Datasheet > SM6704A

SM6704A

更新时间： 2024-11-11 15:51:35

品牌	Logo	应用领域
三合微科 - SAMHOP		/
页数	文件大小	规格书
4页	146K
描述
Interface Circuit

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SM6704A 数据手册

三合微科股份有限公司

SAMHOP Microelectronics Corp.

4-Channel Constant Current LED Driver

SM6704A

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GENERAL DESCRIPTION

The SM6704A is a 4-channel constant current LED Driver that has a wide range of output current from 10mA

up to 180mA per channel and through an external resistor (Rext) to set the maximum sink current which

gives users flexibility in controlling the light intensity of LEDS. In addition, users can precisely adjust LED

brightness from 0% to 100% via OE control pin using popular Pulse Width Modulation (PWM) signal. Low

output voltage drop operation of 0.6V at 180mA allows for more power efficient designs across wider supply

voltage range, The 4 LED pins are compatible with high voltage up to 50V supporting applications with long

strings of LEDS. Additionally, to ensure the system reliability, the SM6704A is contained with LED string short

circuit detection and thermal shutdown function to protect IC from over temperature 150℃. Also, the thermal

pad enhances the power dissipation. As a result, a large amount of current can be handled safely in one

package.

FEATURES

․ Supply voltage range from 9V to 50V

․ 4-channel constant sink current

․ Constant output current invariant to load voltage change

․ Maximum output current per channel up to 180mA

․ Output current adjusted through an external resistor

․ Excellent output current accuracy

- Between channels - ±3% , and

- Between ICs - ±6% (Max.)

․ Protections

Over-temperature (150℃ shutdown IC)

String short circuit detection ( only shutdown short channel when over 5V dropout)

․ Low dropout current source (0.6V at 180mA)

․ LED output voltage up to 50V

․ Package SOP-8 with thermal pad

APPLICATIONS

․ High-flux LED lighting, architectural lighting

․ LCD backlight, LED signs and displays

․ Automotive interior lighting

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