OC5265B 65V,1.2A 高端电流检测降压LED恒流驱动器
■OC5265B是一款连续电感电流导通模式的降压型LED恒流驱动器,用于驱动一个或多个LED灯串。OC5265B工作电压从4.8v到65v,提供可调的输出电流,最大输出电流可达到1.2A。根据不同的输入电压和外部器件,OC5265B可以驱动供高达数十瓦的LED。
■OC5265B内置功率开关,采用高端电流检测电路,以及兼容PWM和模拟调光的调光脚DIM。当DIM脚电压低于0.3v时输出关断,进入待机状态。
■OC5265B内置过温保护电路,当芯片达到过温保护点进入过温保护模式,输出电流逐渐下降以提高系统可靠性。
■OC5265B采用专利的电路架构使得在低压差工作时输出电流无过冲,提高LED工作寿命,OC5265B采用专利的恒流电路具有优异的负载调整率和线性调整率。
■OC5265B增加了低端过流保护功能,在出现续流二极管短路情况下可保护芯片不损坏。
■OC5265B采用SOT89-5封装。
●特点
■最大输出电流:1.2A
■高效率:96%
■优异的负载调整率和线性调整率
■高端电流检测
■最大辉度控制频率:20KHz
■滞环控制,无需环路补偿
■最高工作频率:1MHz
■电流精度:±5%
■宽输入电压:4.8V~65V
■智能过温保护
■低压差无过冲
Datasheet |
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Please see the document for details |
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SOT89-5 |
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English Chinese Chinese and English Japanese |
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2022/8/22 |
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OC5265B_DS02CN |
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917 KB |
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