MP24833 Datasheet: White LED Driver





MP24833 White LED Driver Datasheet

Part Number MP24833
Description White LED Driver
Manufacture MPS
Total Page 15 Pages
PDF Download Download MP24833 Datasheet PDF

Features: The Future of Analog IC Technology MP24 833 3A, 55V White LED Driver DESCRIPTI ON The MP24833 is a 55V, 3A, white LED driver suitable for step-down, invertin g step-up/down and step-up applications . It achieves 3A output current over a wide input supply range with excellent load and line regulation. Current mode operation provides fast transient respo nse and eases loop stabilization. Fault condition protection includes thermal shutdown, cycle-by-cycle peak current l imiting, open strings protection and ou tput short circuit protection. The MP24 833 incorporates both DC and PWM dimmin g onto a single control pin. The separa te input reference ground pin allows fo r direct enable and/or dimming control for a positive to negative power conver sion. The MP24833 requires a minimal nu mber of readily-available standard exte rnal components and is available in an SOIC8E package. FEATURES  3A Maximu m Output Current  Unique Step-Up/Dow n Operation (Buck- Boost Mode)  Wide 4.5V-to-55V Operating Input R.

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The Future of Analog IC Technology
MP24833
3A, 55V
White LED Driver
DESCRIPTION
The MP24833 is a 55V, 3A, white LED driver
suitable for step-down, inverting step-up/down
and step-up applications. It achieves 3A 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 MP24833 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 MP24833 requires a minimal number of
readily-available standard external components
and is available in an SOIC8E package.
FEATURES
3A 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)
0.19Internal Power MOSFET Switch
Fixed 200kHz Switching Frequency
Analog and PWM Dimming
0.198V Reference Voltage
6μA Shutdown Mode
No Minimum Number of LEDs 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 an SOIC8E Package
APPLICATIONS
General LED Illumination
LCD Backlight Panels
Notebook Computers
Automotive Internal Lighting
Portable Multimedia Players
Portable GPS Devices
All MPS parts are lead-free, halogen 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
CIN
EN/DIM
ON
OFF
DC or PWM Input
1
VDD
3
OVP
7
BST
5
EN/DIM
8
SW
6 INGND
VSS
2
4
FB
CBST
L
D Co
RFB
MP24833 Rev. 1.03
www.MonolithicPower.com
05/05/2010
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
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