EV3022DQ-00A
1x, 1.5x, 2x Auto-Adjust Charge Pump
White LED Backlight Driver
Evaluation Board
EV3022DQ-00A Rev. 1.0 www.MonolithicPower.com 1
12/2/2009 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The EV3022DQ-00A is an evaluation board for
the MP3022 that can drive up to 4 backlight
WLEDs at up to 30mA each. Backlight
brightness can be adjusted with a 5-bit register
plus one bit for precise low brightness control.
The MP3022 employs a super efficient
inductorless charge pump with 1x, 1.5x, and 2x
automatic mode control to achieve high
efficiency power conversions.
Monolithic Power System’s single wire MPC
TM
serial data link provides a simple and fast
interface used to enable, disable, and set
current levels for each LED. In addition,
soft-start limits the inrush current during startup
and mode switching.
Each output is current limited, providing
controlled brightness and short circuit protection.
Thermal shutdown protection guards against
excessive loads and shorts.
The tiny 3mm x 3mm QFN 16-pin package and
small external capacitors deliver the most
compact white LED solution available.
FEATURES
• Backlight: up to 4 WLEDs at 30mA Each
• Single Wire Serial Bus (MPC
TM
Serial Data Link)
Simple, Low Overhead Solution
Fast Data Transfer Rate
• Good Current Matching at Low LED Current
• Thermal Shutdown Protection
• Under-Voltage Protection
• Available in a 3mm x 3mm 16-Pin QFN Package
• Low EMI Noise
APPLICATIONS
• Cell Phone LCD Panel Backlight
• Small LCD Panel Backlight
ELECTRICAL SPECIFICATIONS
Parameter Symbol Value Units
Input Voltage V
IN
2.7 - 5.5 V
Output Voltage V
OUT
4.0 V
Output Current I
OUT
20 mA
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
EV3022DQ-00A EVALUATION BOARD
(L x W x H) 2.6” x 2.5” x 0.5”
(6.6cm x 6.4cm x 1.2cm)
Board Number MPS IC Number
EV3022DQ-00A MP3022DQ
100
90
80
70
60
50
40
30
20
EFFICIENCY (%)
2.5 3.0 3.5 4.0 4.5
BATTERY VOLTAGE (V)
Efficiency vs
Battery Voltage
I_LED=30mAI_LED=20mA
I_LED=10mA