MP4433

36V, 3A, Low Quiescent Current, Synchronous, Step-Down Converter

Datasheet

Description

The MP4433 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 3A of 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 environments and is ideal for battery-powered applications due to its extremely low quiescent current.
The MP4433 employs advanced asynchronous mode (AAM), which helps to achieve high efficiency in 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 power good (PG) indication. 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 in short-circuit condition greatly. Thermal shutdown provides reliable and fault-tolerant operation.
The MP4433 is available in a QFN-16 (3mmx4mm) package.

Features & Benefits

Wide 3.3V to 36V Operating Input Range
3A Continuous Output Current
1μA Low Shutdown Mode Current
10μA Sleep Mode Quiescent Current
Internal 90mΩ High-Side and 40mΩ 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

Active Part Numbers:

MP4433GL-Z MP4433GL-P

Meaning of P & Z

Related Products

EVQ4433-L-00A 36V, 3A, Low Quiescent Current, Synchronous Step-Down Converter Evaluation Board

The EVQ4433-L-00A is an evaluation board designed to demonstrate the capabilities of the MP4433 and MPQ4433. The MPQ4433 is a configurable-frequency (350kHz to 2.5MHz), synchronous, step-down switching regulator with integrated internal high-side and low-side power MOSFETs (HS-FETs and LS-FETs, respectively). It provides up to 3A highly efficient output current (I_OUT) with current mode control for fast loop response.

The MPQ4433 employs advanced asynchronous modulation (AAM) mode, which helps to achieve high efficiency under light-load conditions by scaling down the switching frequency (f_SW) to reduce the switching and gate driving losses.

The EVQ4433-L-00A is a fully assembled and tested evaluation board, it generates a 5V output voltage (V_OUT) at load currents up to 3A from a 5V to 36V input voltage (V_IN) range.

$50.00
+ tax