L6732

www.DataSheet4U.com L6732 Adjustable step-down controller with synchronous rectification Features ■ ■ ■ Input voltage range from 1.8V to 14V Supply voltage range from 4.5V to 14V Adjustable output voltage down to 0.6V with ±0.8% accuracy over line voltage and temperature (0°C~125°C) Fixed frequency voltage mode control TON lower than 100ns 0% to 100% duty cycle External input voltage reference Soft-start and inhibit High current embedded drivers Predictive anti-cross conduction control Programmable high-side and low-side RDS(on) sense over-current-protection Selectable switching frequency 250KHz/ 500KHz Pre-bias start up capability Power good output Master/slave synchronization with 180° phase shift Over voltage protection Thermal shut-down Package: HTSSOP16 HTSSOP16 (Exposed Pad) ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Applications ■ ■ ■ ■ ■ ■ LCD & PDP TV High performance / high density DC-DC modules Low voltage distributed DC-DC niPOL converters DDR memory supply Graphic cards Order Codes Part number L6732 L6732TR Package HTSSOP16 HTSSOP16 Packing Tube Tape & Reel June 2006 Rev 4 1/33 www.st.com 33 Contents L6732 Contents 1 Summary description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.1 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.1 2.2 Maximu...