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| MP2452 Datasheet, PDF (1/16 Pages) Monolithic Power Systems – 1A, 36V, 1MHz Step-Down Converter | |||
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The Future of Analog IC Technology
DESCRIPTION
The MP2452 is a high frequency (1MHz) step-
down switching regulator with integrated
internal high-side high voltage power MOSFET.
It provides up to 1A highly efficient output
current with current mode control for fast loop
response.
The wide 3.3V to 36V input range accommodates
a variety of step-down applications in automotive
input environment. A 3µA shutdown mode
quiescent current allows use in battery-powered
applications.
High power conversion efficiency over a wide
load range is achieved by scaling down the
switching frequency at light load condition to
reduce the switching and gate driving losses.
Frequency fold-back helps prevent inductor current
runaway during start-up. Thermal shutdown
provides reliable, fault-tolerant operation.
The MP2452 is available in the 2mm x 3mm QFN8
package.
MP2452
1A, 36V, 1MHz
Step-Down Converter
FEATURES
⢠1A Continuous Load Current
⢠130 µA Operating Quiescent Current
⢠Wide 3.3V to 36V Operating Input Range
⢠500 m⦠Internal Power MOSFET
⢠1MHz fixed Switching Frequency
⢠Internally compensated
⢠Stable with Ceramic Output Capacitors
⢠Internal Soft-Start
⢠> 90% Efficiency
⢠+0.794V FB Reference Voltage
⢠Output Adjustable from +0.794V to 33V
⢠3µA Low Shutdown Supply Current
⢠2mm x 3mm QFN8 Package
APPLICATIONS
⢠High Voltage Power Conversion
⢠Automotive Systems
⢠Industrial Power Systems
⢠Distributed Power Systems
⢠Battery Powered Systems
âMPSâ and âThe Future of Analog IC Technologyâ are Registered Trademarks of
Monolithic Power Systems, Inc..
TYPICAL APPLICATION
C3
10pF
2 BST
3
SW
1 NC MP2452 NC 8
6 GND
4
VIN
7 FB
5
EN
C4
100nF
VIN
o
C1
o
Control
L1
6.8uH
D1
VOUT
5V/1A
o
Efficiency
VOUT=5V
100
95
VIN=8V
90
VIN=12V
85
80
75
70
65
VIN=36V
60
VIN=24V
55
50
10
100
1000
OUTPUT CURRENT(mA)
MP2452 Rev. 1.0
www.MonolithicPower.com
1
9/27/2010
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
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