MP2377 Datasheet: Step-Down Converter





MP2377 Step-Down Converter Datasheet

Part Number MP2377
Description Step-Down Converter
Manufacture MPS
Total Page 11 Pages
PDF Download Download MP2377 Datasheet PDF

Features: The Future of Analog IC Technology DESCR IPTION The MP2377 is a monolithic step- down switch mode converter with a built in high-side power MOSFET. It achieves 3A continuous output current over a wi de input supply range with excellent lo ad and line regulation. Current mode op eration provides fast transient respons e and eases loop stabilization. Fault c ondition protection includes current li miting and thermal shutdown. The MP2377 requires a minimum number of readily a vailable standard external components a nd is available in 8-pin SOIC packages with exposed pad. MP2377 3A, 21V, 600k Hz Step-Down Converter FEATURES • Wid e 4.5V to 21V Operating Input Range • 3A Output Current • 100mΩ Internal Power MOSFET Switch • Power Good Ind icator • Fixed 600kHz Frequency • S ynchronizable to >1MHz External Clock Over Current Latch Off Protection Thermal Shutdown • Output Adjustabl e from 0.81V • Stable with Low ESR Ou tput Ceramic Capacitors • Available in Thermally Enhanced 8-Pin SOIC Packages • Suppo.

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The Future of Analog IC Technology
DESCRIPTION
The MP2377 is a monolithic step-down switch
mode converter with a built in high-side power
MOSFET. It achieves 3A continuous output
current over a wide input supply range with
excellent load and line regulation.
Current mode operation provides fast transient
response and eases loop stabilization.
Fault condition protection includes current limiting
and thermal shutdown.
The MP2377 requires a minimum number of
readily available standard external components
and is available in 8-pin SOIC packages with
exposed pad.
MP2377
3A, 21V, 600kHz
Step-Down Converter
FEATURES
Wide 4.5V to 21V Operating Input Range
3A Output Current
100mInternal Power MOSFET Switch
Power Good Indicator
Fixed 600kHz Frequency
Synchronizable to >1MHz External Clock
Over Current Latch Off Protection
Thermal Shutdown
Output Adjustable from 0.81V
Stable with Low ESR Output Ceramic
Capacitors
Available in Thermally Enhanced 8-Pin
SOIC Packages
Supports Soft-Start into Pre-Biased Output
APPLICATIONS
Distributed Power Systems
Battery Charger
Pre-Regulator for Linear Regulators
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
VIN
8
IN
2
BST
POWER
GOOD
OFF ON
3
VCC
1
MP2377 SW
6
PG
7
EN/SYNC
GND
4
5
FB
Efficiency vs
Load Current
100
80
VIN=12V
60
VIN=5V
40
20
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
LOAD CURRENT (A)
MP2377 Rev. 0.92
4/19/2011
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
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