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PDF MP2498 Data sheet ( Hoja de datos )
| Número de pieza | MP2498 | |
| Descripción | 2A Step-Down Regulator | |
| Fabricantes | MPS | |
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The Future of Analog IC Technology
MP2498
Integrated 100V Load Dump Protection,
2A Step-Down Regulator
DESCRIPTION
The MP2498 is a high frequency monolithic
step-down switch mode converter with
integrated buck internal high side high voltage
power MOSFET and an integrated input
overvoltage protection. It provides 2A output
with current mode control for fast loop response
and easy compensation.
The wide 6.5V to 30V input range of the buck
regulator accommodates a variety of step-down
applications, including those in automotive input
environment.
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.
Fault condition protection includes cycle-by-
cycle current limiting and thermal shutdown.
The MP2498 can survive high-voltage
transients such as those found in automotive
and industrial applications.
The MP2498 requires a minimum number of
readily available standard external components.
The MP2498 is available in a 28-pin QFN
package.
FEATURES
• 100V Switch for load dump protection
• Eliminate External Transorb and Fuse
• 250mΩ Internal MOSFET in Buck Regulator
• 150kHz to 2MHz Programmable Switching
Frequency to Reduce Radio Interference
• 120μA Quiescent Current
• Ceramic Capacitor Stable
• Up to 95% Efficiency
• Output Adjustable from 0.8V to 15V
• Available in a 4x5mm 28-Pin QFN Package
APPLICATIONS
• Automotive Electronics
• Industrial Power Systems
• Distributed Power Systems
• Power Supply for Linear Charger
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
MP2498 Rev. 1.0
8/7/2012
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
1
1 page  
MP2498 –INTEGRATED 100V LOAD DUMP PROTECTION, 2A STEP-DOWN REGULATOR
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 12V, VOUT =5V, C1=4.7μF, C2= 33μF, L=10μH, TA = +25°C, unless otherwise noted.
MP2498 Rev. 1.0
8/7/2012
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
5
5 Page 
MP2498 –INTEGRATED 100V LOAD DUMP PROTECTION, 2A STEP-DOWN REGULATOR
Part Number
Wurth Electronics
7447789004
744066100
744771115
744771122
TDK
RLF7030T-4R7
SLF10145T-100
SLF12565T-150M4R2
SLF12565T-220M3R5
Toko
FDV0630-4R7M
919AS-100M
919AS-160M
919AS-220M
Table 1—Inductor Selection Guide
Inductance
(µH)
Max DCR
(Ω)
Current Rating
(A)
4.7 0.033
10 0.035
15 0.025
22 0.031
4.7 0.031
10 0.0364
15 0.0237
22 0.0316
4.7 0.049
10 0.0265
16 0.0492
22 0.0776
2.9
3.6
3.75
3.37
3.4
3
4.2
3.5
3.3
4.3
3.3
3
Dimensions
L x W x H (mm3)
7.3x7.3x3.2
10x10x3.8
12x12x6
12x12x6
7.3x6.8x3.2
10.1x10.1x4.5
12.5x12.5x6.5
12.5x12.5x6.5
7.7x7x3
10.3x10.3x4.5
10.3x10.3x4.5
10.3x10.3x4.5
Output Rectifier Diode
The output rectifier diode supplies the current to
the inductor when the high-side switch is off. To
reduce losses due to the diode forward voltage
and recovery times, use a Schottky diode.
Choose a diode whose maximum reverse voltage
rating is greater than the maximum input voltage,
and whose current rating is greater than the
maximum load current. Table 2 lists example
Schottky diodes and manufacturers.
Table 2—Diode Selection Guide
Diodes
Voltage/
Current
Rating
Manufacturer
B290-13-F
90V, 2A
Diodes Inc.
B380-13-F
80V, 3A
Diodes Inc.
CMSH2-100M 100V, 2A Central Semi
CMSH3-100MA 100V, 3A Central Semi
MP2498 Rev. 1.0
8/7/2012
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet MP2498.PDF ] | |
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