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MBI5038 is an enhanced 16-channel constant current LED sink driver with advanced error detection functions and the smart power-saving mode.
MBI5038 provides “compulsory silent error detection”. Once the dedicated command is issued, all of the current output ports will be turned on in about 700ns interval with small current. The image will not be impacted since the turn-on duration and current are so small. MBI5038 may detect all of the current output ports and report the LED error status without comparing original data. Moreover, the settable threshold voltages for short-circuit detection and leakage diagnosis may comply with the variation of different LED forward voltage. Additionally, to ensure the system reliability, MBI5038 is built with thermal error flag to prevent IC from over temperature (160°C).
MBI5038 also features the power saving mode: 0-Power mode. This mode reduces IDD of MBI5038 to 150uA to save the power. For the power saving purposes, MBI5038 is especially designed to save the supply current of LED drivers when most LEDs on LED traffic signs and message signs are usually turned off.
In addition, MBI5038 also allows users to adjust the output current level by setting a programmable configuration code. The code is sent into MBI5038 via the pin SDI. The falling edge of LE would latch the code in the shift register into a built-in 16-bit configuration register, instead of the output latch. The gain code would affect the voltage at the terminal REXTand control the output current regulator. The output current can be adjusted finely by a gain ranging from 12.5% to 200% in 64 steps.
MBI5038 产品规格
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ItemsSpec.Content
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01输出通道数16
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02每通道输出电流值3~45mA
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03输出管脚耐压17V
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04输出电流精确度-通道间<±1.5% (typ.)
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05输出电流精确度-IC间<±1.5% (typ.)
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06错误侦测-LED开路
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07错误侦测-LED短路
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08错误侦测-漏电流
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09电流增益
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10省电功能
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11RoHS环保封装SOP24
SSOP24 -
12主要应用室内外LED彩屏、讯息广告牌、交通屏
