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Contents

README

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TD1464PR

Techcode Semicon · DC-DC Converters · SOIC-8

TD1464PR from Techcode Semicon, in a SOIC-8. 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 Power input that supplies the IC and the step-down converter switches; drive it from a 9V to 45V source and bypass it to GND with a suitably large capacitor.
2 SW output Power switching output node that supplies power to the output; connect the output LC filter from SW to the load.
3 FB input Feedback input that senses the output voltage through a resistive divider, with a feedback threshold of 1.23V and an absolute maximum pin voltage of -0.3 to 5V.
4 ON/OFF input Digital enable input that turns the regulator on when driven low and off when driven high, with VIL of 0.9V and VIH of 1.0V (typical) and an absolute maximum pin voltage of -0.3 to 5V.
5 GND power_in Ground pin for the IC; the datasheet recommends a maximized copper area on the GND pins for thermal dissipation.
6 GND power_in Ground pin for the IC; the datasheet recommends a maximized copper area on the GND pins for thermal dissipation.
7 GND power_in Ground pin for the IC; the datasheet recommends a maximized copper area on the GND pins for thermal dissipation.
8 GND power_in Ground pin for the IC; the datasheet recommends a maximized copper area on the GND pins for thermal dissipation.

Key specifications

Parameter Value
Manufacturer Techcode Semicon
Package SOIC-8
Category Power Management ICs
Pins 8

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 voltage (TD1464PR, ADJ) VFB 1.2 1.23 1.26 V 9V≤VIN≤40V 4
Quiescent current IQ 3 4.5 mA ON/OFF=0V; VFB=1.5V 4
Shutdown supply current 10 uA ON/OFF=5V 4
Oscillation frequency FOSC1 120 150 180 kHz VFB>0.3 4
Maximum duty cycle DMAX 98 % 4
Input voltage VIN 9 45 V 4
Converter output current Iout 0 2 A 4
Operating junction temperature TJ -40 125 ℃ 4
Operating ambient temperature TA -40 85 ℃ 4
Input voltage (absolute) VIN -0.3 50 V 3
Feedback pin voltage VFB -0.3 5 V 3
ON/OFF pin voltage VEN -0.3 5 V 3
Output pin voltage VSW -0.3 V upper limit printed as VIN+0.3 V 3
Operating junction temperature (absolute maximum) TJ 150 ℃ 3
Storage temperature TSTG -65 150 ℃ 3
Lead temperature TLEAD 260 ℃ 3
ESD (HBM) 2000 V HBM 3
Thermal resistance, junction to ambient RθJA 85 ℃/W 3
Thermal resistance, junction to case RθJC 45 ℃/W 3
Output voltage Vout 1.23 V 4

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 4. Pour a maximized copper area to the GNDs pin and the 7

CAD (KiCad official)

  • Symbol: TD1464PR
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: td1464pr-etched.step / td1464pr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); td1464pr.step / td1464pr.glb are the bare package body.

Provenance

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

  • Datasheet: Techcode Semicon datasheet (9 pp, sha256 424c09e1a138600f, retrieved 2026-10-30, 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