|
|
PDF MP2490 Data sheet ( Hoja de datos )
| Número de pieza | MP2490 | |
| Descripción | 700KHz Step-Down Converter | |
| Fabricantes | MPS | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de MP2490 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
|
No Preview Available !
The Future of Analog IC Technology
MP2490
1.5A, 36V, 700KHz Step-Down Converter
with Programmable Output Current Limit
DESCRIPTION
The MP2490 is a monolithic step-down switch
mode converter with a programmable output
current limit. It achieves 1.5A continuous output
current over a wide input supply range with
excellent load and line regulation.
The maximum output current can be
programmed by sensing current through the
inductor DC resistance (DCR) or an accurate
sense resistor.
Fault condition protection includes cycle-by-cycle
current limiting and thermal shutdown.
The MP2490 requires a minimum number of
readily available standard external components.
The MP2490 is available in QFN10 (3mm x 3mm),
8-pin SOIC and PDIP packages.
FEATURES
• Wide 4.5V to 36V Operating Input Range
• Programmable up to 1.5A Output Current
• Output Adjustable from 0.8V to 15V
• Programmable Output Current Limit without
power loss
• 0.25Ω Internal Power MOSFET Switch
• Stable with Low ESR Output Ceramic
Capacitors
• 95% Efficiency @ 500mA (Vo=5V)
• Fixed 700kHz Frequency
• Thermal Shutdown
• Cycle-by-Cycle Over Current Protection
• Available in QFN10 (3mm x 3mm), 8-Pin
SOIC and PDIP Packages
APPLICATIONS
• USB Power Supplies
• Automotive Cigarette Lighter Adapters
• Power Supply for Linear Chargers
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
VIN
4.5V - 36V
EN
8
PGOOD
1 VIN
9
BST
ISN 6
ISP 7
MP2490
C9
10nF
R5 3 EN
SW 10
D1
5 SS
GND
2
FB 4
C6
10nF
L1
PGOOD
R8 V-PULL-UP
5V VOUT
GND
Efficiency vs.
Load Current
100
VIN=8V
90
80 VIN=12V
70
60
50
10
VIN=24V
VOUT=5V
100 1000
LOAD CURRENT (mA)
10000
MP2490 Rev. 1.0
4/9/2014
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
1
1 page  
MP2490 – 1.5A, 36V, 700kHz STEP-DOWN WITH PROGRAMMABLE OUTPUT CURRENT LIMIT
TYPICAL PERFORMANCE CHARACTERISTICS
C1=C2=4.7μF, C3=C4=10μF, C8=0.1μF, L=12μH, TA=25ºC, unless otherwise noted
Efficiency vs.
Load Current
100
VIN=8V
Efficiency vs.
Load Current
100
VIN=8V
Efficiency vs.
Load Current
100
VIN=18V
90 90
90
VIN=24V
80
VIN=12V
80
VIN=12V
80
70
60
50
10
VIN=24V
VOUT=3.3V
100
1000
10000
LOAD CURRENT (mA)
70
60
50
10
VIN=24V
VOUT=5V
100
1000
10000
LOAD CURRENT (mA)
70
60
50
10
VIN=36V
VOUT=12V
100
1000
10000
LOAD CURRENT (mA)
Load Regulation
3.40
3.36
3.32
3.28
3.24
3.20
0
VIN=5V
VIN=12V
VIN=24V
400 800 1200 1600 2000
LOAD CURRENT (mA)
Load Regulation
5.10
5.06
VIN=8V
5.02
4.98
VIN=24V VIN=12V
4.94
4.90
0
400 800 1200 1600 2000
LOAD CURRENT (mA)
Load Regulation
12.3
12.2
12.1
12.0
11.9
11.8
11.7
0
VIN=36V
VIN=24V
VIN=15V
400 800 1200 1600 2000
LOAD CURRENT (mA)
Peak Current vs.
Duty Cycle
3.2
3.0
2.8
2.6
2.4
2.2
2.0
40
VOUT=3.3V
50 60 70 80
DUTY CYCLE (%)
90
Current Regulation
VIN =12V, VOUT=5V
R: Sense to RS, L: Sense to DCR
5.5
4.5
RL
3.5
2.5
1.5
0.5
0
0.5 1.0 1.5 2.0 2.5
LOAD CURRENT (A)
Loop Gain Bode Plot
VIN =12V, VOUT=5V, IOUT=0.5A
60 135
40 Phase
20
0 Gain
90
45
0
-20 -45
-40 -90
-60
1
10 100
FREQUENCY (kHz)
-135
1000
MP2490 Rev. 1.0
4/9/2014
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
5
5 Page 
MP2490 – 1.5A, 36V, 700kHz STEP-DOWN WITH PROGRAMMABLE OUTPUT CURRENT LIMIT
PACKAGE INFORMATION
PIN 1 ID
MARKING
2.90
3.10
QFN10 (3mm x 3mm)
0.30
0.50
0.18
0.30
10
PIN 1 ID
INDEX AREA
2.90
3.10 0.50
BSC
6
1.45
1.75
PIN 1 ID
SEE DETAIL A
1
2.25
2.55
5
TOP VIEW
BOTTOM VIEW
0.20 REF
SIDE VIEW
0.80
1.00
0.00
0.05
PIN 1 ID OPTION A
R0.20 TYP.
PIN 1 ID OPTION B
R0.20 TYP.
DETAIL A
0.70
0.25
0.50
2.90
1.70
NOTE:
1) ALL DIMENSIONS ARE IN MILLIMETERS.
2) EXPOSED PADDLE SIZE DOES NOT INCLUDE MOLD FLASH.
3) LEAD COPLANARITY SHALL BE 0.10 MILLIMETER MAX.
4) DRAWING CONFORMS TO JEDEC MO-229, VARIATION VEED-5.
5) DRAWING IS NOT TO SCALE.
2.50
RECOMMENDED LAND PATTERN
MP2490 Rev. 1.0
4/9/2014
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet MP2490.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MP2490 | (MP24xx) Microwave Schottky Ring Quads |  M-Pulse Microwave |
| MP2490 | 700KHz Step-Down Converter | MPS |
| MP2491 | (MP24xx) Microwave Schottky Ring Quads | M-Pulse Microwave |
| MP2492 | (MP24xx) Microwave Schottky Ring Quads | M-Pulse Microwave |
| 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 |