LTC3372 Configurable PMIC Buck DC/DC

Analog Devices LTC3372 is a highly flexible multioutput power management integrated circuit (PMIC). The device includes a high-performance, high voltage (HV) step-down DC/DC switching regulator controller that drives an all N-channel synchronous power FET stage from a 4.5 V to 60 V input. The LTC3372 also includes four low voltage (LV) synchronous buck regulators that can be programmed by the C1-C3 pins to share eight 1 A integrated power stages in one of eight possible configurations. Each power stage is powered from independent inputs which may be connected to the HV buck’s V_OUT or other 2.25 V to 5.5 V supplies. The CT pin programs timing parameters of the watchdog timer and LV outputs’ power-on reset (RST). Precision enable thresholds facilitate reliable power-up sequencing. This device comes in 48-pin DFN package and has a temperature range of -40°C to +150°C. The LTC3372 is ideal for multichannel power supplies found in automotive, industrial, and always-on applications.

Features
8 A x 1 A LV buck integrated power stages, configurable as 2-, 3-, or 4-output channels 8 unique output configurations (1 A to 4 A per channel) HV buck controller: VIN = 4.5 V to 60 V, VOUT = 5 V/3.3 V LV buck regulators: VINA-H = 2.25 V to 5.5 V, VOUT1-4 ≥ 0.8 V 1 MHz to 3 MHz operation (HV runs at 1/6 frequency) Programmable or synchronizable to external clock Programmable watchdog and power-on reset delay		Low total no-load input supply current (IQ) 15 µA HV controller only (5 VOUT) 23 μA HV controller only (3.3 VOUT) 33 μA HV controller (3.3 VOUT) plus one LV regulator 9 μA per additional LV regulator channel IC die temperature monitor output
Applications
Automotive Industrial always-on systems		General purpose power supplies Multichannel power supplies