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PDF MP1472 Data sheet ( Hoja de datos )
| Número de pieza | MP1472 | |
| Descripción | 18V Synchronous Rectified Step-Down Converter | |
| Fabricantes | MPS | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MP1472 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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The Future of Analog IC Technology
DESCRIPTION
The MP1472 is a monolithic synchronous buck
regulator. The device integrates a 175mΩ high-
side MOSFET and a 115mΩ low-side MOSFET
that provide 2A of continuous load current over
a wide input voltage of 4.75V to 18V. Current
mode control provides fast transient response
and cycle-by-cycle current limit.
An adjustable soft-start prevents inrush current
at turn-on, and in shutdown mode the supply
current drops to 1µA.
This device, available in an 8-pin TSOT23-8
package, provides a very compact solution with
minimal external components.
EVALUATION BOARD REFERENCE
Board Number
Dimensions
EV1472GJ-00A
2.5”X x 2.5”Y x 0.5”Z
MP1472
2A, 18V Synchronous Rectified
Step-Down Converter
FEATURES
2A Output Current
Wide 4.75V to 18V Operating Input Range
Integrated Power MOSFET Switches
Output Adjustable from 0.923V to 15V
Up to 95% Efficiency
Programmable Soft-Start
Stable with Low ESR Ceramic Output
Capacitors
Fixed 340kHz Frequency
Cycle-by-Cycle Over Current Protection
Input Under Voltage Lockout
8–Pin TSOT23-8
APPLICATIONS
Distributed Power Systems
Networking Systems
FPGA, DSP, ASIC Power Supplies
Green Electronics/ Appliances
Notebook Computers
For MPS green status, please visit MPS website under Quality Assurance.
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
Efficiency vs. Load Current
VOUT=3.3V
100
90
80
70 VIN=4.75V
60 VIN=12V
50
40
30
20 VIN=18V
10
0
0.01
0.1
1
10
LOAD CURRENT (A)
MP1472 Rev. 1.0
9/2/2011
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
1
1 page  
MP1472 – 2A, 18V SYNCHRONOUS RECTIFIED, STEP-DOWN CONVERTER
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 12V, VO = 3.3V, CIN = 10µF, COUT = 22µF, L = 10µH, TA = +25°C, unless otherwise noted.
100 100
5
90 90
80 80 4.5
70 70
60 60
4
50 50
40 40 3.5
30 30
20 20
3
10 10
0 0 2.5
0.01
0.1
1
10
0.01
0.1
1
10
0 20 40 60 80 100
VO/AC
20mV/div.
SW
10V/div.
IINDUCTOR
1A/div.
VO/AC
20mV/div.
SW
10V/div.
IINDUCTOR
1A/div.
VO
2V/div.
EN
5V/div.
SW
10V/div.
IINDUCTOR
2A/div.
VO
2V/div.
EN
5V/div.
SW
10V/div.
IINDUCTOR
2A/div.
VO
2V/div.
EN
5V/div.
SW
10V/div.
IINDUCTOR
2A/div.
VO
2V/div.
EN
5V/div.
SW
10V/div.
IINDUCTOR
2A/div.
MP1472 Rev. 1.0
9/2/2011
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
5
5 Page 
MP1472 – 2A, 18V SYNCHRONOUS RECTIFIED, STEP-DOWN CONVERTER
typical Application circuit
Figure 3—MP1472 with 1.8V Output, 22µF/6.3V Ceramic Output Capacitor
Figure 4—MP1472 with 5.0V Output, 22µF/6.3V Ceramic Output Capacitor
MP1472 Rev. 1.0
9/2/2011
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet MP1472.PDF ] | |
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