MP29296 Datasheet, PDF (1/10 Pages) Monolithic Power Systems – 2A, 23V Synchronous Rectified Step-Down Converter

The Future of Analog IC Technology
DESCRIPTION
The MP29296 is a monolithic synchronous buck
regulator. The device integrates 130mΩ
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 1µA.
This device, available in an 8-pin SOIC
package, provides a very compact system
solution with minimal reliance on external
components.
EVALUATION BOARD REFERENCE
Board Number
EV29296DS-00A
Dimensions
2.0”X x 1.5”Y x 0.5”Z
MP29296
2A, 23V Synchronous Rectified
Step-Down Converter
FEATURES
• 2A Output Current
• Wide 4.75V to 23V Operating Input Range
• Integrated 130mΩ 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
APPLICATIONS
• Distributed Power Systems
• Networking Systems
• FPGA, DSP, ASIC Power Supplies
• Green Electronics/ Appliances
• Notebook Computers
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
INPUT
4.75V to 23V
C5
10nF
2
1
IN
7
EN
BS ₃
SW
MP29296
8 _SS
FB ⁵
GND
COMP
4
6
C3
3.3nF
OUTPUT
3.3V
2A
Efficiency vs
Load Current
100
95
V_OUT = 3.3V
90
85
V_OUT = 2.5V
80
75
70
65
60
55
50
0 0.5 1.0 1.5 2.0 2.5
LOAD CURRENT (A)
MP29296 Rev. 1.7
www.MonolithicPower.com
1
2/5/2010
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