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EV3385-R-00A 데이터시트(PDF) 7 Page - Monolithic Power Systems

부품명 EV3385-R-00A
상세설명  4 String WLED Controller With I2C Interface Evaluation Board
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제조업체  MPS [Monolithic Power Systems]
홈페이지  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

EV3385-R-00A 데이터시트(HTML) 7 Page - Monolithic Power Systems

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EV3385-R-00A: 4 STRING WHITE LED CONTROLLER WITH I
2C INTERFACE
EV3385-R-00A Rev.1.1
www.MonolithicPower.com
7
5/21/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
QUICK START GUIDE
1. Connect the positive and negative terminals of the power supply (4.5V ~ 33V) to the VIN and GND
pins on the EV board, respectively.
2. Connect the positive and negative terminals of the load panel (4 strings) to the LED+ and LED1~4
pins on the EV board, respectively.
3. Drive EN pin high (>1.5V) to enable the MP3385.
4. If work in external dimming mode, please add PWM input signal to PWM terminal on the EV board.
If work in internal dimming mode, nothing is need for PWM pin.
5. Please connect SCL, SDA and GND of EV board to SCL, SDA and GND of a programmable kit
with I2C interface, respectively.
6. I2C interface setup
External Connection
Please prepare the relative devices and connecting lines before testing, including a computer (PC), a
programmable kit with I2C interface, MP3385 EV board, one USB cable and three connection wires with
plugs. All the devices are ready, complete connection including the three devices shown in the figure 1.
Figure 1—I
2C Interface Connection
Soft Setup
Make sure USB driver installed before running GUI. Then run “MP3385 GUI.exe“ on your PC which
realizes communication with EVB by a programmable kit with I2C interface. See from figure 2, kinds of
buttons, like radio box, slide, and press button allow control register parameters which are only
accessible through the software. Clicking to any button of GUI means to write/read data to /from
register. With the help of GUI, it will be an easy and relax thing to set 0x00-0x06 registers of MP3385.
The GUI shown in figure2 appears by default when running the software. There are mainly 7 parts
included in MP3385’s GUI.
1) BASIC SETTING
2) DIMMING MODE
3) LED CURRENT SOURSE ENABLE
4) Dimming By I2C Interface
5) FAULT DISPLAY
6) ALL REGISTER DISPLAY
7) USB connection judgment


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