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MP2483DQ-LF-P

P1-P3P4-P6P7-P9P10-P12P13-P14
MP2483
2.5A, 55V, Programmable Frequency
White LED Driver
MP2483 Rev. 1.0 www.MonolithicPower.com 1
12/25/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
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.
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)
• 0.28 Internal Power MOSFET Switch
• Adjustable Switching Frequency
• Analog and PWM Dimming
• 0.198V Reference Voltage
• 5A 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 Monolithi
c
Power Systems, Inc.
TYPICAL APPLICATION
VDD OVP BST
SW
FB
RSETCOMP
MP2483
VSS
INGND
EN/DIM
OFF
ON
L1
4.7
C3
100nF
D1
B360A
C2
2.2
C1
10
VIN
4.5V<VIN<55V
C4
1nF
DC or PWM Input
R1
R2
R3
C5
1nF
R4
MP2483 – 2.5A, 55V, PROGRAMABLE FREQUENCY WHITE LED DRIVER
MP2483 Rev. 1.0 www.MonolithicPower.com 2
12/25/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
ORDERING INFORMATION
Part Number* Package Top Marking Free Air Temperature (T
A
)
MP2483DQ 3x3 QFN10 9M
-40°C to +85°C
MP2483DS SOIC14 MP2483DS
-40°C to +85°C
* For Tape & Reel, add suffix –Z (e.g. MP2483DQ–Z).
For RoHS compliant packaging, add suffix –LF (e.g. MP2483DQ–LF–Z)
PACKAGE REFERENCE
TOP VIEW
VDD
VSS
OVP
FB
COMP
1
2
3
4
5
SW
BST
INGND
EN/DIM
RSET
10
9
8
7
6
NC
VDD
VSS
OVP
FB
COMP
NC
NC
SW
BST
INGND
EN/DIM
REST
NC
1
2
3
4
14
13
12
11
10
9
8
5
6
7
TOP VIEW
QFN10 SOIC14
ABSOLUTE MAXIMUM RATINGS
(1)
Supply Voltage V
DD
– V
SS
.............................60V
V
SW
– V
SS
.................................... -0.3V to 60.3V
V
BST
.................................................... V
SW
+ 6V
V
EN/Dim
– V
INGND
............................... -0.3V to +6V
V
INGND
– V
SS
................................... -0.3V to 60V
Other pins – V
SS
............................. -0.3V to +6V
Continuous Power Dissipation (T
A
= +25°C)
(2)
3x3 QFN10 ................................................2.5W
SOIC14......................................................1.4W
Junction Temperature.............................. 150°C
Lead Temperature ................................... 260°C
Storage Temperature............... -65°C to +150°C
Recommended Operating Conditions
(3)
Supply Voltage V
DD
– V
SS
................ 4.5V to 55V
Operating Junct. Temp (T
J
)...... -40°C to +125°C
Thermal Resistance
(4)
θ
JA
θ
JC
3x3 QFN10 .............................50 ...... 12 ...°C/W
SOIC14...................................86 ...... 38 ...°C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature T
J
(MAX), the junction-to-
ambient thermal resistance
JA
, and the ambient temperature
T
A
. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by P
D
(MAX) = (T
J
(MAX)-T
A
)/
JA
. Exceeding the maximum allowable powe
r
dissipation will cause excessive die temperature, and the
regulator will go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanen
t
damage.
3) The device function is not guaranteed outside of the
recommended operating conditions.
4) Measured on JESD51-7, 4-layer PCB.
MP2483 – 2.5A, 55V, PROGRAMABLE FREQUENCY WHITE LED DRIVER
MP2483 Rev. 1.0 www.MonolithicPower.com 3
12/25/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICES
V
IN
= 12V, T
A
= +25°C, all voltages with respect to V
SS
, unless otherwise noted.
Parameters Symbol Condition Min Typ Max Units
Feedback Voltage V
FB
4.5V ≤ V
IN
≤ 55V
0.188 0.198 0.208 V
Feedback Current I
FB
V
FB
= 0.22V -50 50 nA
Switch-On Resistance
(5)
R
DS(ON)
280 m
Switch Leakage V
EN
= 0V, V
SW
= 0V 1 A
Current Limit
(5)
3.0 A
Oscillator Frequency f
SW
V
FB
= 0.19V,
Rset=100k
0.5 MHz
Default Oscillator Frequency f
SW_default
V
FB
= 0.19V, Rset
open
1.05 1.35 1.65 MHz
Fold-back Frequency V
FB
= 0V, V
OVP
=0V 250 kHz
Maximum Duty Cycle V
FB
= 0.19V 90 %
Minimum On-Time
(5)
t
ON
100 ns
Under Voltage Lockout Threshold Rising 3 3.3 3.6 V
Under Voltage Lockout Threshold Hysteresis 100 mV
EN Input Current V
EN
= 2V 2.1 A
EN OFF Threshold (w/Respect to INGND) V
EN
Falling 0.4 V
EN ON Threshold (w/Respect to INGND) V
EN
Rising 0.6 V
Minimum EN Dimming Threshold V
FB
= 0V 0.6 0.7 0.8 V
Maximum EN Dimming Threshold V
FB
= 0.2V 1.25 1.4 1.5 V
Supply Current (Quiescent) I
Q
V
EN
= 2V, V
FB
= 1V 0.8 1.0 mA
Supply Current (Quiescent) at EN Off I
off
V
EN
=0V 3.4 15 A
Thermal Shutdown
(5)
150 °C
Open LED OV Threshold V
OVP_ th
1.1 1.2 1.3 V
Open LED OV Hysteresis V
OVP_ hys
60 mV
Notes:
5) Guaranteed by design.
P1-P3P4-P6P7-P9P10-P12P13-P14

MP2483DQ-LF-P

Mfr. #:
Buy MP2483DQ-LF-P
Manufacturer:
Monolithic Power Systems (MPS)
Description:
LED Lighting Drivers 2.5A Prog WLED Driver
Lifecycle:
New from this manufacturer.
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