Cxtc8921 is a dual channel capacitive touch table lamp control chip, which can control two channels by single touch
Output. The application circuit of cxtc8921 is simple. Only two capacitors and one resistor are needed to realize touch control
Function, convenient processing, low cost, and the use of capacitive detection mode can achieve touch switch and control circuit phase
Isolation, safe and reliable.
Cxtc8921 not only has the simple function of turning on or off the touch switch control, but also has the touch of stepless dimming
Mode, the duty cycle can be 0% to 100% dimming

-
[ CXTC8921 ]"
目录
1.产品概述 2.产品特点 3.应用范围 4.技术规格书下载(PDF文档)
一.产品概述
CXTC8921是一款双通道电容式的触摸台灯控制芯片,可用单键触摸来控制两路输出。CXTC8921应用电路简单,外围仅需两个电容和一个电阻就可以实现触摸控制功能,加工方便、成本低,并且采用电容式检测方式可实现触摸开关与控制电路相
隔离,安全可靠。
CXTC8921不仅具有简单的开启或关闭触摸开关控制功能,还具有无极调光的控触模式,可实现占空比0%到100%的调光。CXTC8921自带一定的负载输出能力,也可以使用外置的NPN或者NMOS实现扩流。CXTC8921还可以与CXLE8627、CXLE8626和CXLE8625结合使用来实现LED的恒流驱动。
CXTC8921采用SOP8封装。
二.产品特点
电源电压:3.0V~6.0V
工作模式:单键触摸控制两通道
无极调光:占空比0%~100%内置上电复位
自带负载输出能力:
IOUT =100mA @6.0V
IOUT =77mA @5.0V
IOUT =43mA @4.0V
三.应用范围
触摸调光台灯
便携式照明设备
四.技术规格书(产品PDF)
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!
五.产品封装图
六.电路原理图
七.相关芯片选择指南
触摸IC | ||||||
产品型号 | 输入电压 | 输出电压 | 输出电流 | 工作效率 | 产品封装 | 备注 |
CXTC8921 | 0.9-6V | 低于输出 | 2A | 90 | SOP-8 | 触摸控制 |