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參數(shù)資料
| 型號： | EV0042 |
| 廠商： | Monolithic Power Systems, Inc. |
| 英文描述： | 1x, 1.5x, 2x High Efficiency Charge Pump 4 White LED Driver Evaluation Board |
| 中文描述： | 1倍，1.5倍，2倍高效充電泵4白光LED驅(qū)動器評估板 |
| 文件頁數(shù)： | 1/3頁 |
| 文件大小： | 189K |
| 代理商： | EV0042 |
The Future of Analog IC Technology
EV0042
1x, 1.5x, 2x High Efficiency Charge Pump
4 White LED Driver Evaluation Board
EV0042 Rev. 1.5
10/27/2005
www.MonolithicPower.com
1
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2005 MPS. All Rights Reserved.
TM
TM
GENERAL DESCRIPTION
The EV0042 is an evaluation board for the
MP1519, a fully automatic driver for powering
four 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
# of WLEDs
Input Voltage
V
IN
LED Current
I
LED
Value
4
2.5 – 5.5
20
Units
V
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
μ
A 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.
EV0042 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
EV0042
MPS IC Number
MP1519DQ
100
90
80
70
60
50
40
30
20
10
0
E
2.5
3.0
SUPPLY VOLTAGE (V)
3.5
4.0
4.5
MP1519-EC01
Efficiency vs
Supply Voltage
V
LED
= 3.35V @ 20mA
I
LED
=20mA
I
LED
=10mA
I
LED
=5mA
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| EV0043 | 3A, 25V, 1.1MHz Step-Up Converter |
| EV0045 | 5W - 30W Class D Mono Bridged Audio Amplifier |
| EV0055 | Triple Output Step-Up Plus Charge Pump for TFT Bias |
| EV0056 | Fixed Frequency White LED Driver |
| EV0062 | 1.3MHz Low Power LED Torch/Flash Driver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EV0043 | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:3A, 25V, 1.1MHz Step-Up Converter |
| EV0045 | 制造商:Monolithic Power Systems 功能描述:STEREO EVALUATION BOARD - Bulk |
| EV0055 | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:Triple Output Step-Up Plus Linear Regulators for TFT Bias |
| EV0056 | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:Fixed Frequency White LED Driver |
| EV0059 | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:1.2A Synchronous Rectified Step-Down Converter |
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