Universal High Brightness LED Driver 非隔离18W LED非隔离驱动电源,CXLE8737高效率LED 驱动控制芯片,开关频率控制外置MOSFET，开关频率最高300KHz,输出驱动电流最大可超过 1A

   产品概述 返回TOPVZy嘉泰姆

The CXLE8737 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 CXLE8737 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. 

CXLE8737 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 CXLE8737 

The CXLE8737provides 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.

   产品特点 返回TOPVZy嘉泰姆

 „ > 90% EfficiencyVZy嘉泰姆

 „ Universal rectified 85 – 265VAC input rangeVZy嘉泰姆

 „ Constant-current LED driverVZy嘉泰姆

 „ Applications from a few mA to more than 1A OutputVZy嘉泰姆

 „ LED string from one to hundreds of diodesVZy嘉泰姆

 „ PWM Low-Frequency Dimming via Enable pinVZy嘉泰姆

 „ Input Voltage Surge ratings up to 500VVZy嘉泰姆

 „ Internal thermal overload protectionVZy嘉泰姆

   应用范围 返回TOPVZy嘉泰姆

„ AC/DC LED Driver applicationsVZy嘉泰姆

 „ RGB Backlighting LED DriverVZy嘉泰姆

 „ Back Lighting of Flat Panel DisplaysVZy嘉泰姆

 „ General purpose constant current sourceVZy嘉泰姆

 „ Signage and Decorative LED LightingVZy嘉泰姆

 „ ChargersVZy嘉泰姆

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