MP8771

18V, 10A, 700kHz, High-Efficiency,

Synchronous, Step-Down Converter

MP8771 Rev. 1.11

www.MonolithicPower.com

1

2/24/2020

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

© 2020 MPS. All Rights Reserved.

DESCRIPTION

The MP8771 is a fully integrated, high-

frequency, synchronous, rectified, step-down,

switch-mode converter with internal power

MOSFETs. The MP8771 offers a very compact

solution that achieves 10A of continuous output

current with excellent load and line regulation

over a wide input range. The MP8771 uses

synchronous

mode

operation

for

higher

efficiency over the output current load range.

Constant-on-time

(COT)

control

operation

provides very fast transient response, easy loop

design, and very tight output regulation.

Full protection features include short-circuit

protection (SCP), over-current protection (OCP),

under-voltage protection (UVP), and thermal

shutdown.

The MP8771 requires a minimal number of

readily

available,

standard,

external

components and is available in a space-saving

QFN-16 (3mmx3mm) package.

FEATURES

 Wide 3V to 18V Operating Input Range

 10A Output Current

 17mΩ/8mΩ Low RDS(ON) Internal Power

MOSFETs

 100μA Quiescent Current

 Output Adjustable from 0.6V

 High-Efficiency Synchronous Mode

Operation

 Pre-Biased Start-Up

 Fixed 700kHz Switching Frequency

 External Programmable Soft Start-Up Time

 Enable (EN) and Power Good (PG) for

Power Sequencing

 Over-Current Protection (OCP) and Hiccup

 Thermal Shutdown

 Available in a QFN-16 (3mmx3mm)

Package

 The MPL-AY1265 Inductor Series Matches

Best Performance

APPLICATIONS

 Security Cameras

 Portable Devices, XDSL Devices

 Digital Set-Top Boxes

 Flat-Panel Television and Monitors

 General Purposes

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.

TYPICAL APPLICATION

Efficiency vs. Load Current

VOUT = 1V, L = 0.56μH, DCR = 1.5mΩ

60 

65 

70 

75 

80 

85 

90 

95 

100 

024

68

10

LOAD CURRENT(A)

VIN=5V

VIN=12V