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TPS563201 3A Buck Regulator

Public Made by Adom

by adom

3 A synchronous step-down (buck) converter with integrated MOSFETs in a tiny SOT-23-6.

buckregulatorsynchronousstep-downpmictisot-23-6
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Contents

README

markdown

TPS563201

Texas Instruments · Switching Regulator (Buck) · SOT-23-6

The TPS563201 is a 3 A synchronous step-down (buck) converter with both high-side and low-side MOSFETs integrated. It uses D-CAP2 control for fast transient response with low external part count, converting a 4.5 V to 17 V input to output rails down to 0.76 V. The SOT-23-6 package suits point-of-load supplies on dense boards.

Pinout

Pin Name Type Function
1 GND power_in Ground pin. Source terminal of the low-side power NFET as well as the ground return for the controller circuit. Connect sensitive VFB to this GND at a single point.
2 SW output Switch node output. Connection point between the high-side and low-side NFETs; connects to the external inductor. Absolute-max range −2V to 19V.
3 VIN power_in Input voltage supply pin. Drain terminal of the high-side power NFET. Operating range 4.5V to 17V (abs-max 19V).
4 VFB input Converter feedback input. Connect to the output voltage through a feedback resistor divider; internal reference is 0.768V nominal (2% accuracy at 25°C). Abs-max 6V.
5 EN input Enable input control. Active high; must be pulled up to enable the device. Do not float. Operating range 0 to 17V (abs-max 19V).
6 VBST power_out Bootstrap supply input for the high-side NFET gate-drive circuit. Connect a 0.1µF ceramic capacitor between VBST and SW pins. Abs-max 25V (27V for 10ns transients); 6V referenced to SW.

Key specifications

Parameter Value
Type Synchronous buck (step-down) converter
Output current 3 A
Input voltage 4.5 V to 17 V
Output voltage 0.76 V to ~7 V (adjustable)
Switching frequency 580 kHz typ
Control D-CAP2 (fast transient)
Operating temperature -40 C to 125 C (junction)

Ordering variants

Same part, different packaging or reel option.

  • TPS563201DDCR
  • TPS563201DDCT

CAD (KiCad official)

  • Symbol: tps563201.kicad_sym
  • Footprint: tps563201.kicad_mod
  • 3D model: SOT-23-6 body from KiCad Package_TO_SOT_SMD/SOT-23-6.
  • 3D model files: tps563201-etched.step / tps563201-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tps563201.step / tps563201.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (30 pp, sha256 9ec97e2062d5fba1, retrieved 2026-08-17, tier: manufacturer)
  • 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