1FEATURES
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

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-of-
load 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.