ROHM Semiconductor BD71850MWV Power Management IC (PMIC)

ROHM BD71850MWV Programmable Power Management IC (PMIC) is a single-chip power solution for multicore multimedia System on a Chip (SoC) such as NXP’s i.MX8M Nano application processors. The device integrates power supplies for processor, memory, and system peripherals. As an OTP variant of ROHM’s BD71847AMWV PMIC for 8M Mini, the BD71850MWV is a proven solution and is featured on NXP’s 8M Nano EVK. BD71850MWV integrates six step-down converters and six general-purpose LDOs. When used with 8M Nano, one buck and two LDOs are available for user-defined uses. Operating at 1.5MHz to 2MHz and supplying up to 3A each, the buck converters achieve 83% to 95% efficiency. Five converters support DVFS for dynamic power optimization. The on-chip bucks supply power to LDOs with low output voltages (after power-on) to minimize loss. To realize the lowest bill of materials cost, the PMIC integrates a programmable power button, 32kHz crystal driver, buffered output clock, and extensive monitoring and protection circuitry.