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MP2305 Datasheet

  • MP2305

  • Monolithic Power Systems [2A, 23V Synchronous Rectified Ste...

  • 298.74KB

  • MPS

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TM
MP2305
2A, 23V Synchronous Rectified
Step-Down Converter
The Future of Analog IC Technology
TM
DESCRIPTION
The MP2305 is a monolithic synchronous buck
regulator. The device integrates 130m鈩?/div>
MOSFETS that provide 2A continuous load
current over a wide operating input voltage of
4.75V to 23V. Current mode control provides
fast transient response and cycle-by-cycle
current limit.
An adjustable soft-start prevents inrush current
at turn-on. Shutdown mode drops the supply
current to 1碌A.
This device, available in an 8-pin SOIC
package, provides a very compact system
solution with minimal reliance on external
components.
FEATURES
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
2A Output Current
Wide 4.75V to 23V Operating Input Range
Integrated 130m鈩?Power MOSFET Switches
Output Adjustable from 0.923V to 20V
Up to 93% Efficiency
Programmable Soft-Start
Stable with Low ESR Ceramic Output Capacitors
Fixed 340KHz Frequency
Cycle-by-Cycle Over Current Protection
Input Under Voltage Lockout
Distributed Power Systems
Networking Systems
FPGA, DSP, ASIC Power Supplies
Green Electronics/ Appliances
Notebook Computers
APPLICATIONS
EVALUATION BOARD REFERENCE
Board Number
EV2305DS-00A
Dimensions
2.0鈥漍 x 1.5鈥漎 x 0.5鈥漐
鈥淢PS鈥?and 鈥淭he Future of Analog IC Technology鈥?are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
INPUT
4.75V to 23V
C5
10nF
100
95
V
OUT
= 3.3V
V
OUT
= 2.5V
90
Efficiency vs
Load Current
EFFICIENCY (%)
2
7
IN
EN
1
BS
3
SW
MP2305
8
SS
GND
4
FB
COMP
6
5
OUTPUT
3.3V
2A
85
80
75
70
65
60
55
50
0
C3
3.3nF
0.5
1.0
1.5
2.0
LOAD CURRENT (A)
2.5
MP2305-TAC01
MP2305-EC01
MP2305 Rev. 1.7
4/17/2006
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
漏 2006 MPS. All Rights Reserved.
1

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