NB671 Datasheet, PDF (1/20 Pages) Monolithic Power Systems – 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.
TYPICAL APPLICATION
NB671
24V, High Current
Synchronous Step-down Converter
FEATURES
• 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
APPLICATIONS
• Laptop Computer
• Tablet PC
• Networking Systems
• Personal Video Recorders
• Flat Panel Television and Monitors
• Distributed Power Systems
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.
NB671 Rev. 1.0
www.MonolithicPower.com
1
1/14/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.