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| MP1583DN-LF-Z Datasheet, PDF (1/13 Pages) MPS Industries, Inc. – 3A, 23V, 385KHz Step-Down Converter | |||
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The Future of Analog IC Technology
DESCRIPTION
The MP1583 is a step-down regulator with a
built-in internal Power MOSFET. It achieves 3A
of 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
cycle-by-cycle current limiting and thermal
shutdown. An adjustable soft-start reduces the
stress on the input source at startup. In
shutdown mode the regulator draws 20μA of
supply current.
The MP1583 requires a minimum number of
external components, providing a compact
solution.
MP1583
3A, 23V, 385KHz
Step-Down Converter
FEATURES
⢠3A Output Current
⢠Programmable Soft-Start
⢠100m⦠Internal Power MOSFET Switch
⢠Stable with Low ESR Output Ceramic Capacitors
⢠Up to 95% Efficiency
⢠20μA Shutdown Mode
⢠Fixed 385KHz Frequency
⢠Thermal Shutdown
⢠Cycle-by-Cycle Over Current Protection
⢠Wide 4.75V to 23V Operating Input Range
⢠Output Adjustable from 1.22V to 21V
⢠Under-Voltage Lockout
APPLICATIONS
⢠Distributed Power Systems
⢠Battery Chargers
⢠Pre-Regulator for Linear Regulators
âMPSâ and âThe Future of Analog IC Technologyâ are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
INPUT
4.75V to 23V
OPEN =
AUTOMATIC
STARTUP
10μ F
CERAMIC
2
1
10nF
7
IN
EN
BS 3
SW
8
SS
MP1583
5
FB
GND
COMP
4
6
B330A
10nF
5.6nF
3.9kΩ
15μ H
10.5kΩ
OUTPUT
2.5V
3A
10kΩ
22μ F
CERAMIC
Efficiency Curve
VIN = 10V
100
VOUT=5.0V
90
80
VOUT=2.5V
VOUT=3.3V
70
60
50
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5
LOAD CURRENT (A)
MP1583_EC01
MP1583 Rev. 3.1
www.MonolithicPower.com
1
6/20/2011
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
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