The MPQ9846 is a high-frequency, synchronous, rectified, step-down, switch-mode converter with built-in power MOSFETs. It offers a very compact solution that achieves 0.6A of continuous output current, with excellent load and line regulation over a wide 3.3V to 36V input supply range. The switching frequency can be programmed or synchronized to an external clock in the range of 350kHz to 2.5MHz. The synchronous operation and ultra-low 14μA sleep mode quiescent current provide high efficiency over the output current load range. This allows the MPQ9846 to be used in a variety of step-down applications, automotive input environments, and battery-powered applications.
Peak current mode operation provides fast transient response and eases loop stabilization. The excellent low-dropout performance allows the MPQ9846 to be used in high duty cycle applications.
Full protection features include over-current protection (OCP), short-circuit protection (SCP), and thermal shutdown. An open-drain power good (PG) signal indicates when the output is within 10% of its nominal voltage. The MPQ9846 is available in a space-saving QFN-16 (3mmx4mm) package.
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