Product information query
Products News
首页 > Products > Led Driver > LED Driver Chip > Stepless Dimming Chip >Cxle8732 is an efficient LED driver and control chip designed with PWM (PFM) technology It adopts unique anti-interference technology to make LED brightness more stable CMOS process design is adopted
Cxle8732 is an efficient LED driver and control chip designed with PWM (PFM) technology It adopts unique anti-interference technology to make LED brightness more stable CMOS process design is adopted

undervoltage protection, temperature protection, inductor saturation protection, RC oscillator, dimming controller, system controller and output driver. Drive high brightness LED efficiently in the range of input voltage 8vdc to 40VDC.
Cxle8732 regulates the working frequency of the system (up to 500KHz) by setting the external resistance of the ROSC pin (PWM grounding, PFM is connected to gate); the external high brightness LED is driven in series through constant current mode to maintain the brightness of the LED and improve the reliability of the LED, and the constant current value is set by the external resistance of the CS terminal.

Cxle8732 is an efficient LED driver and control chip designed with PWM (PFM) technology It adopts unique anti-interference technology to make LED brightness more stable CMOS process design is adopted
Manual
Ordering

Ordering

Product introduction

目录

   产品概述 返回TOPUox嘉泰姆


         CXLE8732是采用PWM(PFM)技术设计的高效LED驱动控制芯片,采用了独有的抗干扰技术,使LED亮度更稳定。采用CMOS工艺设计,集成了内置稳压器,欠压保护,温度保护,电感饱和保护,RC振荡器,调光控制器,系统控制器和输出驱动等模块。在输入电压8VDC到40VDC范围内高效驱动高亮度LED。

CXLE8732通过设置 ROSC 管脚的外接电阻(PWM 接地,PFM 是接 GATE)来调节系统的工作频率(高达 500kHz); 外部高亮度 LED 串通过恒流方式驱动,以保持 LED 亮度并提高 LED 的可靠性,其恒流值通过 CS 端的外接电 阻来设定。 

CXLE8732以通过 PWMD 端输入的 PWM 信号来调节 LED 亮度,也可以通过该端口输入的直流电压来线性调 节 LED 亮度,该端还兼做使能端,及软启动功能。 CXLE8732压(VDD 端)高于 VUVLO时,GATE 端可以输出高电平,此时CXLE8732过限制外部功率管峰值电流 的方式工作。外部电流采样电阻与功率管的源极相连,当外部采样电阻的电压值超过设定值(内部设定为 210mv,也可通过 PWMD 外部设定)时,关断外部功率管。如果客户希望系统软启动,可在 PWMD 端到地接个 电容使该端电压按期望的速率上升,进而控制 LED 电流缓慢上升。 

CXLE8732用于低压高亮度 LED 照明,特别适用于 12Vac/12Vdc 的应用场合

   产品特点 返回TOPUox嘉泰姆


 效率高达 90%以上 Uox嘉泰姆

 恒流驱动 LED Uox嘉泰姆

 可以驱动多个 LED 串 Uox嘉泰姆

 外部 PWM 调光 Uox嘉泰姆

 外部线性调光 Uox嘉泰姆

 外部使能 Uox嘉泰姆

 软启动 Uox嘉泰姆

 启动电压低 Uox嘉泰姆

 欠压保护,温度保护,电感饱和保护 Uox嘉泰姆

 LED 开路保护 Uox嘉泰姆

 外围元件少 Uox嘉泰姆

 工作温度:-40 ~ 85℃ Uox嘉泰姆

 封装,SOP8Uox嘉泰姆

   应用范围 返回TOPUox嘉泰姆


 MR16(11) LED 射灯代替卤素灯 Uox嘉泰姆

 车载 LED 灯 Uox嘉泰姆

 LED 路灯 Uox嘉泰姆

 LED 信号灯 Uox嘉泰姆

 太阳能 LED 灯Uox嘉泰姆

   技术规格书(产品PDF) 返回TOP Uox嘉泰姆


     需要详细的PDF规格书请扫一扫微信联系我们,还可以获得免费样品以及技术支持!Uox嘉泰姆

 QQ截图20160419174301.jpgUox嘉泰姆

产品封装图 返回TOPUox嘉泰姆


blob.pngblob.pngUox嘉泰姆

电路原理图 返回TOPUox嘉泰姆


blob.pngUox嘉泰姆

相关芯片选择指南 返回TOP                             更多同类产品......


LED车灯驱动IC
 型号 工作电压范围 输出电流 输出电流精度 效率  工作频率  封装
CXLE8728 24V--80V 0.5A 2% 96% 80KHz SOP-8
CXLE8729 24V--100V 0.5A 2% 95% 127KHz SOP-8
CXLE8730 10V--75V 0.5A/可PWM数字/模拟调光 2% 96%   SOP-8
CXLE8731 8V--100V 1.3A/13W/可PWM数字/模拟调光 2% 90% 500KHz ESOP-8
CXLE8732 8V--100V 扩流2A/50W/可PWM数字/模拟调光 2% 90% 500KHz SOP-8
CXLE8733 24V--80V 1A 2% 96% 70KHz TO252-5L
CXLE8734 12V--80V  1A 2% 98% 80KHz TO263-5L