Analog Devices LTC3569EUD | Demoboard DC1340A

Description

Demonstration circuit 1340 is a triple output regulator consisting of three constant-frequency step-down converters integrated into LTC3569. DC1340 has an input voltage range of 2.5V to 5.5V, with regulators capable of delivering 1.2A or 600mA of load current on corresponding output. The three regulators operate independently with individual Enable pins and enter pulse skipping or burst mode at low loads for increasing efficiency. The DC1340 is a very efficient circuit with efficiency reading above 90%. TheLTC3569 comes in a 20-pin QFN or 16-LEAD TSSOP package, which has an exposed pad on the bottomside of the IC for better thermal performance. High operating frequency of 2.25MHz allows exclusive use of the small size, low profile surface mount components. These features plus internal compensation circuits and extremely low quiescent current make theDC1340 demo board an ideal circuit for use in battery- powered, hand-held applications. DC1340 supports reference voltage programming for each regulator.This value is programmed in -25mV steps by toggling the respective Enable pin.

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