EV24183DQ-00C
1A, 55V, Programmable Frequency
White LED Driver Evaluation Board
EV24183DQ-00C Rev.1.0 www.MonolithicPower.com 1
12/18/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 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 10-pin 3mm x 3mm QFN
packages.
MP24183DQ DEMO BOARDS
Board number
Operating
Mode
Input
(V)
LED#
ILED
(mA)
EV24183DQ-00A Buck 15~50 3 700
EV24183DQ-00B Buck-boost 12 3~5 500
EV24183DQ-00C Boost 12 6~9 500
ELECTRICAL SPECIFICATIONS
Parameter Symbol Value Units
Input Voltage V
IN
12 V
LEDs # 6~9
LED Current I
LED
500 mA
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)
• 0.28Ω 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
• 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
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
Power Systems, Inc.