LTC3442

The LTC®3442 is a highly efficient, fixed frequency, Buck- Boost DC/DC converter, which operates from input voltages above, below, and equal to the output voltage. The topology incorporated in the IC provides a continuous transfer function through all operating modes, making the product ideal for a single ithium-Ion or multicell alkaline applications where the output voltage is within the battery voltage range.

The LTC3442 includes two 0.10 N-channel MOSFET switches and two 0.10 P-channel switches. Operating frequency and average input current limit can each be programmed with an external resistor. Quiescent current is only 35A in Burst Mode operation, maximizing battery life in portable applications. Automatic Burst Mode operation allows the user to program the load current for Burst Mode operation, or to control it manually.  Other features include 1A shutdown current, programmable soft-start, peak current limit and thermal shutdown. The LTC3442 is available in a low profile, thermally enhanced 12-lead (4mm * 3mm * 0.75mm) DFN package.