MAX8879 用于背光/闪光灯/RGB LED驱动的安全定
max8879 用于背光/闪光灯/rgb led驱动的安全定时器
max8879概述
the max8879 features an internally trimmed reference to set the maximum led current. an i²c serial port is used for on/off control and setting the led currents in 32 linear steps for main, sub/rgb, and movie. when using the rgb indicator, the i²c port provides 32k colors and programmable ramp-up/down rates. the camera flash for flash-mode operation is enabled by an active-low signal on the active-low fsh pin. a safety timer is activated on the falling edge of active-low fsh, which has an i²c-adjustable (programmable) period of no timer, 0.5s, 1.0s, or 2.0s (default). if the safety timer period expires, both flash and movie modes are disabled.
max8879关键特性
guaranteed 610ma continuous drive capability 4 leds at 30ma each for main display 3 leds at 30ma each for sub or rgb 400ma total for flash 2-wire i²c serial port 5-bit (32-step) linear dimming 32k colors ramp-up/down rates 92% peak/83% avg efficiency (pled/pbatt) adaptive 1x/1.5x/2x mode switchover 0.3% (typ) led current accuracy and matching low input ripple and emi low 0.1µa shutdown current output overvoltage protection i²c programmable flash safety timer thermal derating function protects leds 24-pin, 4mm x 4mm thin qfn package
max8879应用/使用
蜂窝电话与智能电话
led显示器，多达11个led
pda、数码相机、便携式摄像机
max8879 pdf datasheet
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MAX8879 用于背光/闪光灯/RGB LED驱动的安全定
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max8879概述
the max8879 features an internally trimmed reference to set the maximum led current. an i²c serial port is used for on/off control and setting the led currents in 32 linear steps for main, sub/rgb, and movie. when using the rgb indicator, the i²c port provides 32k colors and programmable ramp-up/down rates. the camera flash for flash-mode operation is enabled by an active-low signal on the active-low fsh pin. a safety timer is activated on the falling edge of active-low fsh, which has an i²c-adjustable (programmable) period of no timer, 0.5s, 1.0s, or 2.0s (default). if the safety timer period expires, both flash and movie modes are disabled.
max8879关键特性
guaranteed 610ma continuous drive capability 4 leds at 30ma each for main display 3 leds at 30ma each for sub or rgb 400ma total for flash 2-wire i²c serial port 5-bit (32-step) linear dimming 32k colors ramp-up/down rates 92% peak/83% avg efficiency (pled/pbatt) adaptive 1x/1.5x/2x mode switchover 0.3% (typ) led current accuracy and matching low input ripple and emi low 0.1µa shutdown current output overvoltage protection i²c programmable flash safety timer thermal derating function protects leds 24-pin, 4mm x 4mm thin qfn package
max8879应用/使用
蜂窝电话与智能电话
led显示器，多达11个led
pda、数码相机、便携式摄像机
max8879 pdf datasheet
Google母公司Alphabet成立独立的自驾车公司Waymo
发言嘉宾&参会阵容公布，2019汽车激光雷达技术交流会重磅议题
英特尔重推酷睿 i9处理器 首次面向笔记本电脑
荣耀v9和小米6哪个好?荣耀v9和小米6评测对比
拼多多教美国人做电商 美国新生代电商怎么学习“中国经验”？
MAX8879 用于背光/闪光灯/RGB LED驱动的安全定
华为云云耀云服务器实例 L：为企业提供安全可靠的轻量应用服务器架构
Apple One提供了一种选项来帮助用户管理iCloud存储的多个Apple ID
pcb蚀刻是什么意思
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推荐几款原装快充充电器数据线，告别手机龟速慢充
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适用于运动传感器信号放大的运算放大器上市
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人工智能大潮，为什么赢家是英伟达？
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能耗管理云平台的详细介绍
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