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參數(shù)資料
| 型號： | EV0022 |
| 廠商： | Monolithic Power Systems, Inc. |
| 英文描述： | Precision 6 White LED Driver Evaluation Board |
| 中文描述： | 精密6白光LED驅(qū)動器評估板 |
| 文件頁數(shù)： | 1/4頁 |
| 文件大小： | 158K |
| 代理商： | EV0022 |
EV0022 (MP1522)
Precision 6 White LED Driver
Evaluation Board
EV0022 Rev. 1.2
9/1/2006
www.MonolithicPower.com
1
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2006 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The EV0022 evaluation board uses the
MP1522 to drive up to six (6) series white LEDs
from a single cell Lithium Ion battery. The
MP1522 uses a current limited, variable
frequency architecture to regulate the LED
current, which is measured through an external
current sense resistor. Its 1.23V, 3% feedback
threshold improves the LED current regulation.
The BIAS pin can measure the output voltage
and turn off the converter to prevent damage in
an open circuit condition.
The MP1522 includes under-voltage lockout,
current limiting and thermal overload protection
preventing damage in the event of an output
overload. The MP1522 is available in tiny 5-pin
SOT23 packages.
ELECTRICAL SPECIFICATION
Parameter
Symbol
Input Voltage
V
CC
LED Current
Value
3.0 – 5.5
20
Units
V
mA
FEATURES
Internal 0.5
Power Switch
Output Voltage up to 25V
Up to 90% Efficiency
Low 1μA Shutdown Current
Input Under-Voltage Protection
Thermal Shutdown
Internal Current Limit
APPLICATIONS
Handheld Computers, PDAs
Cell Phones
Digital Still and Video Cameras
Small LCD Displays
“MPS” and “The Future of Analog IC Technology” are Registered
Trademarks of Monolithic Power Systems, Inc.
EV0022 EVALUATION BOARD
Dimensions (2.2”X x 1.5”Y x 0.5”Z)
Board Number
EV0022
MPS IC Number
MP1522DT
80
70
60
50
40
30
20
10
0
E
0
5
LED CURRENT (mA)
10
15
20
25
Efficiency vs LED Current
2 LEDs
3 LEDs
6 LEDs
V
IN
= 3.6V
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EV0030 | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:20W Class D Mono Single Ended Audio Amplifer |
| EV0033 | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:1.2A Synchronous Rectified Step-Down Converter |
| EV0034 | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:2A, 1.3MHz Step-Up Converter |
| EV0035 | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:Precision 6-Lamp White LED Driver |
| EV0037 | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:Cold Cathode Fluorescent Lamp Driver |
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