Date: 21/08/2009

2.25-MHz, 1-A DC/DC converter for use in USB power supply

TI has introduced a 2.25-MHz, 1-A DC/DC converter for USB-powered portable applications and wireless modems.

The TPS62750 is a synchronous step-down converter that supports an input voltage from 2.9 V to 6 V, and also allows it to support batteries with an extended voltage range and USB-compliant power supply requirements. The device's unique power save mode operates at light load currents over the entire load current range, and the converter can discharge during shutdown.

Key features are,

Programmable average current limiting for USB applications (50 mA to 300 mA for low current; 0.3 A to 1.3 A for high current)
+/-10 percent current accuracy
Input voltage monitoring prevents USB host from crashing
Hot plug, load disconnect, short circuit (Vin/Vout) protection

Package: 10-pin, 2.5 mm x 2.5 mm SON package
Price: Each $1.20 for 1k pieces
Availability: Now