LTC3375 Buck Regulators

Analog Devices' LTC3375, is a highly-integrated general-purpose power management solution for systems requiring multiple low voltage power supplies. The device features eight independent 1 A channels with I²C control, flexible sequencing and fault monitoring in a compact QFN package. The LTC3375 contains eight internally compensated, high efficiency synchronous step-down regulators plus a high voltage always-ON 25 mA LDO controller. Each buck regulator has its own independent 2.25 V to 5.5 V input supply and an output voltage range of 0.425 V to V_IN. The device’s pushbutton ON / OFF / RESET control, power-on reset and watchdog timer provide flexible and reliable power-up sequencing and system monitoring. The LTC3375 features a programmable and synchronizable 1 MHz to 3 MHz oscillator with a 2 MHz default switching frequency. Quiescent current is only 11 μA with all DC / DCs off, saving battery run time. It is ideal for a wide variety of multichannel applications including industrial, automotive and communications systems.