60VIN/120VOUT Dual LED Controller with Exponential PWM and Scalable Dimming

DESCRIPTION The LT®8355-1 a dual-channel DC/DC controller designed to drive two strings of high current LEDs. The fixed frequency, current mode architecture results in stable operation over a wide range of supply and output voltages. Voltage feedback pins serve as the inputs for several LED

文件：2.44769 Mbytes 页数：30 Pages

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60VIN/120VOUT Dual LED Controller with Exponential PWM and Scalable Dimming

FEATURES - Two independent High Voltage LED Driver Controllers Channels 128:1 Internal Exponential PWM Dimming - Two-Pin Multiplying Analog Dimming (CH2) - Spread Spectrum Frequency Modulation - 20,000:1 External PWM Dimming at 100Hz - Rail-to-Rail LED Current Sensing: 0V to 120V - ±2 LED

文件：4.33304 Mbytes 页数：31 Pages

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具有指数PWM和可扩展调光的100VIN/120VOUT LED控制器

LT8356-1是一款DC/DC控制器，专为驱动大电流LED而设计。固定频率、电流模式架构可在宽电源和输出电压范围内稳定工作。电压反馈引脚充当多个LED保护功能的输入，使得转换器可以作为恒压源运行。LT8356-1可以实现升压、升压至电池、降压模式、SEPIC和反激式LED驱动器。\n\n LT8356-1在负载的高端或低端检测输出电流。CTRL和IADJ输入的乘积提供了输出电流的模拟编程。PWM输入和PWMTG高端PMOS驱动器提供基于时间的精确LED调光能力。由外部数字信号驱动时，PWM输入在100Hz时提供高达20000:1的LED调光比。由恒定电压驱动时，PWM输入从128个 • 128:1 内部指数 PWM 调光\n\n• 两引脚乘法模拟调光\n\n• 内部展频 (SSFM)\n\n• 20000:1 100Hz 外部 PWM 调光\n\n• 轨至轨 LED 电流检测：0V 至 120V\n\n• ±2% LED 电流调节\n\n• ±2% 输出电压调节\n\n• LED 短路/断路保护和指示\n\n• 宽输入电压范围 (5V 至 100V);

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28-SOIC

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