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MBI1812 All-Ways-On High-Power LED Driver

Macroblock


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Product Description:
MBI1812 is an instant On/Off LED driver for high power LED applications and exploits PrecisionDrive™ and All-Ways-On™ technology to enhance its output characteristics.

With All-Ways-On™, MBI1812 provides users with 2-channel constant current ports. Users may adjust the individual output current up to 360 mA through external resistors, Rext0 and Rext1, which give users flexibility in controlling the light intensity of LEDs. Also, users can precisely adjust LED brightness from 0% to 100% via output control with Pulse Width Modulation. Alternatively, MBI1812 provides additional two-step current adjustment to make 25% and 50% of the output current via controlling pins, and , to appropriate level.

Additionally, to ensure the system reliability, MBI1812 is built with thermal protection function and thermal pad. When junction temperature reaches 160°C, the output ports will be disabled to protect IC from thermal damage. The output will be activated again once the junction temperature cools down to 130°C. Also, the thermal pad enhances the power dissipation and a large amount of current can be sunk safely with the package.


Product Specifications:
12V supply voltage
2 constant-current output channels
Constant output current invariant to load voltage change
Excellent output current accuracy:
between channels: <±5% (max.), and
between ICs: <±6% (max.)
Maximum output constant current per channel: 360 mA
Thermal protection
Individual output current adjusted through external resistors
25% and 50% of pre-set current adjustment via level setting
Package type: “Pb-free & Green” package with thermal pad



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