LM3753

LM3753 www.ti.com SNVS614B – DECEMBER 2009 – REVISED MARCH 2013 LM3753 Scalable 2-Phase Synchronous Buck Controller with Integrated FET Drivers and Linear Regulator Controller Check for Samples: LM3753 FEATURES 1 2 Wide Input Voltage Range of 4.5V to 18V Up to 12 Channels for 300A Load System Accuracy Better Than 1% 0.6V to 3.6V Output Voltage Range Switching Frequency From 200 kHz to 1 MHz Phase Current Sharing ±12% Max Over Temperature Integrated 4.35V ±2.3% LDO Inductor DCR or Sense Resistor Current Sensing Interleaved Switching for Low I/O Ripple Current Integrated Synchronous NFET Drivers Dedicated Tracking Function Output Voltage Differential Remote Sensing Minimum Controllable On-Time of Only 50 ns Programmable Enable and Input UVLO Power Good Flag OVP, UVP and Hiccup Over-Current Protection APPLICATIONS CPUs, GPUs (graphic cards), ASICs, FPGAs, Large Memory Arrays, DDR High Current POL Converters Networking Systems Power Distribution Systems Telecom/Datacom DC/DC Converters Desktops, Servers and Workstations DESCRIPTION Not Recommended for New Designs — See LM3754 The LM3753 is a full featured single-output dualphase voltage-mode synchronous PWM buck controller. It can be configured to control from 2 to 12 interleaved power stages creating a single high power output. This controller utilizes voltage-mode control with input voltage feed-forward for high noise immunity. An internal average current loop forces real time cur...