42V quad output, triple monolithic synchronous buck converter and boost controller operates from 3V to 42V inputs

Analog Devices has launched the Power by Linear LT8603, a 42V input capable, high-efficiency quad output monolithic switching regulator. Its flexible design combines a boost controller with two high voltage 2.5A and 1.5A synchronous step-down channels and a lower voltage 1.8A synchronous step-down channel to provide four independent outputs. The device can be configured with the boost controller to supply the input of the buck converters, allowing it to deliver three precisely regulated outputs. This is the case even when the input drops significantly below the regulated output voltages, such as in automotive cold crank or start-stop situations when battery voltage can drop as low as 3V. Alternatively, the boost controller can be driven from one of the step-down outputs, providing four precisely regulated outputs with a very compact solution footprint. The device is offered in a thermally enhanced 40-lead 6mm x 6mm QFN package. Two temperature grades are available, with operation from -40C to 125C (junction) for the extended E- and industrial I-grades.