NB671
24V, High Current
Synchronous Step-down Converter
The Future of Analog IC Technology
DESCRIPTION
The NB671 is a fully integrated high frequency
synchronous rectified step-down switch mode
converter. It offers very compact solutions to
achieve 6A continuous output current and 9A
peak current over a wide input supply range
with excellent load and line regulation. The
NB671 operates at high efficiency over a wide
output current load range.
Constant-On-Time
(COT)
control
mode
provides fast transient response and eases loop
stabilization.
Under voltage lockout is internally set as 4.6V,
An open drain power good signal indicates the
output is within its nominal voltage range.
Full protection features include OCP, OVP, and
thermal shut down.
The converter requires minimum number of
external components and is available in QFN16
(3mmx3mm) package.
FEATURES
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Wide 5V to 24V Operating Input Range
6A Continuous Output Current
9A Peak Output Current
Low R
DS
(ON) Internal Power MOSFETs
Proprietary Switching Loss Reduction
Technique
1% Reference Voltage
1.7ms Internal Soft Start
Output Discharge
500kHZ Switching Frequency
OCP, OVP, UVP Protection and Thermal
Shutdown
Output Adjustable from 0.604V to 5.5V
Laptop Computer
Tablet PC
Networking Systems
Personal Video Recorders
Flat Panel Television and Monitors
Distributed Power Systems
APPLICATIONS
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Products, Quality Assurance page.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
NB671 Rev. 1.0
1/14/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
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