製品
MP4431

MP4431

36V, 1A, Low Quiescent Current, Synchronous, Step-Down Converter AEC-Q100 Qualified

Datasheet

概要

The MP4431 is a frequency-programmable (350kHz to 2.5MHz), synchronous, step-down switching regulator with integrated, internal, high-side and low-side power MOSFETs. It provides up to 1A highly efficient output current with current mode control for fast loop response.
The wide 3.3V to 36V input range accommodates a variety of step-down applications in automotive input environment and is ideal for battery-powered applications due to its extremely low quiescent current.
The MP4431 employs advanced asynchronous mode, which helps achieve high efficiency at light-load condition by scaling down the switching frequency to reduce switching and gate driving losses.
Standard features include soft start (SS), external clock synchronization, enable (EN) control, and a power good (PG) indicator. High-duty cycle and low dropout mode are provided for automotive cold-crank condition.
Over-current protection (OCP) with valley-current detection is employed to prevent the inductor current from running away. Hiccup mode reduces the average current greatly in short-circuit condition. Thermal shutdown provides reliable and fault-tolerant operation.
The MP4431 is available in a QFN-16 (3mmx4mm) package.

機能と利点

Wide 3.3V to 36V Operating Input Range
1A Continuous Output Current
1μA Low Shutdown Mode Current
10μA Sleep Mode Quiescent Current
Internal 90mΩ High-Side and 80mΩ Low-Side MOSFETs
350kHz to 2.5MHz Programmable Switching Frequency
Fixed Output Options: 3.3V, 3.8V, 5V
Synchronize to External Clock
Selectable In-Phase or 180° Out-of-Phase
Power Good (PG) Indicator
Programmable Soft-Start (SS) Time
80ns Minimum On Time
Selectable Forced CCM or AAM
Low Dropout Mode
Over-Current Protection (OCP) with Valley-Current Detection and Hiccup
Available in a QFN-16 (3mmx4mm) Package

アクティブ部品番号

MP4431GL-P MP4431GL-Z

Evaluation Tools

EV4431-L-00A Evaluation Kit 36V, 1A, Low Quiescent Current Synchronous Step-Down ConvertorEvaluation Board

The EV4431-L-00A is an evaluation board for the MP/MPQ4431GL.

MP/MPQ4431GL is a frequency programmable (350kHz to 2.5MHz), synchronous, step-down, switching regulator with integrated internal high-side and low-side power MOSFETs. It provides up to 1A highly efficient output current with current mode control for fast loop response.

The MP/MPQ4431GL employs AAM (Advanced Asynchronous Modulation) mode which helps to achieve high efficiency at light load condition by scaling down the switching frequency to reduce the switching and gate driving losses.

The EV4431-L-00A is a fully assembled and tested evaluation board, it generates +3.3V output voltage at load current up to 1A from a 3.3V to 36V input range.

￥2,746.50
+ tax