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LED电源驱动IC,SMD802

价 格: 1.90

品牌/商标 芯瑞 型号/规格 SMD802
封装 SOP-8 批号 1106
类型 驱动IC

> 90% Efficiency

Universal rectified 85 – 265VAC input range

Constant-current LED driver

Applications from a few mA to more than 1A Output

LED string from one to hundreds of diodes

PWM Low-Frequency Dimming via Enable pin

Input Voltage Surge ratings up to 500V

Internal thermal overload protection

Tolerance of CS pin voltage is +/-5%
The SMD802 is a PWM high-efficiency LED driver control IC. It allows efficient operation of High Brightness (HB) LEDs from voltage sources ranging from 85VAC up to 265VAC. The SMD802 controls an external MOSFET at fixed switching frequency up to 300kHz. The frequency can be programmed using a single external resistor. The LED string is driven at constant current rather than constant voltage, thus providing constant light output and enhanced reliability. The output current can be programmed between a few milliamps and up to more than 1.0A.
SMD802 uses a rugged high voltage junction isolated process that can withstand an input voltage surge of up to 500V. Output current to an LED string can be programmed to any value between zero and its maximum value by applying an external control voltage at the linear dimming control input of the SMD802. The SMD802 provides a low-frequency PWM dimming input that can accept an external control signal with a duty ratio of 0-100% and a frequency of up to a few kilohertz.

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