TEA1708T数据手册恩XP中文资料规格书

描述 Description

The TEA1708 is an automatic discharge IC for X capacitors with a low power consumption(typically 1 mW at 230 V (AC).
A 500 V clamping circuit is integrated, protecting the IC during mains surges. In a typicalapplication with only two 200 kΩ resistors, the maximum differential mode mains surgevoltage allowed exceeds 6 kV. A metal oxide varistor is not required to protect the IC.
The X capacitor discharge current is internally limited to 2.3 mA. The discharge delaytimer is set externally using a low voltage capacitor.
The very low power consumption in combination with a large discharge current enablesthe use of a large value X capacitor to reduce EMI while retaining the low standby power.

特性 Features

• 1 mW power consumption at 230 V (AC)
• Integrated 500 V clamp; no metal oxide varistor required to protect the IC
• Self supplied, no external bias required
• Discharge current internally limited
• Adjustable discharge delay
• Very high differential surge: 6 kV with two 200 kΩ resistors
• Easier application design, resolving EMI issues while retaining the efficiency level

应用 Application

所有交流电源(X-电容值>100nF)都要求低负载待机功耗