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EV0035 데이터시트 PDF




MPS에서 제조한 전자 부품 EV0035은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 EV0035 자료 제공

부품번호 EV0035 기능
기능 20mA Precision WLED Driver Evaluation Board
제조업체 MPS
로고 MPS 로고


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EV0035 데이터시트, 핀배열, 회로
www.DataSheet4U.com
TM
The Future of Analog IC Technology TM
DESCRIPTION
The EV0035 is the evaluation board for the
MP1523, which is designed for driving up to six
(6) series WLEDs from a single cell Lithium Ion
battery. The board is set up to obtain 20mA
LED current. The current can be adjusted by
varying the resistor R2.
The MP1523 uses current limited, variable
frequency architecture to regulate the LED
current while maintaining high efficiency. The
BIAS pin measures the output voltage and turns
off the converter if an over voltage condition is
present to prevent damage due to an open
circuit condition. The LED current is measured
with an external current sense resistor. The low
0.4V full-scale regulation threshold and 0.5
power switch minimize power loss to improve
efficiency.
ELECTRICAL SPECIFICATIONS
Parameter
Input Voltage
# of WLEDs
LED Current
Symbol
VIN
ILED
Value
2.7 – 25
up to 6
20
Units
V
mA
EV0035
6 White LEDs, 20mA Precision
WLED Driver Evaluation Board
FEATURES
2.7V to 25V Input Voltage Range
Drives up to 6 Series White LEDs
Surface-Mount Components
Fully Assembled and Tested
APPLICATIONS
Cell Phones
Handheld Computers and PDAs
Digital Still and Video Cameras
Small LCD Displays
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
EV0035 EVALUATION BOARD
Efficiency vs VIN
85
80
(L x W x H) 2.0” x 1.4” x 0.5”
(5.0cm x 3.5 x 1.2cm)
Board Number
EV0035
MPS IC Number
MP1523DT
75
70
2.5
3.0 3.5 4.0 4.5
VIN (V)
EV0035_AC01
EV0035 Rev. 1.2
3/30/2006
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
1




EV0035 pdf, 반도체, 판매, 대치품
TM
EV0035 – 6 WHITE LEDs, 20mA PRECISION WLED DRIVER EVALUATION BOARD
QUICK START GUIDE
1. Solder LED1 – LED6 onto the board.
2. Connect VCC to the power source’s positive output.
3. Connect GND to supply ground.
4. Remove the jumper J1 to allow the MP1523 to automatically start when power is applied. Place the
shorting clip across J1 to disable the MP1523. A logic signal may be applied to EN to
enable/disable the MP1523, provided the shorting clip is not installed across J1.
5. To dim the LEDs, remove the shorting clip from J1 and apply a PWM signal to the EN pin. Adjusting
the duty cycle of the PWM signal determines the brightness of the LEDs.
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.
EV0035 Rev. 1.2
3/30/2006
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
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