The MPQ2167B is a synchronous step-down converter that achieves up to 4A of continuous output current with peak current control for excellent transient response and efficiency performance. The device operates from a 2.7V to 6.0V input range, generates an output voltage as low as 0.606V, and has a configurable frequency (300kHz to 2.2MHz). It is ideal for a wide range of applications, including automotive infotainment, clusters, telematics, and portable instruments.
The device integrates a 35mΩ high-side MOSFET and a 25mΩ synchronous rectifier for high efficiency without an external Schottky diode. It can be configured for either advanced asynchronous mode (AAM) or forced continuous conduction mode (FCCM) at light-load. AAM provides high efficiency by reducing switching losses, while FCCM has a controllable frequency and lower output ripple.
The MPQ2167B offers standard features including soft start, external sync clock, enable control, and a power good indicator. In addition, the device provides over-current protection with valley current detection to avoid current runaway. Additional safety features include short-circuit protection, reliable over-voltage protection, and auto-recovery thermal protection.
With internal compensation, the MPQ2167B requires a minimal number of readily available, standard external components, and is available in a QFN-11 (2mmx3mm) package.