TPS51313 Datasheet | Texas Instruments

.ti. SLUSB31 - SEPTEMBER 2012 5-V Input or 3.3-V Input, 3-A, Fully Integrated Converter Check for Samples: TPS51313 Features - 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 pensation is Required - Fixed Voltage Servo Soft-Start Function - Thermal Shutdown 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™ Open Vreg 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 ponent 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 Ro HS pliant and Pb free) and is specified between - 10°C and 85°C. SIMPLIFIED APPLICATION R1 R2 3.3 or 5V PGOOD PGND...