1FEATURES

2• Integrated FETs Converter w/TI Proprietary

D-CAP+™ Mode Architecture

• Minimum External Components Count

• Support all MLCC Output Capacitor and

SP/POSCAP

• Auto-Skip Mode and Ripple Reduction Mode

• Optimized Efficiency at Light and Heavy Loads

• Selectable 800-kHz, 1-MHz, 1.2-MHz and

1.5-MHz Frequency

• Up to 6.0-V Conversion Voltage Range

• Adjustable Output Voltage Range From 0.6 V

to 2 V

• Small 3.5 mm × 4 mm, 20-Pin QFN Package

APPLICATIONS

• Low-Voltage Applications Stepping Down from

5-V or 3.3-V Rail

DESCRIPTION

The TPS51317 is a fully integrated synchronous buck

regulator employing D-CAP+™ mode architechture. It

is used for 3.3-V and 5-V step-down systems where

space is a consideration, high-performance and

optimized component count are required. The

TPS51317 features four switching frequency settings

(up to 1.5 MHz), synchronous operation in SKIP,

droop support, external tracking support, pre-bias

startup, output soft discharge, integrated bootstrap

switch, power good function, enable function and

complete protection functions, and both output

ceramic and SP/POS capacitor support. It supports

supply and conversion voltages up to 6.0 V, and

output voltages adjustable from 0.6 V to 2.0V. The

TPS51317 is available in the 3.5 mm × 4 mm 20-pin

QFN package (Green RoHs compliant and Pb free)

and is specified from -40°C to 85°C.