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首页 > Products > Led Driver > Non isolated LED Driver >  Non Isolation No PFC >Cxle8383 (b) is a high-precision non isolated step-down LED constant current driver chip with four and three segments as switches. The chip works in the critical continuous
Cxle8383 (b) is a high-precision non isolated step-down LED constant current driver chip with four and three segments as switches. The chip works in the critical continuous

The chip works in the critical continuous and intermittent mode of inductive current, and is suitable for the non isolated step-down LED constant current power supply with the input voltage of 85vac ~ 265vac. Cxle8383 (b) is a four segment dimming product. When the first switch is powered on, the output current will be 100%, the second switch will be 50%, the third switch will be 25%, and the fourth switch will be 12.5%. The dimming of cxle8383 (b) is 100%, 50% and 12.5% respectively. When the switch is closed for more than 5S, the chip will restart to the first power on state of 100% output current. The cxle8383 (b) chip is internally integrated with 500V power switch. The working current of the chip is very low. Without auxiliary winding detection and power supply, only a few peripheral components are needed to achieve excellent constant current characteristics, which greatly saves the system cost and volume. The cxle8383 (b) chip has a high-precision current sampling circuit to achieve high-precision LED constant current output and excellent line voltage regulation

Cxle8383 (b) is a high-precision non isolated step-down LED constant current driver chip with four and three segments as switches. The chip works in the critical continuous
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CXLE8383(B)是一款高精度非隔离降压型四段和三段作开关分段调光LED恒流驱动芯片。芯片 工作在电感电流临界连续和断续模式,适用于85Vac~265Vac全范围输入电压的非隔离降压型LED恒流电源。 CXLE8383(B)为四段调光产品,第一次开关上电输出电流时100%,第二次开关输出电流则变为50%,第 三次开关输出电流变为25%,第四次开关则变为12.5% 。CXLE8383(B)段调光则分别为100%, 50%,12.5%。当开关关闭的时间超过 5S,再次加电时芯片就会重启到第一次上电100%输出电流状态。 CXLE8383(B)芯片内部集成500V功率开关,芯片的工作电流极低,无需辅助绕组检测和供电, 只需要很少的外围元件,即可实现优异的恒流特性,极大的节约了系统成本和体积。CXLE8383(B)芯片内带有高精度的电流采样电路,实现高精度的LED恒流输出和优异的线电压 调整率,输出电流不随电感量和LED工作电压的变化而变化,实现优异的负载调整率。 CXLE8383(B)具有多重保护功能,包括 LED 开路/短路保护,ISEN 电阻短路保护,欠压保护, 芯片温度过热调节等。CXLE8383(B)采用 SOP-8/DIP-7 封装。

   产品特点 返回TOPDTw嘉泰姆


· 四段、三段调光二种规格可选 DTw嘉泰姆

· 内部集成500V 功率管 DTw嘉泰姆

· 无需辅助绕组检测和供电 DTw嘉泰姆

· 芯片超低工作电流 · 宽输入电压 DTw嘉泰姆

· LED开路保护 DTw嘉泰姆

· LED短路保护 DTw嘉泰姆

· ISEN电阻短路保护 DTw嘉泰姆

· 芯片供电欠压保护 DTw嘉泰姆

· 过热调节功能DTw嘉泰姆

   应用范围 返回TOPDTw嘉泰姆


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