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TPS564201DDCR

4A buck converter, 4.5-17V in, 600kHz, SOT-23-6, 2 external components, POL regulator

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Manufacturer Part：

TPS564201DDCR

Package：

SOT-23-6 (2.90 x 1.60 x 1.20 mm)

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Description

Product Overview

The TPS564201DDCR from Texas Instruments is a 4.5V-to-17V input, 4A synchronous step-down converter in a SOT-23-6 package. With 600kHz switching frequency and integrated power MOSFETs, it requires only two external components for a complete 4A buck regulator.

Key Specifications

Input Voltage 4.5 V to 17 V
Output Current 4 A
Output Voltage 0.768 V to 7.0 V (adjustable)
Switching Frequency 600 kHz
Quiescent Current 150 uA (typ)
Operating Temperature -40C to +125C

Features

  • 4A output current with integrated MOSFETs in SOT-23-6
  • 600kHz switching for small inductor and capacitor
  • Only 2 external components (inductor + output capacitor)
  • 0.768V feedback reference with 1% accuracy
  • Internal soft-start and OCP/OVP/thermal shutdown

Applications

  • Point-of-load regulation from 5V/12V rails
  • Set-top box and TV power supplies
  • Networking equipment POL converters
  • Industrial 12V/24V system power

The TPS564201DDCR from Texas Instruments is a 4A synchronous step-down converter in an ultra-compact SOT-23-6 package. The device operates from 4.5V to 17V input and provides an adjustable output from 0.768V to 7.0V at up to 4A. The 600kHz switching frequency allows use of small inductors and capacitors. With integrated power MOSFETs, the design requires only an inductor and output capacitor as external components. The 0.768V feedback reference has 1% accuracy over temperature. Protection features include internal soft-start (1.2ms), overcurrent protection (OCP), output overvoltage protection (OVP), and thermal shutdown. The device operates from -40C to +125C.

The TPS564201DDCR uses a DCAP2 control topology for fast transient response. (1) DCAP2 Control: A constant on-time control with internal compensation provides fast transient response without external compensation components. The on-time is adjusted by the input voltage to maintain approximately 600kHz switching frequency. (2) Power Stage: Integrated high-side and low-side N-channel MOSFETs provide synchronous rectification with up to 4A output. The low-side MOSFET operates in forced continuous conduction mode (CCM) for predictable output ripple. (3) Soft-Start: Internal 1.2ms soft-start ramps the output voltage to prevent inrush current. (4) Protection: Cycle-by-cycle overcurrent protection limits the high-side switch current. Output overvoltage protection turns off the high-side MOSFET when VOUT exceeds the setpoint by 10%. Thermal shutdown disables the converter at approximately 155C junction temperature.

Pin Name Type Function
1 GND Ground Ground and thermal pad
2 VIN Power Input supply (4.5-17V)
3 SW Output Switch node (connect to inductor)
4 BOOT I/O Bootstrap capacitor for high-side gate
5 VFB Input Feedback voltage (0.768V reference)
6 EN Input Enable (pull high to enable)
  • Point-of-load regulation from 5V or 12V rails in SOT-23-6 footprint
  • Set-top box and TV power supplies with 4A output
  • Networking equipment POL converters with 600kHz switching
  • Industrial 12V system power with minimal external components
Manufacturer Part Number Package Notes
TI TPS562201DDCR SOT-23-6 2A version, same family
TI TPS54360BDDCR SOT-23-6 3.5A, 60V input
Monolithic Power MP1657GTF-Z SOT-563-6 2A, 16V, similar class
Richtek RT6216FHN SOT-23-6 2A, 18V, similar
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