component

LM2576R-5.0

Public Made by Adom

by adom

HTC Korea TAEJIN Tech LM2576R 5 0 DC-DC Converters, TO-263-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

componentpmiclm2576r-5.0
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs lm2576r-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
lm2576r-5-0-etched.fit.json lm2576r-5-0: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
lm2576r-5-0-etched.glb lm2576r-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
lm2576r-5-0-etched.step lm2576r-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
lm2576r-5-0.glb fix footprint: TO-263-2 -> TO-263-5_TabPin6 (pad_count, 5 pins) · Ray
lm2576r-5-0.kicad_mod fix footprint: TO-263-2 -> TO-263-5_TabPin6 (pad_count, 5 pins) · Ray
lm2576r-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
lm2576r-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
lm2576r-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 lm2576r-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 lm2576r-5-0: specified limits as data (metadata.characteristics, 28 rows from the datasheet) · Ray

LM2576R-5.0

HTC Korea TAEJIN Tech · DC-DC Converters · TO-263-5

LM2576R-5.0 from HTC Korea TAEJIN Tech, 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 Positive input supply for the LM2576 step-down switching regulator. Operating range 8V-40V for the 5.0V version; absolute maximum 45V. Requires an input bypass capacitor (Cin) to minimize voltage transients and supply switching currents.
2 VOUT output Emitter of the internal switching transistor. Delivers up to 3.0A switched output; typical switch saturation voltage VSAT ≈ 1.5V. PCB copper area on this node should be minimized to reduce coupling to sensitive circuitry.
3 GND power_in Circuit ground pin. Return for the internal control circuitry and reference. Layout should provide a low-impedance return path (see application PCB layout guidance).
4 FEEDBACK input Senses the regulated output voltage to close the control loop. Internally divided (R2/R1) and applied to the internal error amplifier; nominal regulation to 5.0V ±4% on the fixed 5.0V version.
5 ON/OFF input TTL-level shutdown input. Threshold typically 1.4V: voltage above this (up to +Vin) shuts the regulator off, dropping supply current to ~80µA; below 1.4V or left open, the regulator is on. Allowed range -0.3V ≤ V ≤ +Vin.

Key specifications

Parameter Value
Manufacturer HTC Korea TAEJIN Tech
Package TO-263-5
Category PMIC
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • LM2576R-5.0
  • LM2576T-5.0
  • LM2576DP-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 (Vin=12V, ILOAD=0.5A, TJ=25℃) Vout 4.9 5 5.1 V Vin = 12V, ILOAD=0.5A, TJ=25℃ 6
Output Voltage (8.0V≤Vin≤40V, 0.5A≤ILOAD≤3.0A, TJ=25℃) Vout 4.8 5 5.2 V 8.0V≤Vin≤40V, 0.5A≤ILOAD≤3.0A, TJ=25℃ 6
Output Voltage (8.0V≤Vin≤40V, 0.5A≤ILOAD≤3.0A, TJ=-40 to +125℃) Vout 4.75 5.25 V 8.0V≤Vin≤40V, 0.5A≤ILOAD≤3.0A, TJ=-40℃ to +125℃ 6
Oscillator Frequency FOSC 47 52 58 kHz TJ=25℃ 7
Oscillator Frequency FOSC 42 63 kHz TJ=-40 to +125℃ 7
Saturation Voltage VSAT 1.8 2 V Iout=3.0A (Note 4), TJ=-40 to +125℃ 7
Max Duty Cycle ("0") DC 94 98 % Feedback removed from output and connected to 0V (Note 5) 7
Current Limit (Peak Current) ICL 4.2 5.8 6.9 A TJ=25℃ (Note 3 and 4) 7
Current Limit (Peak Current) ICL 3.5 7.5 A TJ=-40 to +125℃ (Note 3 and 4) 7
Output Leakage Current IL 0.8 50 mA Output = 0V, TJ=25℃ (Note 6 and 7) 7
Output Leakage Current IL 6 30 mA Output = -1.0V, TJ=25℃ (Note 6 and 7) 7
Quiescent Current IQ 5 9 mA TJ=25℃ (Note 6) 7
Quiescent Current IQ 11 mA TJ=-40 to +125℃ (Note 6) 7
Standby Quiescent Current ISTBY 80 200 µA ON/OFF Pin = 5.0V ("off"), TJ=25℃ 7
Standby Quiescent Current ISTBY 400 µA ON/OFF Pin = 5.0V ("off"), TJ=-40 to +125℃ 7
ON/OFF Pin Input Current, high (Regulator OFF) IIH 15 30 µA ON/OFF Pin = 5.0V (Regulator OFF), TJ=25℃ 7
ON/OFF Pin Input Current, low (Regulator ON) IIL 0 0.5 µA ON/OFF Pin = 0V (Regulator ON), TJ=25℃ 7
Maximum Supply Voltage Vin 45 V 5
On/Off Pin Input Voltage -0.3 V -0.3V ≤ V ≤ +Vin (upper limit printed as +Vin) 5
Output Voltage to Ground (Steady-State) -1 V Steady-state 5
Storage Temperature Range TSTG -60 150 ℃ 5
Minimum ESD Rating (Human Body Model) 2 kV Human Body Model, C=100 pF, R=1.5kΩ 5
Lead Temperature (Soldering, 10 seconds) 260 ℃ Soldering, 10 seconds 5
Maximum Junction Temperature TJ 150 ℃ 5
Operating Junction Temperature Range TJ -40 125 ℃ 5
Supply Voltage Vin 40 V 5
Thermal Resistance, Junction to Ambient (TO-263 5-Lead) θJA 70 ℃/W TO-263 5-Lead 5
Thermal Resistance, Junction to Case (TO-263 5-Lead) θJC 5 ℃/W TO-263 5-Lead 5

CAD (KiCad official)

  • Symbol: LM2576R-5.0
  • Footprint: Package_TO_SOT_SMD:TO-263-5_TabPin6
  • 3D model: TO-263-5 (KiCad packages3D, STEP)
  • 3D model files: lm2576r-5-0-etched.step / lm2576r-5-0-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm2576r-5-0.step / lm2576r-5-0.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
lm2576r-5-0.step 180 KB You want the bare part, or you mark your own boards.
lm2576r-5-0-etched.step 2.0 MB You want the part with LM2576R-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: 527 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: HTC Korea TAEJIN Tech datasheet (11 pp, sha256 2acb3c8a94295de6, 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