TPS51313

www.ti.com TPS51313 SLUSB31 – SEPTEMBER 2012 5-V Input or 3.3-V Input, 3-A, Fully Integrated Converter Check for Samples: TPS51313 FEATURES 1 234 Input Voltage VIN Range : 3.1 V to 5.5 V Bias Voltage VCC Range: 3.1 V to 5.5 V Output Voltage Range: 0.6 V to 3.3 V 0.6-V, 1% Voltage Reference Accuracy Switching Frequency: 1 MHz No External Compensation is Required Fixed Voltage Servo Soft-Start Function Thermal Shutdown X FB 1 VCC 2 VIN 3 PGND 4 PGND 5 Thermal Pad 10 EN 9 PGOOD 8 NC 7 SW 6 SW APPLICATIONS Discrete Graphics PCIe® PEX Rail Low-Voltage Point-of-Load (POL) Rails DESCRIPTION The TPS51313 is an easy-to-use, fully integrated, synchronous buck converter for low voltage point-ofload applications. It is designed to meet the NVIDIA™ OpenVreg Type 0 specifications, including the package and footprint requirement. It supports 3-A (maximum) of dc output current at output voltages from 0.6 V to 3.3 V. The D-CAP2™ mode adaptive, constant on-time control with 1-MHz switching frequency allows a small footprint when designed using all ceramic output capacitors and offers a low external component count. The device also features auto-skip function at light load condition, pre-biased start-up and internally fixed soft-start time. When the device is disabled, the output capacitor is discharged through internal resistor. The TPS51313 is available in a 3 mm x 3 mm, 10-pin DRC package (Green RoHS compliant and Pb free) and is specified between –10°C and 85°C. X ...