OC5266B 65V高端电流检测降压LED恒流驱动器
◆OC5266B是内置功率MOS，同时可支持外扩驱动NMOS的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。OC5266B工作电压从4.8V到65V，提供可调的输出电流，内置MOS最大1.5A输出。
◆OC5266B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。
◆OC5266B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。
◆OC5266B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，OC5266B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。
◆OC5266B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。
◆OC5266B采用ESOP8封装。
■特点
◆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
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Datasheet |
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Please see the document for details |
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ESOP8 |
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English Chinese Chinese and English Japanese |
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2022/11/4 |
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OC5266B_DS02CN |
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1.2 MB |
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