MPQ8873GVE-xxxx-Z

The MPQ8873 is a monolithic, DC/DC, synchronous buck-boost converter. Its wide 2.2V to 36V input voltage (VIN) range is well-suited for multi-purpose automotive and industrial applications. Proprietary constant-on-time (COT) control and a fully integrated, four-switch power converter configuration allow the chip to flexibly change the converter topology between buck mode, boost mode, and buck-boost mode. This optimizes performance and efficiency at input voltages above, below, or equal to the output voltage (VOUT). It also ensures seamless transitions between the adjacent operational regions. The MPQ8873 is controlled via a standard I2C interface. The various parameters can be adjusted by writing the settings in the device. No hardware changes are required to adjust the parameters. The switching frequency (fSW) can be set between 200kHz and 1MHz, or can be synchronized between 250kHz and 1MHz via an external clock. The configurable frequency spread spectrum can dither fSW periodically to improve EMI performance. Full protection features include input under-voltage lockout (UVLO), input over-voltage protection (OVP), output OVP, output short-circuit protection (SCP), cycle-by-cycle peak current limiting, and over-temperature shutdown. The built-in power good (PG) indicator indicates whether VOUT is regulated properly. The MPQ8873 is available in a thermally enhanced QFN-34 (4mmx5mm) package.