LM3753 Datasheet | Texas Instruments

FEATURES - 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 k Hz 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 - Tele/Data DC/DC Converters - Desktops, Servers and Workstations DESCRIPTION Not Remended 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 current sharing between phases during load transients. The LM3753 supports a Tracking function, so the output is controlled both up and down. This allows the output voltage to follow a system supply through the use of the TRACK pin. Available in the 5 mm x 5 mm thermally enhanced 32-lead WQFN package with a thermal pad. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Products conform to specifications per...