MAX1567ETL

The MAX1567 provides a complete power-supply solution for digital cameras. It  improves performance, component count, and size compared to conventional multichannel controllers in 2-cell AA, 1-cell lithium-ion (Li+), and dualbattery designs. On-chip MOSFETs provide up to 95% efficiency for critical power supplies, while additional channels operate with external FETs for optimum design flexibility. This optimizes overall efficiency and cost, while also reducing board space. 

The MAX1567 includes six high-efficiency DC-to-DC conversion channels:

·  Step-up DC-to-DC converter with on-chip power FETs 

·  Main DC-to-DC converter with on-chip FETs, configurable to step either up or down  

·  Step-down core DC-to-DC converter with on-chip FETs 

·  DC-to-DC controller for white LEDs or other output 

·  Transformerless inverting DC-to-DC controller (typically for negative CCD bias) 

All DC-to-DC channels operate at one fixed frequency settable from 100kHz to 1MHz to optimize size, cost, and efficiency. Other features include soft-start, power-OK outputs, and overload protection. The MAX1567 is available in space-saving 40-pin thin QFN packages. An evaluation kit is available to expedite designs.