LTC3371
4-Channel 8A Configurable
Buck DC/DCs with Watchdog
and Power-On Reset
DESCRIPTION FEATURES 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 V Supplies for Each DC/DC (2.25V to 5.5V)
IN
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 Synchronizatio Temp Monitor Indicates Die Temperature
n CT Programmed Watchdog Timer
n Independent RST Pins Indicate Buck in Regulatio Thermally Enhanced 38-Lead 5mm × 7mm QFN and
TSSOP Packages
n APPLICATIONS General Purpose Multichannel Power Supplies:
Automotive, Industrial, Distributed Power Systems n 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 …