EVQ2483-Q-00A
55V, Programmable Frequency
White LED Driver Evaluation Board
AEC-Q100 Qualified
EVQ2483-Q-00A Rev.1.0 www.MonolithicPower.com 1
5/17/2012 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The MPQ2483 is a 55V, white LED driver
suitable for either step-down or inverting
step-up/down applications. It achieves 2.5A
peak 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 MPQ2483 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 MPQ2483 is package in QFN10 (3 x 3)mm.
MPQ2483-Q DEM O BOARDS
Board number
Operating
Mode
Input
(V)
LED#
ILED
(mA)
EVQ2483-Q-00A Buck-boost 12 1-4 700
EVQ2483-Q-00B Buck 15-50 3 700
EVQ2483-Q-00C Boost 12 6-9 500
FEATURES
• 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
APPLICATIONS
• General LED Illuminations
• LCD Backlight Panels
• Automotive Lighting
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.
EVQ2483-Q-00A EV ALUATION BOARD
(L x W x H) 5cm x 4.5cm x 0.7cm
Board Number MPS IC Number
EVQ2483-Q-00A MPQ2483DQ