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MBI1804 4-Channel All-Ways-On High-Power LED Driver

Macroblock


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Product Description:
MBI1804 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. At MBI1804 output stage, four regulated current ports are designed to provide uniform and constant current sinks for driving LEDs within a large range of VF variations. With All-Ways-On™, MBI1804 provides users 4-channel constant current ports. Users may adjust the output current from 40 mA up to 240mA through an external resistor, Rext, which gives users flexibility in controlling the light intensity of LEDs.

In addition, users can precisely adjust LED brightness from 0% to 100% via output enable ( ) with Pulse Width Modulation. Additionally, MBI1804 is built with TP (Thermal Protection) function and thermal pad. The TP function protects IC from over temperature (165°C). Also, the thermal pad enhances the power dissipation. As a result, a large amount of current can be handled safely in one package


Product Specifications:
4 constant-current output channels
Constant output current invariant to load voltage change
Maximum output constant current per channel: 240mA
Excellent output current accuracy:
between channels: <±3% (max.), and
between ICs: <±6% (max.)
Output current adjusted through an external resistor
Schmitt trigger input
5V supply voltage
Package type: “Pb-free & Green” package with thermal pad



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