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MP24183DQ-LF-Z

P1-P3P4-P6P7-P9P10-P12
MP24183
1A, 55V, Programmable Frequency
White LED Driver
MP24183 Rev. 1.0 www.MonolithicPower.com 1
8/28/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The MP24183 is a 55V, 1A, white LED driver
suitable for either step-down or inverting
step-up/down applications. It achieves 1A 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, input over
voltage protection, open strings protection and
output short circuit protection.
The MP24183 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 MP24183 requires a minimum number of
readily available standard external components
and is available in a 10-pin 3mm x 3mm QFN
package.
FEATURES
1A 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
Input Over Voltage Protection
Output Short Circuit Protection
Available in 10-Pin 3x3 QFN Package
APPLICATIONS
General LED Illuminations
LCD Backlight Panels
Handheld Computers
Automotive Internal Lighting
Portable Multimedia Players
Portable GPS Devices
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
VDD OVP BST
SW
FB
RSETCOMP
MP24183
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
MP24183 – 1A, 55V, PROGRAMABLE FREQUENCY WHITE LED DRIVER
MP24183 Rev. 1.0 www.MonolithicPower.com 2
8/28/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
ORDERING INFORMATION
Part Number* Package Top Marking Free Air Temperature (T
A
)
MP24183DQ 3x3 QFN10 9M
-40C to +85C
* For Tape & Reel, add suffix –Z (e.g. MP24183DQ–Z).
For RoHS compliant packaging, add suffix –LF (e.g. MP24183DQ–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
ABSOLUTE MAXIMUM RATINGS
(1)
Supply Voltage V
DD
– V
SS
............................. 60V
V
SW
– V
SS
.............................. -0.3V to V
IN
+ 0.3V
V
BST
...................................................... V
SW
+ 6V
V
OVP
– V
SS
....................................... -0.3V to +6V
V
EN
– V
INGND
..................................... -0.3V to +6V
V
DIM
– V
INGND
.................................... -0.3V to +6V
V
INGND
– V
SS
..................................... -0.3V to 60V
Continuous Power Dissipation (T
A
= +25°C)
(2)
………………………………………………....2.5W
Junction Temperature ............................... 150C
Lead Temperature .................................... 260C
Storage Temperature ............... -65C to +150C
Recommended Operating Conditions
(3)
Supply Voltage V
DD
– V
SS
................. 4.5V to 55V
Operating Junct. Temp (T
J
) ..... -40C to +125C
Thermal Resistance
(4)
θ
JA
θ
JC
3x3 QFN10 .............................. 50 ...... 12 ... 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 permanent
damage.
3) The device function is not guaranteed outside of the
recommended operating conditions.
4) Measured on JESD51-7, 4-layer PCB.
MP24183 – 1A, 55V, PROGRAMABLE FREQUENCY WHITE LED DRIVER
MP24183 Rev. 1.0 www.MonolithicPower.com 3
8/28/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICES
V
IN
= 12V, T
A
= +25C, 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
)
2.0 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 h
y
s
60 mV
Notes:
5) Guaranteed by design.
P1-P3P4-P6P7-P9P10-P12

MP24183DQ-LF-Z

Mfr. #:
Buy MP24183DQ-LF-Z
Manufacturer:
Monolithic Power Systems (MPS)
Description:
LED Lighting Drivers 1A, 55V Prog WLED Driver
Lifecycle:
New from this manufacturer.
Delivery:
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