MBI1804中文资料All-Ways-OnTM 高功率LED驱动芯片数据手册Macroblock规格书

描述 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 (/OE) with Pulse Width Modulation.
 
Additionally, to ensure the system reliability, 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.

特性 Features

·01 No. of Output Channel ：4
·02 Max. Sustaining Voltage ：17V
·03 Constant Output Current Per Channel ：240mA(max.)
·04 Output Current Accuracy-between channels ： <±1% (typ.)
·05 Output Current Accuracy-between ICs ：<±6% (max.)
·06 Supply Voltage ：5V
·07 Dimming Method ：Digital
·08 Thermal Protection ：YES
·09 Constant Output Current Invariant to Load Voltage Change ：YES
·10 Adjusted Output Current ：through an external resistor
·11 Schmitt Trigger Input ：N/A
·12 RoHS Compliant Package ：SOP8
·13 Technology ：All-Ways-On™
·14 Applications ：灯条
·15 Major Feature ：Digital Dimming /Thermal Shutdown