NB632EL-LF-Z Datasheet, PDF (1/13 Pages) MPS Industries, Inc. – High Effeciency 4A, 24V, 500kHz Synchronous Step-down Converter

The Future of Analog IC Technology
DESCRIPTION
The NB632 is a high frequency synchronous
rectified step-down switch mode converter with
built-in internal power MOSFETs. It offers a
very compact solution to achieve 4A continuous
output current over a wide input supply range
with excellent load and line regulation. The
NB632 operates at high efficiency over a wide
output current load range.
Current mode operation provides fast transient
response and eases loop stabilization.
Full protection features include latch-off OCP and
thermal shut down.
The NB632 requires a minimum number of
readily available standard external components
and is available in a space saving 3mm x 4mm
14-pin QFN package.
NB632
High Effeciency 4A, 24V, 500kHz
Synchronous Step-down Converter
FEATURES
 Wide 4.5V to 24V Operating Input Range
 4A Output Current
 Low R_DS(ON) Internal Power MOSFETs
 Proprietary Switching Loss Reduction
Technique
 Fixed 500kHz Switching Frequency
 Sync from 300kHz to 2MHz External Clock
 Internal Compensation
 Latch-off OCP Protection and Thermal
Shutdown
 Output Adjustable from 0.8V
 Available in a 14-pin, QFN 3x4mm Package
APPLICATIONS
 Notebook Systems and I/O Power
 Networking Systems
 Digital Set Top Boxes
 Personal Video Recorders
 Flat Panel Television and Monitors
 Distributed Power Systems
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION （FOR NOTEBOOK）
Efficiency
100
95
VIN=7V
90
VIN=12V
85
80
VIN=24V
75
70
65
60
55
50
01
2
3
4
5
OUTPUT CURRENT (A)
NB632 Rev. 0.9
www.MonolithicPower.com
1
12/25/2013
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
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