25V Dual Step-Down DC/DC Converter Delivers 2A per Channel

The LT3510's wide input range of 3.3V to 25V makes it ideal for regulating power from a wide variety of sources, including 5V and 12V rails, unregulated wall transformers, lead acid batteries and distributed power supplies. The LT3510's switching frequency is user programmable between 250kHz and 1.5MHz, allowing optimization between efficiency and external component size.

Both of the LT3510's converters are synchronized to either an external clock input or an internal oscillator and maintain a 180 degree phase offset between channels to reduce voltage ripple and input capacitor size. An internal 0.80V reference enables sub 1V output voltages, required to power the latest generation of low voltage DSPs and microcontrollers. Independent, sequential, ratiometric or absolute tracking is easily attained between the outputs. Low drop-out internal switches enable duty cycles to reach 95% while internal cycle-by-cycle current limit provides protection against shorted outputs. The low current (<10uA) shutdown offers extended run-time in battery-powered systems.

The LT3510EFE is available from stock in a thermally enhanced TSSOP-20 package. There is also an I Grade temperature version, the LT3510IFE. Pricing starts at $3.25 and $3.90 each, respectively, for 1,000-piece quantities.