Datasheet > MP4431GL

MP4431GL

更新时间： 2024-01-17 10:32:17

品牌	Logo	应用领域
芯源 - MPS		/
页数	文件大小	规格书
27页	1717K
描述
36V, 1A, Low Quiescent Current, Synchronous, Step-Down Converter

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MP4431GL 技术参数

生命周期：	Active	包装说明：	,
Reach Compliance Code：	compliant	风险等级：	5.74
Base Number Matches：	1

MP4431GL 数据手册

MP4431

36V, 1A, Low Quiescent Current,

Synchronous, Step-Down Converter

DESCRIPTION

FEATURES

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 of highly efficient output

current with current mode control for fast loop

response.



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



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 MP4431 employs advanced asynchronous

mode (AAM), which helps 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 a power good (PG) indicator. High-

duty cycle and low dropout mode are provided

for automotive cold-crank condition.



Available in

Package

QFN-16 (3mmx4mm)

APPLICATIONS

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.



Automotive Systems

Industrial Power Systems

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 MP4431 is available in a QFN-16

(3mmx4mm) package.

TYPICAL APPLICATION

VIN

3.3 to 36V

VIN

BST

SYNC

VOUT

MP4431

PHASE

GND

FREQ

VCC

BIAS

MP4431 Rev. 1.01

1/12/2018

www.MonolithicPower.com

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

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