TPS62750

TPS62750, TPS62751 www.ti.com ................................................................................................................................................. SLVS955A – JULY 2009 – REVISED SEPTEMBER 2009 High Efficiency Step-Down Converter for USB Applications Check for Samples :TPS62750, TPS62751 FEATURES 1 Efficiency > 90% at Nominal Operating Conditions Programmable Average Input Current Limits for USB Applications – 50mA to 300mA for Low Current Limit Range – 300mA to 1.3A for High Current Limit Range – ±10% Current Accuracy Stable Output Voltage for Load Transients to Minimize Overshoot at Load Step Response Hot Plug and Reverse Current Protection Automatic PFM/PWM Mode transition (TPS62750) Forced PWM for Noise Sensitive Applications (TPS62751) VIN Range From 2.9V to 6V Adjustable VOUT From 0.8V to 0.85×VIN Softstart for Inrush Current Prevention 2.25 MHz Fixed Frequency Operation Short Cicruit and Thermal Shutdown Protection Available in a 2.5 × 2.5 10 pin SON Package APPLICATIONS USB Wireless Modems Portable USB peripherals Handheld Computers DESCRIPTION The TPS6275x device is a highly efficient synchronous step down dc-dc converter optimized for USB powered portable applications. It can provide up to 1300mA average input current and is ideal for applications connected to a USB host. With an input voltage range of 2.9 V to 6.0V, the device supports batteries with extended voltage range and is ideal for powering USB app...