 (KiCad packages3D, STEP)
  • 3D model files: lm2576s-5-0-etched.step / lm2576s-5-0-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm2576s-5-0.step / lm2576s-5-0.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
lm2576s-5-0.step 180 KB You want the bare part, or you mark your own boards.
lm2576s-5-0-etched.step 2.0 MB You want the part with LM2576S-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: 536 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 (18 pp, sha256 10275fb18a78ad8b, 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