MPQ4326
DESCRIPTION
The MPQ4326/4326J is a configurablefrequency (200k Hz to 2.5MHz), synchronous, step-down switching regulator with an integrated, internal high-side MOSFET (HS-FET) and low-side MOSFET (LS-FET). The device provides up to 6A of highly efficient output current (IOUT) with peak current mode control.
The MPQ4326/4326J can maintain a regulated output voltage (VOUT) across a wide input voltage (VIN) up to 36V. It provides a load dump tolerance up to 42V via the input over-voltage protection (OVP). A 1μA quiescent current (IQ) in shutdown mode allows the device to be used in batterypowered applications.
High power conversion efficiency across a wide load range is achieved by scaling down the switching frequency (f SW) under light-load conditions to reduce switching and gate driving losses. An open-drain power good (PG) signal indicates whether VOUT is within 94.5% to 105.5% of its nominal voltage.
Frequency foldback helps prevent inductor current (IL) runaway during start-up....
