|
|
PDF MP4460 Data sheet ( Hoja de datos )
| Número de pieza | MP4460 | |
| Descripción | Step-Down Converter | |
| Fabricantes | MPS | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de MP4460 (archivo pdf) en la parte inferior de esta página. Total 18 Páginas | ||
|
No Preview Available !
MP4460
Step-Down
The Future of Analog IC Technology
DESCRIPTION
The MP446 0 is a h igh f requency step -down
switching r egulator with a n integrated internal
high-side h igh vo ltage power M OSFET. I t
provides 2.5A output with current mode control for
fast loop response and easy compensation.
The wide 3.8V to 36V input range accommodates
a var iety of st ep-down ap plications, including
those in an au tomotive inpu t env ironment. A
120µA operational quiescent current allows use in
battery-powered applications.
High pow er co nversion ef ficiency over a wid e
load range is ac hieved b y sc aling do wn th e
switching f requency at li ght lo ad co ndition to
reduce the switching and gate driving losses.
The fr equency f oldback he lps prevent indu ctor
current run away during sta rtup and thermal
shutdown provides r eliable, fa ult tolerant
operation.
In some ap plications, such as AM radio a nd
ADSL applications, in which the device is
sensitive to frequency band, the MP4460 ca n
avoid the r elated EMI problem by setting the
frequency at 4MHz.
The MP4460 is available in a small 3mm x 3mm
QFN10 package.
TYPICAL APPLICATION
C4
100nF
10
VIN
8,9 VIN
BST
SW 1,2
D1
EN
3 EN
MP4460 FB 5
7 FREQ
COMP 4
GND
6
C3
220pF
C6
NS
2.5A, 4MHz, 36V
Converter
FEATURES
• 120 μA Quiescent Current
• Wide 3.8V to 36V Operating Input Range
• 150m Ω Internal Power MOSFET
• Up to 4MHz Programmable Switching
Frequency
• Ceramic Capacitor Stable
• Internal Soft-Start
• Internally Set Current Limit without a
Current Sensing Resistor
• Up to 95% Efficiency
• Output Adjustable from 0.8V to 30V
• Available in a 3mm x 3mm QFN10 Package
APPLICATIONS
• High Voltage Power Conversion
• Automotive Systems
• Industrial Power Systems
• Distributed Power Systems
• Battery Powered Systems
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Products, Quality Assurance page.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
VOUT
3.3V
Efficiency vs
Load Current
100
90
VIN=5V
80
70 VIN=12VVIN=24V
60
50
40
30
0
VOUT=3.3V
0.5 1.0 1.5 2.0 2.5
LOAD CURRENT (A)
MP4460 Rev. 1.02
www.MonolithicPower.com
12/24/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
1
http://www.Datasheet4U.com
1 page  
MP4460 – 2.5A, 4MHz, 36V STEP-DOWN CONVERTER
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 12V, C1 = 10µF, C2 = 22µF, L = 10µH and TA = +25°C, unless otherwise noted.
MP4460 Rev. 1.02
www.MonolithicPower.com
12/24/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
5
5 Page 
MP4460 – 2.5A, 4MHz, 36V STEP-DOWN CONVERTER
Table 2—Inductor Selection Guide
Part Number
Inductance (µH)
Wurth Electronics
7447789002 2.2
7447789003 3.3
7447789004 4.7
744066100 10
744771115 15
744771122 22
TDK
RLF7030T-2R2 2.2
RLF7030T-3R3 3.3
RLF7030T-4R7 4.7
SLF10145T-100 10
SLF12565T-150M4R2 15
SLF12565T-220M3R5 22
Toko
FDV0630-2R2M 2.2
FDV0630-3R3M 3.3
FDV0630-4R7M 4.7
919AS-100M 10
919AS-160M 16
919AS-220M 22
Max DCR (Ω)
0.019
0.024
0.033
0.035
0.025
0.031
0.012 5.4
0.02 4.1
0.031 3.4
0.0364
0.0237
0.0316
0.021 5.3
0.031 4.3
0.049 3.3
0.0265
0.0492
0.0776
Current Rating (A)
4
3.42
2.9
3.6
3.75
3.37
3
4.2
3.5
4.3
3.3
3
Dimensions
L x W x H (mm3)
7.3x7.3x3.2
7.3x7.3x3.2
7.3x7.3x3.2
10x10x3.8
12x12x6
12x12x6
7.3x6.8x3.2
7.3x6.8x3.2
7.3x6.8x3.2
10.1x10.1x4.5
12.5x12.5x6.5
12.5x12.5x6.5
7.7x7x3
7.7x7x3
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 swit ch is off. To
reduce losses due to th e diode for ward voltage
and recovery times, use a Schottky diode.
Choose a diode wh ose maxi mum re verse
voltage rating is great er than the maxi mum
input voltage, and whose curre nt rating is
greater than the maximum load current. Table 3
lists example Schottky diodes an
d
manufacturers.
Table 3—Diode Selection Guide
Diodes
B340A-13-F
CMSH3-40MA
Voltage/
Current
Rating
40V, 3A
40V, 3A
Manufacturer
Diodes Inc.
Central Semi
Input Capacitor
The in put cu rrent t o t he st ep-down converter is
discontni uous, therefore a capacitor is requiredto
supply the AC current to the step-down converter
while maintaining the DC input voltage. Use lo w
ESR capacitors for the best performance. Ceramic
capacitors are preferred, but tantalum or lo w-ESR
electroyl ticcapacitors may alsosuffice.
For simplification, cho ose the input capacitor
with RMS c urrent rating greater than half of the
maximum load current.
MP4460 Rev. 1.02
www.MonolithicPower.com
12/24/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
11
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet MP4460.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MP4460 | Step-Down Converter | MPS |
| MP4462 | Step-Down Converter | MPS |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |