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PDF MP2494 Data sheet ( Hoja de datos )
| Número de pieza | MP2494 | |
| Descripción | 100kHz Step-Down Converter | |
| Fabricantes | MPS | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MP2494 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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The Future of Analog IC Technology
MP2494
2A, 55V, 100kHz Step-Down Converter
DESCRIPTION
The MP2494 is a monolithic step-down switch
mode converter. It achieves 2A continuous
output current over a wide input supply range
with excellent load and line regulation.
MP2494 achieves low EMI signature with well
controlled switching edges.
Fault condition protection includes cycle-by-cycle
current limiting and thermal shutdown.
The MP2494 requires a minimum number of
readily available standard external components.
The MP2494 is available in SOIC8 and SOIC8E
package.
FEATURES
• Wide 4.5V to 55V Operating Input Range
• Output Adjustable from 0.8V to 15V
• 0.25Ω Internal Power MOSFET Switch
• Stable with Low ESR Output Ceramic
Capacitors
• Fixed 100kHz Frequency
• Low EMI signature
• Thermal Shutdown
• Cycle-by-Cycle Over Current Protection
• Available in SOIC8 and SOIC8E packages
APPLICATIONS
• USB Power Supplies
• Automotive Cigarette Lighter Adapters
All MPS parts are lead-free and adhere to the RoHS directive. 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
0.1μF
U1 7
VIN
8V-55V
220μF
63V
2.2μF
100V
1
VIN
3 EN
BST
8
SW
EN MP2494 GS 6
0.1μF
5 SS
GND
2
FB 4
L1
39μH
DR1050-390-R R1
D1 301k
2A/80V
1%
R2
57.6k
1%
5V@2A
150pF
39μF 22μF
16V 16V
VOUT
MP2494 Rev. 1.0
4/25/2012
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
1
1 page  
MP2494 –2A, 55V, 100kHz STEP-DOWN CONVERTER
TYPICAL PERFORMANCE CHARACTERISTICS
C1 =220μF, C2 =2.2μF, C3 =39μF, C4 =22μF, L =39μH, TA =25°C, unless otherwise noted.
Efficiency vs. Load Current
VOUT=5V
Efficiency vs. Load Current
VOUT=3.3V
Efficiency vs. Load Current
VOUT=2.5V
100 100
100
90
90
VIN=8V
90
VIN=4.5V
80
70 VIN=12V VIN=8V
60 VIN=50V
50
80 VIN=12V
70
60 VIN=50V
50
80 VIN=12V
70
60 VIN=50V
50
40 40
40
30 30
30
20
0.0 0.4 0.8 1.2 1.6 2.0
20
0.0 0.4 0.8 1.2 1.6 2.0
20
0.0 0.4 0.8 1.2 1.6 2.0
IOUT (A)
IOUT (A)
IOUT (A)
Load Regulation
VOUT=5V
5. 004
5. 000
VIN=8V
VIN=12V
4. 996
4. 992
4. 988
VIN=50V
4. 984
4. 980
0.0 0.4 0.8 1.2 1.6 2.0
IOUT (A)
Load Regulation
VOUT=3.3V
3. 310
3. 306
3. 302
3. 298
3. 294
VIN=8V
VIN=12V
VIN=50V
3. 290
0.0 0.4 0.8 1.2 1.6 2.0
IOUT (A)
Load Regulation
VOUT=2.5V
2. 510
2. 508
VIN=12V
2. 506
2. 504
2. 502
VIN=50V
2. 500
0.0 0.4 0.8 1.2 1.6 2.0
IOUT (A)
Maximum IOUT vs.
Duty Cycle
6. 0
5. 2
4. 4
3. 6
2. 8
2. 0
0% 20% 40% 60% 80% 100%
Loop Gain with Phase Margin
VIN=12V, VOUT=5V, IOUT=1.8A
VFB vs. T emp
50
40
30
20
10
0
-10
-20
-30
-40
-50
0. 1
Gain
1
Phase
10 100
200
160
120
80
40
0
-40
-80
-120
-160
-200
1000
0.800
0.798
0.796
0.794
0.792
0.790
-50 -20 10 40
70 100
MP2494 Rev. 1.0
4/25/2012
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
5
5 Page 
MP2494 –2A, 55V, 100kHz STEP-DOWN CONVERTER
PACKAGE INFORMATION
0.189(4.80)
0.197(5.00)
85
SOIC8
0.024(0.61)
0.063(1.60)
0.050(1.27)
PIN 1 ID
0.150(3.80)
0.157(4.00)
0.228(5.80)
0.244(6.20)
0.213(5.40)
14
TOP VIEW
RECOMMENDED LAND PATTERN
0.013(0.33)
0.020(0.51)
0.053(1.35)
0.069(1.75)
SEATING PLANE
0.004(0.10)
0.010(0.25)
0.050(1.27)
BSC
FRONT VIEW
SEE DETAIL "A"
SIDE VIEW
0.0075(0.19)
0.0098(0.25)
GAUGE PLANE
0.010(0.25) BSC
0.010(0.25)
0.020(0.50)
x 45o
0o-8o
0.016(0.41)
0.050(1.27)
DETAIL "A"
NOTE:
1) CONTROL DIMENSION IS IN INCHES. DIMENSION IN
BRACKET IS IN MILLIMETERS.
2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH,
PROTRUSIONS OR GATE BURRS.
3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH
OR PROTRUSIONS.
4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING)
SHALL BE 0.004" INCHES MAX.
5) DRAWING CONFORMS TO JEDEC MS-012, VARIATION AA.
6) DRAWING IS NOT TO SCALE.
NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications.
Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS
products into any application. MPS will not assume any legal responsibility for any said applications.
MP2494 Rev. 1.0
4/25/2012
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet MP2494.PDF ] | |
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