Analog Devices LTC3859A | Demoboard DC1425A

Beschreibung

Demonstration circuit DC1425A is a triple output synchronous step-up/dual step-down supply featuring the LTC®3859AIFE. The circuit size of both buck regulators fit in an area of ¾" by 1½", while the main boost circuit areais ¾" by 1¾". The package style for the LTC3859AIFE is a 38-pin exposed pad TSSOP package.The main features of the board include rail tracking (buck channels only), an internal 5V linear regulator for bias, separate RUN pins for each output, a PGOOD signal (CH1 only), an over voltage indicator for CH3 and a mode selector that allow the converter to run in CCM, pulse-skipping or Burst Mode® operation. Synchronization to an external clock is also possible.The LTC3859AIFE buck inputs are supplied from the boost output. With this boost-then-buck topology, the buck outputs maintain regulation over the entire input range.The resultant wide input voltage range of 4.5V to 36V is suitable for automotive or other battery fed application where low quiescent current is important. The LT3859AIFE data sheets give a complete description of these parts, operation and application information. The data sheets must be read in conjunction with this quick start guide for demo circuit 1425A.

Weiterführende Informationen

• Datenblatt
• Produktseite des IC-Herstellers