Datasheet > MP9840

MP9840

更新时间： 2024-04-09 19:02:42

品牌	Logo	应用领域
芯源 - MPS		/
页数	文件大小	规格书
27页	1986K
描述
36V/3.5A 低静态电流同步降压变换器

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MP9840 数据手册

MP9840

36V, 3.5A, Low I_Q,

Synchronous Step-Down Converter

DESCRIPTION

FEATURES

The MP9840 is a high-frequency, synchronous,

rectified, step-down, switch-mode converter

with built-in power MOSFETs. It offers a very

compact solution that achieves 3.5A of

continuous output current with excellent load

and line regulation over a wide 3.3V to 36V

input supply range. The switching frequency

can be programmed or synchronized to an

external clock in the range of 350kHz to

2.5MHz. The synchronous operation and ultra-

low 14μA sleep mode quiescent current provide

high efficiency over the output current load

range, allowing the MP9840 to be used in a

variety of step-down applications in automotive

input environments and battery-powered

applications.

•

2μA Low Shutdown Supply Current

14μA No-Load Quiescent Current

Internal 125mΩ High-Side and 55mΩ Low-

Side MOSFET

350kHz to 2.5MHz Programmable Switching

Frequency

Power Good (PG) Output

External Soft Start (SS)

80ns Minimum On Time

Selectable Forced CCM and AAM

Hiccup Over-Current Protection (OCP)

Available in a QFN-16 (3mmx4mm)

Package

•

APPLICATIONS

•

Automotive Systems

Industrial Power Systems

Peak-current-mode operation provides fast

transient response and eases loop stabilization.

The excellent low dropout performance allows

the MP9840 to be used in high duty cycle

applications.

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.

Full protection features include over-current

protection (OCP), short-circuit protection (SCP),

and thermal shutdown. An open-drain power

good (PG) signal indicates when the output is

within 10% of its nominal voltage.

The MP9840 is available in a space-saving

QFN-16 (3mmx4mm) package.

TYPICAL APPLICATION

VIN

VOUT

VIN

BST

GND

MP9840

OFF ON

SYNC

BIAS

PHASE

FREQ

VCC

MP9840 Rev. 1.01

1/23/2018

www.MonolithicPower.com

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

12 3 4 5 6 7...27

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