1 Features

• TPS564201 4-A Converter Integrated 50-mΩ and 22-mΩ FETs
• D-CAP2™ Mode Control with Fast Transient Response
• Input Voltage Range: 4.5 V to 17 V
• Output Voltage Range: 0.76 V to 7 V
• Pulse Skip Mode
• 560-kHz Switching Frequency
• Low Shutdown Current Less than 5 µA
• 1.6% Feedback Voltage Accuracy (25ºC)
• Startup from Pre-Biased Output Voltage
• Cycle-by-Cycle Overcurrent Limit
• Hiccup-mode Overcurrent Protection
• Non-Latch UVP and TSD Protections
• Fixed Soft Start: 1.0 ms
• Create a Custom Design Using the TPS564201 With the WEBENCH® Power Designer

2 Applications

• Digital TV Power Supply
• High Definition Blu-ray™ Disc Players
• Networking Home Terminal
• Digital Set Top Box (STB)
• Surveillance

3 Description

The TPS564201 is a simple, easy-to-use, 4-A synchronous step-down converter in SOT-23 package.

The device is optimized to operate with minimum external component count and also optimized to achieve low standby current.

These switch mode power supply (SMPS) devices employ D-CAP2 mode control providing a fast transient response and supporting both low-equivalent series resistance (ESR) output capacitors such as specialty polymer and ultra-low ESR ceramic capacitors with no external compensation components.

The TPS564201 operates in pulse skip mode, maintaining high efficiency during light load operation. The TPS564201 is available in a 6-pin 1.6-mm × 2.9-mm SOT (DDC) package, and specified from a –40°C to 125°C junction temperature.

1. For all available packages, see the orderable addendum at the end of the data sheet.

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Simplified Schematic

TPS564201 Efficiency