TC7558N datasheet(4/5 Pages) FUMAN

Part #	TC7558N

Description	8-channel LED large-screen scanning blanking control circuit

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Manufacturer	FUMAN [SHENZHEN FUMAN ELECTRONICS CO., LTD.]

Direct Link	http://www.superchip.cn

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4 / 5 page

深圳市富满电子集团股份有限公司

SHEN ZHEN FINE MADE ELECTRONICS GROUP CO., LTD.

TC7558N(文件编号：S&CIC1523)

8 路 LED 大屏幕扫描消隐控制电路

www.superchip.cn

第

4 页共 5 页

Version 1.0

建议应用电路

由于

LED 扫描屏广泛应用于户内显示屏用以降低成本，但起因于 LED 阳极的寄生电容于扫描切换时会瞬间产生放

电路径而造成显示屏发生残影现象；用户可以用具有放电电路功能之

TC7558N 且参照如下图的扫描屏建议应用电

路，并搭配内建有预先充电功能的恒流

IC（如 MBI5124D）,如此即能够完整地消除此上，下行残影现象.

由于

TC7558N 可以透过输入讯号设定内置换行扫描关断周期，故可以与有效避免 LED 灯芯遭反向电压击穿，且

于

LED 发生开短路状况时不会产生串亮现象。

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