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

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

100VIN、100VOUT LED 控制器

LT®3756、LT3756-1和 LT3756-2 是 DC/DC 控制器，专为充当一个用于驱动高电流 LED 的恒定电流源而设计。它们从一个内部已调 7.15V 电源来驱动一个低端外部 N 沟道功率 MOSFET。固定频率、电流模式架构在一个很宽的电源和输出电压范围内实现了稳定操作。一个参考于地电压 FB 引脚用作多个 LED 保护功能电路的输入，而且还使转换器能够起一个恒定电压源的作用。一个频率调节引脚允许用户在 100kHz 至 1MHz 的范围内设置频率，旨在优化效率、性能或外部元件尺寸。\n\n LT3756/LT3756-1/LT3756-2 在 LED 串的高端检测输 • 3000:1 True Color PWM™ 调光\n\n• 宽输入电压范围：6V 至 100V\n\n• 输出电压高达 100V\n\n• 恒定电流和恒定电压调节\n\n• 100mV 高端电流检测\n\n• 可以采用升压、降压模式、降压-升压模式、SEPIC 或反激式拓扑结构来驱动 LED\n\n• 可调频率范围：100kHz 至 1MHz\n\n• 开路 LED 保护\n\n• 具迟滞的可编程欠压闭锁;

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