1 Features

1• 3-A Converter Integrated 70-mΩ and 30-mΩ FETs

• D-CAP3™ Mode Control with Fast Transient

Response

• Input Voltage Range: 4.5 V to 17 V

• Output Voltage Range: 0.6 V to 7 V

• Forced Continuous Conduction Mode

• Constant 1.4-MHz Switching Frequency

• Low Shutdown Current Less than 10 μA

• 1% 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: 1.7 ms

2 Applications

• Broadband Modem

• Access Point Networks

• Wireless Routers

• Surveillance

• TV, Set-Top Boxes

3 Description

The TPS563249 is a simple, easy-to-use, 3 A

synchronous step-down converter in SOT-23

package.

The device is optimized to operate with minimum

external component counts and also optimized to

achieve low standby current.

This switching regulator employs D-CAP3 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.

TPS563249 operates in Forced Continuous

Conduction Mode (FCCM), which maintains fixed 1.4

MHz switching frequency during light load operation

and eliminates system interference. The TPS563249

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.