MBI1812数据手册Macroblock中文资料规格书

描述 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,  /OE1 and /OE2 , 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.

特性 Features

·01 No. of Output Channel ：2
·02 Max. Sustaining Voltage ：17V
·03 Constant Output Current Per Channel ：360mA(max.)
·04 Output Current Accuracy-between channels ： <±3% (typ.)
·05 Output Current Accuracy-between ICs ：<±6% (max.)
·06 Supply Voltage ：12V
·07 Dimming Method ：Analog
·08 Thermal Detection ：
·09 Thermal Protection ：YES
·10 Constant Output Current Invariant to Load Voltage Change ：YES
·11 Adjusted Output Current ：25% and 50% of pre-set current adjustment via /OE level setting
·12 Schmitt Trigger Input ：N/A
·13 Staggered Delay of Output ：N/A
·14 RoHS Compliant Package ：SOP8
·15 Technology ：All-Ways-On™
·16 Applications ：灯条
·17 Major Feature ：Analog Dimming /Thermal Shutdown