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EV0042 の電気的特性と機能

EV0042のメーカーはMPSです、この部品の機能は「High Efficiency Charge Pump 4 White LED Driver Evaluation Board」です。


製品の詳細 ( Datasheet PDF )

部品番号 EV0042
部品説明 High Efficiency Charge Pump 4 White LED Driver Evaluation Board
メーカ MPS
ロゴ MPS ロゴ 




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EV0042 Datasheet, EV0042 PDF,ピン配置, 機能
www.DataSheet4U.com
TM
The Future of Analog IC Technology TM
EV0042
1x, 1.5x, 2x High Efficiency Charge Pump
4 White LED Driver Evaluation Board
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
# of WLEDs
Input Voltage
LED Current
Symbol
VIN
ILED
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 1µA 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
Efficiency vs
Supply Voltage
VLED = 3.35V @ 20mA
100
90
ILED=5mA
ILED=20mA
80
70
60
50
40 ILED=10mA
30
20
10
0
2.5 3.0 3.5 4.0
SUPPLY VOLTAGE (V)
4.5
MP1519-EC01
EV0042 Rev. 1.5
10/27/2005
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
1

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EV0042 pdf, ピン配列
TM
EV0042 – 1X, 1.5X, 2X CHARGE PUMP 4 WHITE LED DRIVER EV BOARD
PRINTED CIRCUIT BOARD LAYOUT
Figure 1—Top Silk Layer
Figure 2—Top Layer
Figure 4—Bottom Layer
QUICK START GUIDE
1. Solder LED1 - LED4 to the board.
2. Attach the positive and negatives terminals of the power supply (2.5V – 5.5V) to the VIN and
GND pins, respectively.
3. The board is set up for automatic startup. Drive EN low to shut down the MP1519.
4. To use burst mode brightness control, drive EN with a PWM signal.
NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications.
Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS
products into any application. MPS will not assume any legal responsibility for any said applications.
EV0042 Rev. 1.5
10/27/2005
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
3


3Pages





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