Linear Technology has a current mode, fixed frequency step-up DC/DC converter with integrated fault protection features for output shorts, input/output overvoltages, and overtemperature conditions.

The LT3579 incorporates two integrated 42V switches, a 3.4A master switch and a 2.6A slave switch, which can be tied together for a total current of 6A.

It operates from an input voltage range of 2.5V to 16V, with transient protection to 40V, making it suitable for applications with input sources ranging from a single-cell Li-Ion to automotive inputs.

The device comes in a 4 x 5mm QFN package (or TSSOP-20E).

The LT3579's low VCESAT switches, 0.25V (tied together at 5.5A), deliver efficiencies up to 90%. With both switches combined from a 5V input, the chip can deliver up to 1.7A at 12V or 1.2A at -12V.