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LM2596R-5.0

Public Made by Adom

by adom

HTC Korea TAEJIN Tech LM2596R 5 0 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 lm2596r-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
lm2596r-5-0-etched.fit.json lm2596r-5-0: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
lm2596r-5-0-etched.glb lm2596r-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
lm2596r-5-0-etched.step lm2596r-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
lm2596r-5-0.glb fix footprint: TO-263-2 -> TO-263-5_TabPin6 (pad_count, 5 pins) · Ray
lm2596r-5-0.kicad_mod fix footprint: TO-263-2 -> TO-263-5_TabPin6 (pad_count, 5 pins) · Ray
lm2596r-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
lm2596r-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
lm2596r-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 lm2596r-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 lm2596r-5-0: specified limits as data (metadata.characteristics, 31 rows from the datasheet) · Ray

LM2596R-5.0

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

LM2596R-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 LM2596 step-down switching regulator. Absolute max 45V, recommended operating up to 40V. Requires a suitable input bypass capacitor (e.g. 470uF, 50V aluminum electrolytic) placed close to the pin to minimize voltage transients and supply the switching currents.
2 VOUT output Emitter of the internal NPN power switch; connects to the external inductor and catch diode of the buck converter. Saturation voltage Vsat is typically 1.16V at 3.0A. PCB area on this node should be kept small to minimize coupling to sensitive circuitry.
3 GND power_in Circuit ground pin. Use ground plane construction or single-point grounding for best regulation and noise performance.
4 FEEDBACK input Senses the regulated output voltage to close the feedback loop. On the fixed 5.0V version this pin ties directly to Vout; the internal resistor divider sets the 5.0V regulation point (Vref = 1.23V internal reference). Feedback bias current is typically 12 nA.
5 ON/OFF input Active-high shutdown input. Threshold is typically 1.3V; VIH >= 2.0V shuts the regulator OFF (dropping IQ to ~80uA typ, 200uA max), VIL <= 0.6V or floating leaves the regulator ON. Absolute input range is -0.3V to +VIN. Input current is ~5uA at 2.5V (OFF), ~0.02uA at 0.5V (ON).

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.

  • LM2596R-5.0
  • LM2596T-5.0

The extractor listed these alongside LM2596R-5.0, but they are different parts with different electrical characteristics. Do not order them as substitutes.

  • LM2596R-ADJ
  • LM2596T-ADJ
  • LM2596DP-ADJ

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℃ 3
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℃ 3
Output Voltage (8.0V≤Vin≤40V, 0.5A≤ILOAD≤3.0A), TJ=-40℃ ~ +125℃ Vout 4.75 5.25 V 8.0V≤Vin≤40V, 0.5A≤ILOAD≤3.0A, TJ=-40℃ ~ +125℃ 3
Oscillator Frequency Fosc 127 150 173 kHz TJ=25℃ 4
Oscillator Frequency Fosc 110 173 kHz TJ=0 ~ +125℃ 4
Saturation Voltage Vsat 1.16 1.4 V Iout=3.0A, TJ=25℃ 4
Saturation Voltage Vsat 1.5 V Iout=3.0A, TJ=0 ~ +125℃ 4
Current Limit (Peak Current) ICL 3.6 4.5 6.9 A TJ=25℃ 4
Current Limit (Peak Current) ICL 3.4 7.5 A TJ=0 ~ +125℃ 4
Output Leakage Current IL 50 mA Output = 0V, TJ=25℃ 4
Output Leakage Current IL 2 30 mA Output = -1.0V, TJ=25℃ 4
Quiescent Current IQ 10 mA TJ=0 ~ +125℃ 4
Standby Quiescent Current (ON/OFF Pin = 5.0V (off)) ISTBY 80 200 ㎂ ON/OFF Pin = 5.0V (off), TJ=25℃ 4
Standby Quiescent Current (ON/OFF Pin = 5.0V (off)) ISTBY 250 ㎂ ON/OFF Pin = 5.0V (off), TJ=0 ~ +125℃ 4
ON/OFF Pin Logic Input Level (Vout=0V) VIH 2 1.3 V Vout=0V, TJ=25℃ 4
ON/OFF Pin Logic Input Level (Vout=0V) VIH 2 V Vout=0V, TJ=0 ~ +125℃ 4
ON/OFF Pin Logic Input Level (Vout=Nominal Output Voltage) VIL 1.3 0.6 V Vout=Nominal Output Voltage, TJ=25℃ 4
ON/OFF Pin Logic Input Level (Vout=Nominal Output Voltage) VIL 0.6 V Vout=Nominal Output Voltage, TJ=0 ~ +125℃ 4
ON/OFF Pin Input Current (Regulator OFF) IIH 5 15 ㎂ VLOGIC = 2.5V (Regulator OFF) 4
ON/OFF Pin Input Current (Regulator ON) IIL 0.02 5 ㎂ VLOGIC = 0.5V (Regulator ON) 4
Maximum Supply Voltage Vin 45 V 2
On/Off Pin Input Voltage -0.3 V -0.3V ≤ V ≤ +Vin 2
Output Voltage to Ground (Steady-State) -1 V Steady-State 2
Thermal Resistance, Junction to Ambient (TO-263 5Lead) PθJA 70 ℃/W TO-263 5Lead 2
Thermal Resistance, Junction to Case (TO-263 5Lead) PθJC 5 ℃/W TO-263 5Lead 2
Storage Temperature Range Tstg -60 150 ℃ 2
Minimum ESD Rating (Human Body Model) 2 kV Human Body Model 2
Lead Temperature (Soldering, 10 seconds) 260 ℃ Soldering, 10 seconds 2
Maximum Junction Temperature TJ 150 ℃ 2
Operating Junction Temperature Range TJ -40 125 ℃ 3
Supply Voltage Vin 40 V 3

CAD (KiCad official)

  • Symbol: LM2596R-5.0
  • Footprint: Package_TO_SOT_SMD:TO-263-5_TabPin6
  • 3D model: TO-263-5 (KiCad packages3D, STEP)
  • 3D model files: lm2596r-5-0-etched.step / lm2596r-5-0-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm2596r-5-0.step / lm2596r-5-0.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
lm2596r-5-0.step 180 KB You want the bare part, or you mark your own boards.
lm2596r-5-0-etched.step 2.1 MB You want the part with LM2596R-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: 564 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 (8 pp, sha256 c89f43dda8481acd, 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