BD71847AMWV System PMIC for i.MX 8M Mini Family

ROHM's BD71847AMWV integrates the power rails required by i.MX 8M mini processors and system peripherals. The sequencer is compatible with power modes supported by the i.MX 8M mini processors, which makes it possible to significantly reduce development time, decrease size, and simplify the application design.

The monolithic BD71847AMWV is designed for the power supply system of the i.MX 8M mini-processor family and integrates six buck converters and six LDOs. It’s power architecture is optimized for the lowest power dissipation and longest operational times. The DC/DC regulators supply not just the processor, but also the required DDR memory as well as flashing devices, and additional peripherals can be sourced by the IC. The PMIC features a built-in 1.8 V / 3.3 V power switch for SDXC cards, a 32.768 kHz crystal oscillator driver, and multiple protection circuits such as output short-circuit, output overvoltage/overcurrent, and thermal shutdown. Buck conversion efficiency from 83% to 95% is achieved for 0.7 V to 3.3 V output. The wide input voltage range of 2.7 V to 5.5 V supports a variety of power sources ranging from batteries to USB, making them ideal for i.MX 8M mini-applications. The PMIC pin-out is optimized for the NXP processor an can be easily routed on low-cost type-3 PCBs. The total power solution requests 42 fewer parts than a discrete solution and the PCB is reduced by up to 42%.