MP24183 Datasheet: White LED Driver





MP24183 White LED Driver Datasheet

Part Number MP24183
Description White LED Driver
Manufacture MPS
Total Page 12 Pages
PDF Download Download MP24183 Datasheet PDF

Features: The Future of Analog IC Technology DESCR IPTION The MP24183 is a 55V, 1A, white LED driver suitable for either step-dow n or inverting step-up/down application s. It achieves 1A peak output current o ver a wide input supply range with exce llent load and line regulation. Current mode operation provides fast transient response and eases loop stabilization. Fault condition protection includes th ermal shutdown, cycle-by-cycle peak cur rent limiting, input over voltage prote ction, open strings protection and outp ut short circuit protection. The MP2418 3 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 fo r a positive to negative power conversi on. The MP24183 requires a minimum numb er of readily available standard extern al components and is available in a 10- pin 3mm x 3mm QFN package. MP24183 1A, 55V, Programmable Frequency White LED Driver FEATURES  1A Maximum Output Current  Unique Step-up/do.

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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.
MP24183
1A, 55V, Programmable Frequency
White LED Driver
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)
0.28Internal 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
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
VIN
4.5V<VIN<55V
C1
10
OFF ON
DC or PWM Input
VDD OVP
BST
MP24183
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
MP24183 Rev. 1.0
8/28/2008
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
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