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EV3011DQ-00A

EV3011DQ-00A首页预览图
型号: EV3011DQ-00A
PDF文件:
  • EV3011DQ-00A PDF文件
  • EV3011DQ-00A PDF在线浏览
功能描述: 1x, 1.5x, 2x High Efficiency Charge Pump 2 White LED Driver Evaluation Board
PDF文件大小: 159.93 Kbytes
PDF页数: 共3页
制造商: MPS[Monolithic Power Systems]
制造商LOGO: MPS[Monolithic Power Systems] LOGO
制造商网址: http://www.monolithicpower.com
捡单宝EV3011DQ-00A
PDF页面索引
120%
EV3011DQ-00A
1x, 1.5x, 2x High Efficiency Charge Pump
2 White LED Driver Evaluation Board
EV3011DQ-00A Rev. 1.1 www.MonolithicPower.com 1
10/27/2005 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
The Future of Analog IC Technology
TM
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.
ELECTRICAL SPECIFICATIONS
Parameter Symbol Value Units
# of WLEDs 2
Input Voltage V
IN
2.5 – 5.5 V
LED Current I
LED
40 mA
FEATURES
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
µA Leakage during Shutdown
Detects Changes in Battery Level
No External Schottky Diode Required
Soft-Start and Soft Switching Operation
APPLICATIONS
Cell Phones
PDA or Hand Held Computers
White LED Application at 3.6V Supply
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
EV3011DQ-00A EVALUATION BOARD
(L x W x H) 2.4” x 1.9” x 0.4”
(6.1cm x 4.8cm x 1.0cm)
Board Number MPS IC Number
EV3011DQ-00A MP3011DQ
100
90
80
70
60
50
40
30
20
10
0
EFFICIENCY (%)
2.5 3.0 3.5 4.0 4.5
SUPPLY VOLTAGE (V)
MP3011_EC01
Efficiency vs
Supply Voltage
V
LED
= 3.35V @ 40mA
I
LED
=40mA
I
LED
=20mA
I
LED
=10mA
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