The LTC3530’s constant switching frequency provides low noise and is user programmable from 300kHz up to 2MHz, allowing optimization between efficiency and solution size. The combination of compact externals and a 3mm x 3mm DFN or MSOP-10 package provide a tiny solution footprint, usually required in handheld applications.
The LTC3530 includes two N-Channel MOSFETs and two P-Channel MOSFETs (0.21 Ohm and 0.24 Ohm, respectively) to deliver efficiencies of up to 96%. Programmable Burst Mode® operation allows the user to adjust the load current at which Burst Mode initiates. Burst Mode operation requires only 40uA of quiescent current while shutdown current is less than 1uA, further extending battery run-time. Other features include soft-start, current limiting, thermal shutdown and output disconnect.
The LTC3530EDD is available from stock in a 10-lead DFN package and the LTC3530EMS is available in a 10-lead MSOP package. Pricing for both versions is $2.75 each for 1,000-piece quantities.