The MPQ8633B is a fully integrated, high-frequency, synchronous buck converter. It offers a very compact solution that can achieve up to 20A of output current (I_OUT) across a wide input voltage (V_IN) supply range, with excellent load and line regulation. The MPQ8633B operates at high efficiency over a wide output current load range.

The MPQ8633B adopts an internally compensated constant-on-time (COT) control to provide fast transient response and eases loop stabilization. The switching frequency (f_SW) can be set to 600kHz, 800kHz, or 1000kHz easily with MODE configuration, allowing f_SW to remain constant regardless of the input and output voltages.

The output voltage (V_OUT) start-up ramp is controlled by an internal 1ms timer. It can be increased by adding a capacitor on TRK/REF. An open-drain power good (PGOOD) signal indicates whether the output is within its nominal voltage range. PGOOD is clamped at about 0.7V via an external pull-up voltage when the input supply fails to power the MPQ8633B.

Full protection features include over-current protection (OCP), over-voltage protection (OVP), under-voltage protection (UVP), and over-temperature protection (OTP).

The MPQ8633B requires a minimal number of readily available, standard external components, and is available in a QFN-21 (3mmx4mm) package.