ISL65426

DATASHEET ISL65426 6A Dual Synchronous Buck Regulator with Integrated MOSFETs FN6340 Rev 3.00 March 25, 2008 The ISL65426 is a high efficiency dual output monolithic synchronous buck converter operating over an input voltage range of 3V to 5.5V. This single chip power solution provides two output voltages, which are selectable or externally adjustable from 1V to 80% of the supply voltage while delivering up to 6A of total output current. The two PWMs are synchronized 180° out-of-phase, reducing the RMS input current and ripple voltage. The ISL65426 switches at a fixed frequency of 1MHz and utilizes current-mode control with integrated compensation to minimize the size and number of external components and provide excellent transient response. The internal synchronous power switches are optimized for good thermal performance and high efficiency. A unique power block architecture allows partitioning of six 1A blocks to support one of four configuration options. One master power block...