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TD1501HSADJ

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

TD1501HSADJ from Techcode Semicon, in a TO-263-5. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 Vin power_in Positive input supply for the switching regulator, which needs a suitable input bypass capacitor to limit voltage transients; the recommended input voltage is 3.6 V to 60 V.
2 Output output Internal switch output that swings between (+VIN - VSAT) and approximately -0.5 V at a duty cycle of about VOUT/VIN, so its PCB copper area should be kept minimal.
3 GND power_in Circuit ground return for the regulator, to be connected to a ground plane together with the input and output capacitors.
4 FB input Feedback input that senses the regulated output voltage through the external R1/R2 divider to close the control loop; in the ADJ version VFB = 1.23 V nominal and must stay within the absolute maximum of -0.3 V to Vin+0.3 V.
5 ON/OFF input Shutdown control where a logic level below about 1.3 V turns the regulator on and a level above 1.3 V (maximum 25 V) shuts it down to about 80 µA; leaving it open or tying it to GND keeps the regulator on.
6 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Techcode Semicon
Package TO-263-5
Category Power Management (PMIC)
Pins 6

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Feedback bias current Ib 10 100 nA Adjustable only, VFB=1.3V 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
Oscillator frequency FOSC 127 150 173 KHz 5
Saturation voltage VSAT 1.2 1.5 V IOUT=3A 5
Current limit (peak current) ICL 4.5 6.5 A Peak Current (VFB=0V) 5
Output leakage current IL 50 uA Output=0V (VFB=12V) 5
Output leakage current IL 2 30 mA Output=-1V (VIN=36V) 5
ON/OFF pin threshold voltage, low (regulator ON) VIL 0.6 V Low (Regulator ON) 5
ON/OFF pin 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
Output voltage (ADJ) Vout 1.18 1.23 1.28 V 11V≤VIN≤60V, 0.2A≤ILOAD≤3A, VOUT for 9V 6
Input voltage (absolute maximum) VIN -0.3 60 V 4
Feedback pin voltage (absolute maximum) VFB -0.3 V Printed as Vin+0.3 upper limit 4
ON/OFF pin voltage (absolute maximum) VEN -0.3 25 V 4
Output pin voltage (absolute maximum) VSW -0.3 V Printed as Vin+0.3 upper limit 4
Operating junction temperature (absolute maximum) TJ 150 ºC 4
Storage temperature TSTG -65 150 ºC 4
Lead temperature (soldering) TLEAD 260 ºC 10 sec 4
ESD (HBM) 4000 V HBM 4
Input voltage (recommended) VIN 3.6 60 V 4
Operating junction temperature (recommended) TJ -40 125 ºC 4
Operating ambient temperature (recommended) TA -40 85 ºC 4
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 approx. 3 in2) 5

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts copper this is the output (switch) pin, which should not have large areas of copper.) Large areas of copper provide the 12

CAD (KiCad official)

  • Symbol: TD1501HSADJ
  • Footprint: Package_TO_SOT_SMD:TO-263-5_TabPin6
  • 3D model: TO-263-5 (KiCad packages3D, STEP)
  • 3D model files: td1501hsadj-etched.step / td1501hsadj-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); td1501hsadj.step / td1501hsadj.glb are the bare package body.

Provenance

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

  • Datasheet: Techcode Semicon datasheet (16 pp, sha256 62781d364bd45725, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF