NB671A
24V, High Current
Synchronous Step-down Converter
The Future of Analog IC Technology
DESCRIPTION
FEATURES
The NB671A 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
NB671A operates at high efficiency over a wide
output current load range.
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Wide 5V to 24V Operating Input Range
6A Continuous Output Current
9A Peak Output Current
Low RDS(ON) Internal Power MOSFETs
Proprietary Switching Loss Reduction
Technique
1% Reference Voltage
7ms Internal Soft Start
Output Discharge
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Constant-On-Time
(COT)
control
mode
provides fast transient response and eases loop
stabilization.
500kHZ Switching Frequency
OCP, OVP, UVP Protection and Thermal
Shutdown
Under voltage lockout is internally set as 4.6 V,
An open drain power good signal indicates the
output is within its nominal voltage range.
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Output Adjustable from 0.604V to 5.5V
APPLICATIONS
Full protection features include OCP, OVP, and
thermal shut down.
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Laptop Computer
Tablet PC
Networking Systems
Personal Video Recorders
Flat Panel Television and Monitors
Distributed Power Systems
The converter requires minimum number of
external components and is available in QFN16
(3mmx3mm) package.
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
3.3
VIN
220nF
VOUT
BST
SW
VIN
EN
5V/6A
2uH
22uF
499k
VOUT
FB
150k
NB671A
22uF×3
GND
20.5k
AGND PGND
VCC
PG
100k
1uF
NB671A Rev. 1.0
9/3/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
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