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| NB6381 Datasheet, PDF (1/19 Pages) Monolithic Power Systems – High Efficiency, Fast Transient, 8A, 28V Synchronous Step-down Converter in a Tiny QFN20 (3x4mm) Package | |||
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The Future of Analog IC Technology
NB6381
High Efficiency, Fast Transient, 8A, 28V
Synchronous Step-down Converter
in a Tiny QFN20 (3x4mm) Package
DESCRIPTION
The NB6381 is a fully integrated, high
frequency synchronous rectified step-down
switch mode converter. It offers a very compact
solution to achieve 8A continuous output
current over a wide input supply range with
excellent load and line regulation. The NB6381
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.
Full protection features include SCP, OCP, OVP,
UVP and thermal shutdown.
The NB6381 requires a minimum number of
readily available standard external components
and is available in a space-saving QFN20
(3x4mm) package.
FEATURES
⢠Wide 4.5V to 28V Operating Input Range
⢠8A Output Current
⢠Internal 30m⦠High-Side, 12m⦠Low-Side
Power MOSFETs
⢠Proprietary Switching Loss Reduction
Technique
⢠1% Reference Voltage
⢠Programmable Soft Start Time
⢠Soft Shutdown
⢠200kHz to 1MHz Switching Frequency
⢠SCP, OCP, OVP, UVP Protection and
Thermal Shutdown
⢠Output Adjustable from 0.8V to 13V
⢠Available in a QFN20 (3x4mm) Package
APPLICATIONS
⢠Notebook Systems and I/O Power
⢠Networking Systems
⢠Optical Communication Systems
⢠Distributed Power and POL 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.
. âMPSâ and âThe Future of Analog IC Technologyâ are Registered Trademarks
of Monolithic Power Systems, Inc.
TYPICAL APPLICATION
VIN
R7
8,19 IN
BST 7
NB6381 SW
2 FREQ
9,10,17,18
20 VCC
PGOOD
EN
5 EN
FB 3
C4
220pF
VOUT 1.05V
SS AGND PGND
4
1
CSS
33nF
11-16
NB6381 Rev. 1.15
www.MonolithicPower.com
1
4/18/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
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