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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關鍵特性
- 4 LEDs at 30mA Each for Main Display
- 3 LEDs at 30mA Each for Sub or RGB
- 400mA Total for Flash
- 5-Bit (32-Step) Linear Dimming
- 32k Colors
- Ramp-Up/Down Rates
MAX8879應用/使用
蜂窩電話與智能電話
LED顯示器，多達11個LED
PDA、數碼相機、便攜式攝像機
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