LTC3371

LTC3371 FEATURES 4-Channel 8A Configurable Buck DC/DCs with Watchdog and Power-On Reset DESCRIPTION n 8 × 1A Buck Power Stages Configurable as 2, 3 or 4 Output Channels n 8 Unique Output Configurations (1A to 4A Per Channel) n Independent VIN Supplies for Each DC/DC (2.25V to 5.5V) n Low Total No Load Supply Current: n 15µA In Shutdown (All Channels Off) n 68µA One Channel Active in Burst Mode® Operation n 18µA Per Additional Channel n Precision Enable Pin Thresholds for Autonomous Sequencing n 1MHz to 3MHz RT Programmable Frequency (2MHz Default) or PLL Synchronization n Temp Monitor Indicates Die Temperature n CT Programmed Watchdog Timer n Independent RST Pins Indicate Buck in Regulation n Thermally Enhanced 38-Lead 5mm × 7mm QFN and TSSOP Packages APPLICATIONS n General Purpose Multichannel Power Supplies: Automotive, Industrial, Distributed Power Systems The LTC®3371 is a highly flexible multioutput power supply IC. The device includes four synchronous buck converters, configured to share eight 1A power stages, each of which is powered from independent 2.25V to 5.5V inputs. The DC/DCs are assigned to one of eight possible power configurations via pin programmable C1-C3 pins. The common buck switching frequency may be programmed with an external resistor, synchronized to an external oscillator, or set to a default internal 2MHz clock. The operating mode for all DC/DCs may be programmed for Burst Mode or forced continuous mode operation. The CT pin programs the timing ...