TPS51461

TPS51461 www.ti.com SLUSAD9B – DECEMBER 2010 – REVISED SEPTEMBER 2011 3.3-V/5-V Input, 6-A, D-CAP+™ Mode Synchronous Step-Down Integrated FETs Converter With 2-Bit VID Check for Samples: TPS51461 FEATURES 1 2 Integrated FETs Converter w/TI Proprietary D-CAP+™ Mode Architecture 6-A Maximum Output Current Minimum External Parts Count Support all MLCC Output Capacitor and SP/POSCAP Auto Skip Mode Selectable 700-kHz and 1-MHz Frequency Small 4 × 4, 24-Pin, QFN Package APPLICATIONS Low-Voltage Applications Stepping Down from 5-V or 3.3-V Rail Notebook/Desktop Computers DESCRIPTION The TPS51461 is a fully integrated synchronous buck regulator employing D-CAP+™. It is used for up to 5-V step-down where system size is at its premium, performance and optimized BOM are must-haves. This device fully supports Intel system agent applications with integrated 2-bit VID function. The TPS51461 also features two switching frequency settings (700 kHz and 1 MHz), skip mode, pre-bias startup, programmable external capacitor soft-start time/voltage transition time, output discharge, internal VBST Switch, 2-V reference (±1%), power good and enable. The TPS51461 is available in a 4 mm × 4 mm, 24-pin, QFN package (Green RoHs compliant and Pb free) and is specified from -40°C to 85°C. +5V ENABLE VID0 VID1 PGOOD VIN 18 17 16 15 14 13 V5DRV V5FILT PGOOD VID1 VID0 EN 19 PGND 20 PGND 21 PGND 22 VIN 23 VIN 24 VIN TPS51461 BST 12 SW 11 SW 10 SW 9 SW 8 SW 7 GND VREF COMP SLEW ...