|
|
PDF MP2483 Data sheet ( Hoja de datos )
| Número de pieza | MP2483 | |
| Descripción | Programmable Frequency | |
| Fabricantes | MPS | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de MP2483 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
|
No Preview Available !
The Future of Analog IC Technology
DESCRIPTION
The MP2483 is a 55V, 2.5A, white LED driver
suitable for either step-down or inverting
step-up/down applications. It achieves 2.5A
peak output current over a wide input supply
range with excellent load and line regulation.
Current mode operation provides fast transient
response and eases loop stabilization. Fault
condition protection includes thermal shutdown,
cycle-by-cycle peak current limiting, open
strings protection and output short circuit
protection.
The MP2483 incorporates both DC and PWM
dimming onto a single control pin. The separate
input reference ground pin allows for direct
enable and/or dimming control for a positive to
negative power conversion.
The MP2483 requires a minimum number of
readily available standard external components
and is available in 10-pin 3mm x 3mm QFN
package and 14-pin SOIC14 packages.
MP2483
2.5A, 55V, Programmable Frequency
White LED Driver
FEATURES
• 2.5A Maximum Output Current
• Unique Step-up/down Operation (Buck-
Boost Mode)
• Wide 4.5V to 55V Operating Input Range for
Step-Down Applications (Buck Mode)
• 0.28Ω Internal Power MOSFET Switch
• Adjustable Switching Frequency
• Analog and PWM Dimming
• 0.198V Reference Voltage
• 5μA Shutdown Mode
• No Minimum LED Required
• Stable with Low ESR Output Ceramic
Capacitors
• Cycle-by-Cycle Over Current Protection
• Thermal Shutdown Protection
• Open Strings Protection
• Output Short Circuit Protection
• Available in 10-Pin 3x3 QFN Package and
14-Pin SOIC14 Package
APPLICATIONS
• General LED Illuminations
• LCD Backlight Panels
• Handheld Computers
• Automotive Internal Lighting
• Portable Multimedia Players
• Portable GPS Devices
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<VIN<55V
C1
10
OFF ON
DC or PWM Input
VDD OVP
BST
MP2483 SW
EN/DIM
INGND
FB
VSS COMP RSET
C3 L1
100nF 4.7
D1
B360A
C4
1nF
R2
C5
1nF
R4
R3
C2
2.2
R1
MP2483 Rev. 1.0
12/25/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
1
1 page  
MP2483 – 2.5A, 55V, PROGRAMABLE FREQUENCY WHITE LED DRIVER
TYPICAL PERFORMANCE CHARACTERISTICS
VIN=20V, ILED=0.7A, two 3W LED in series, step down application, unless otherwise noted.
WLED current
vs Dimming Duty
WLED Current vs VEN
Ipeak vs. Duty
800
700
600
500
400
300
200
100
0
0
0.2 0.4
0.6 0.8
1
800
700
600
500
400
300
200
100
0
-100
0
400 800 1200 1600
5
4.5
4
3.5
3
2.5
2
0 10 20 30 40 50 60 70 80 90
Efficiency vs. Input Voltage
100
95
90
85
80
75
70
65
60
0 10 20 30 40 50 60
MP2483 Rev. 1.0
12/25/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
5
5 Page 
MP2483 – 2.5A, 55V, PROGRAMABLE FREQUENCY WHITE LED DRIVER
Manufacturer
Toko
Cooper
TDK
Table 2—Suggested Surface Mount Inductors
Part Number
DS84LC-
B1015AS-4R7N
DR73-4R7-R
SLF7055T-
4R7N3R1-3PF
Inductance(µH)
4.7
4.7
4.7
Max DCR(Ω)
0.038
0.0297
0.028
Current
Rating (A)
3.8
3.78
3.6
Dimensions
L x W x H (mm3)
8.2*8.1*3.7
7.35*7.35*3.3
7.1*7.3*5.5
TYPICAL APPLICATION CIRCUITS
VIN
4.5V<VIN<55V
C1
10
OFF ON
DC or PWM Input
VDD OVP
BST
SW
EN/DIM
INGND
FB
VSS COMP RSET
C3 L1
100nF 4.7
D1
B360A
C4
1nF
R2
C5
1nF
R4
R3
C2
2.2
R1
Figure 3—Step-Down White LED Driver Application
VIN
VIN-VSS<55V
C1
10
OFF ON
DC or PWM Input
VDD OVP BST
SW
EN/DIM
INGND
FB
VSS COMP RSET
C3 L1
100nF 4.7
R4
R3
D1 C2
B360A 2.2
C4
1nF
R2
C5
1nF
R1
VSS
Figure 4— Step-up/down White LED Driver Application
MP2483 Rev. 1.0
12/25/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet MP2483.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MP2480 | (MP24xx) Microwave Schottky Ring Quads |  M-Pulse Microwave |
| MP2480 | 3A High Power LED Driver | MPS |
| MP2481 | (MP24xx) Microwave Schottky Ring Quads | M-Pulse Microwave |
| MP2481 | White LED Driver | 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 |