TM
EV3011DQ-00A
1x, 1.5x, 2x High Efficiency Charge Pump
2 White LED Driver Evaluation Board
The Future of Analog IC Technology
TM
DESCRIPTION
The EV3011DQ-00A is an evaluation board for
the MP3011, a fully automatic driver for
powering two white LEDs, with up to 4V forward
voltage, from a single Li-Ion or three NiMH
cells. The driver performs all of the sensing and
control to run the LEDs at an optimum charge
pump ratio for efficiency without an expensive
inductor. The driver allows PWM operation to
support brightness control.
The tiny 3mm x 3mm QFN16 package and
small external capacitors allow for the most
compact white LED solution available.
FEATURES
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2% LED Current Matching
High Efficiency (>93%)
Current Source Outputs
No Ballast Resistors Required
1x, 1.5x and 2x Automatic Modes
Constant Frequency Operation
Automatic LED Detection
High and Low Frequency PWM Capability
2.5V to 5.5V Operation
Less than 1
碌
A Leakage during Shutdown
Detects Changes in Battery Level
No External Schottky Diode Required
Soft-Start and Soft Switching Operation
Cell Phones
PDA or Hand Held Computers
White LED Application at 3.6V Supply
ELECTRICAL SPECIFICATIONS
Parameter
# of WLEDs
Input Voltage
LED Current
Symbol
V
IN
I
LED
Value
2
2.5 鈥?5.5
40
Units
V
mA
APPLICATIONS
鈥淢PS鈥?and 鈥淭he Future of Analog IC Technology鈥?are Trademarks of Monolithic
Power Systems, Inc.
EV3011DQ-00A EVALUATION BOARD
Efficiency vs
Supply Voltage
100
90
80
EFFICIENCY (%)
V
LED
= 3.35V @ 40mA
I
LED
=10mA
I
LED
=40mA
70
60
50
40
30
20
10
0
2.5
3.0
3.5
4.0
SUPPLY VOLTAGE (V)
4.5
I
LED
=20mA
(L x W x H) 2.4鈥?x 1.9鈥?x 0.4鈥?/div>
(6.1cm x 4.8cm x 1.0cm)
Board Number
EV3011DQ-00A
MPS IC Number
MP3011DQ
MP3011_EC01
EV3011DQ-00A Rev. 1.1
10/27/2005
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
漏 2005 MPS. All Rights Reserved.
1
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