component

TD1501S50

Public Made by Adom

by adom

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

componentpmictd1501s50
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 td1501s50: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STEP) · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · 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 td1501s50: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STEP) · Ray
README.md td1501s50: specified limits as data (metadata.characteristics, 26 rows from the datasheet) · Ray
td1501s50-etched.fit.json td1501s50: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
td1501s50-etched.glb td1501s50: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STEP) · Ray
td1501s50-etched.step td1501s50: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STEP) · Ray
td1501s50.glb fix footprint: TO-263-2 -> TO-263-5_TabPin6 (pad_count, 5 pins) · Ray
td1501s50.kicad_mod fix footprint: TO-263-2 -> TO-263-5_TabPin6 (pad_count, 5 pins) · Ray
td1501s50.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
td1501s50.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
td1501s50.step fix footprint: TO-263-2 -> TO-263-5_TabPin6 (pad_count, 5 pins) · Ray

TD1501S50

Techcode Semicon · DC-DC Converters · TO-263-5

TD1501S50 from Techcode Semicon, 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. Recommended operating range 7V to 45V (5V version); absolute maximum 45V. Bypass with a low-ESR input capacitor close to the pin.
2 Output output Switching output pin - internal power BJT emitter. Connects to the external catch diode cathode and inductor to form the buck power stage. Delivers up to 3A load current with typical saturation voltage of 1.2V at 3A.
3 GND power_in Ground reference for the device. Tie to the system ground plane; also serves as the thermal path together with the package tab.
4 FB input Output voltage feedback pin. Internally connected to the fixed-5V resistor divider on the 5V version; connect directly to the regulator output node. Feedback bias current typically 10nA.
5 ON/OFF input TTL-compatible shutdown control. Regulator is ON when the pin is low (<1.3V typ) or left floating; regulator enters standby (IQ ≈ 80µA) when driven high (>2.0V). Absolute max Vin+0.3V.

Key specifications

Parameter Value
Manufacturer Techcode Semicon
Package TO-263-5
Category PMIC
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • TD1501S50
  • TD1501S50L50
  • TD1501S50T50

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Input Voltage VIN 3.6 45 V 4
Operating Junction Temperature TJ -40 125 ºC 4
Operating Ambient Temperature TA -40 85 ºC 4
Input Voltage VIN -0.3 45 V 4
Feedback Pin Voltage VFB -0.3 V upper limit printed as Vin+0.3 V (not numeric) 4
ON/OFF Pin Voltage VEN -0.3 V upper limit printed as Vin+0.3 V (not numeric) 4
Output Pin Voltage VSW -0.3 V upper limit printed as Vin+0.3 V (not numeric) 4
Operating Junction Temperature TJ 150 ºC 4
Storage Temperature TSTG -65 150 ºC 4
Lead Temperature (Soldering) TLEAD 260 ºC soldering, 10 sec 4
ESD (HBM) ESD 2000 V HBM 4
Oscillator frequency FOSC 127 150 173 KHz 5
Saturation voltage VSAT 1.2 1.5 V IOUT=3A 5
Current Limit ICL 4.5 6.5 A Peak Current (VFB=0V) 5
Quiescent current IQ 5 10 mA VFB=12V force driver off 5
Standby quiescent current ISTBY 80 250 uA ON/OFF=5V, VIN=36V 5
Output leakage current IL 50 uA Output=0V (VFB=12V) 5
Output leakage current IL 2 30 mA Output=-1V (VIN=36V) 5
Output Voltage (TD1501 5V) VOUT 4.75 5 5.25 V 7V ≤ VIN ≤ 45V, 0.2A ≤ ILOAD≤3A 6
ON/OFF pin logic input threshold voltage Low (Regulator ON) VIL 1.3 V Low (Regulator ON) 5
ON/OFF pin logic input threshold voltage High (Regulator OFF) VIH 2 V High (Regulator OFF) 5
ON/OFF pin input current High (Regulator OFF) IH 5 15 uA VLOGIC=2.5V (Regulator OFF) 5
ON/OFF pin input current Low (Regulator ON) IL 0.02 5 uA VLOGIC=0.5V (Regulator ON) 5
Thermal Resistance Junction to Case θJC 3.5 ºC/W TO263-5L 5
Thermal Resistance Junction to Ambient θJA 23 ºC/W TO263-5L, Note1: copper area approximately 3 in2 5
Efficiency η 83 % VIN=12V, ILOAD=3A 6

CAD (KiCad official)

  • Symbol: TD1501S50
  • Footprint: Package_TO_SOT_SMD:TO-263-5_TabPin6
  • 3D model: TO-263-5 (KiCad packages3D, STEP)
  • 3D model files: td1501s50-etched.step / td1501s50-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); td1501s50.step / td1501s50.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
td1501s50.step 180 KB You want the bare part, or you mark your own boards.
td1501s50-etched.step 1.8 MB You want the part with TD1501S50 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 490 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: Techcode Semicon datasheet (18 pp, sha256 c0e40074baddb703, 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