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MBI1009 is a 3-channel current sink driver for RGB LED lamps. It is easy to be designed in applications that need mixing RGB light sources for multi-color output. MBI1009 contains a serial buffer and data latches which convert serial input data into parallel output format. At MBI1009 output stage, three regulated current ports are designed to provide uniform and constant current sinks for driving LEDs within a large range of Vf variations. The output current is determined by an external resistor and the brightness control code, both set by users.

MBI1009 provides users with great flexibility and device performance. Users may adjust the output current from 5 mA to 40 mA, which gives users flexibility in controlling the light intensity of LEDs. MBI1009 guarantees to endure maximum 17V at the output port.

3 output channels for RGB LED lamps
Output current invariant to load voltage change
Programmable output current for each channel
Built-in brightness control
Constant output current range: 5 - 40mA
Output current accuracy:
between channels: <±5% (max.), and
between ICs: <±12% (max.)
3 ~ 5.5V supply voltage
 
Multi-color (Color-variable) LED backlight for portable devices
Keypad backlighting
Push-button backlighting
 
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