The LTC3808/9 family is a series of synchronous step-down controllers that feature a low-power, low-pin-count DFN package with an integrated start-up circuit, frequency-adjustable PLL, programmable output tracking, fast start-up mode, and power good detection.
This document describes the LTC3808, a low profile synchronous DC/DC step-down controller available in 3mm x 4mm leadless DFN or SSOP-16 packages. It supports output voltages as low as 0.6V and currents up to 7A from a 2.75V to 9.8V input range, making it suitable for lithium-ion battery inputs.
The device can supply output currents as high as 7A.
Operation requires an input range starting at 2.75V.
The adjustable operating frequency goes up to 750kHz.