Datasheet > MP4432

MP4432

更新时间： 2022-02-26 13:39:28

品牌	Logo	应用领域
芯源 - MPS		/
页数	文件大小	规格书
29页	2041K
描述
36V, 2.2A, Low Quiescent Current, Synchronous, Step-Down Converter

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MP4432 数据手册

MP4432

36V, 2.2A, Low Quiescent Current,

Synchronous, Step-Down Converter

DESCRIPTION

FEATURES

The MP4432 is a synchronous, step-down,



Wide 3.3V to 36V Operating Input Range

2.2A 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 Indicator

Programmable Soft-Start 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

switching

regulator

with

programmable

frequency (350kHz to 2.5MHz) and integrated,

internal, high-side and low-side power

MOSFETs. The MP4432 provides up to 2.2A of

highly efficient output current with current mode

control for fast loop response.



The wide 3.3V to 36V input range

accommodates

variety of step-down



applications in automotive input environments.

The MP4432 is ideal for battery-powered

applications due to its extremely low quiescent

current.



The MP4432 employs advanced asynchronous

mode (AAM) 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, external

clock synchronization, enable control, and

power good indication. High-duty cycle and low

dropout mode are provided for automotive cold-

crank.



APPLICATIONS



Automotive Systems

Industrial Power Systems

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.

All MPS parts are lead-free, halogen-free, and adhere to the RoHS

directive. For MPS green status, please visit the MPS website under

Quality Assurance. “MPS” and “The Future of Analog IC Technology” are

registered trademarks of Monolithic Power Systems, Inc.

The MP4432 is available in a QFN-16

(3mmx4mm) package.

TYPICAL APPLICATION

VIN

3.3 to 36V

VIN

BST

SYNC

VOUT

MP4432

PHASE

GND

FREQ

VCC

BIAS

MP4432 Rev. 1.01

1/12/2018

www.MonolithicPower.com

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

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