Energy saving string

DMX512A-PF串联DMX解码驱动芯片

产品简介（DMX512A-PF）

     DMX512PF是单线传输三通LED驱动控制专用芯片,采用DMX512(1990)通信协议。芯片内含电源稳压电路,信号解码模块，数据缓存器,内置恒流电路,用户通过调节REXT管脚外接电阻调整恒流输出的PFM电流,也可通过外接电阻调节其他的电流值,输出驱动采用专利SPFM 技术,以及内置振荡器,支持输出端极性反转。

Description（DMX512A-PF）:

DMX512PF is one chip with PFM, signal analysis and driving function, the data format follows the DMX512(1990) agreement. This chip is specially designed for LED lighting and decoration use. This chip is built in with clock circuit, decodemodule, buffer storage,3 channels constant flow driver (the electric current can be controlled by the resistance set outside) together with the Oscillator who make the PFM works.

产品特点（DMX512A-PF）：

◆ RGB输出端口耐压：25V

◆ 内置电源稳压电路，外部电源范围：5V～24V

◆ DAI端口耐压：12V

◆ 信号传输速率：250-500kbps

◆ 最大恒流输出：60ma

◆ 专利PFM输出,灰度等级：256级

◆ 单信号线级联传输

◆ 具备信号修复功能，最大支持170/512个像素点的串接

◆ 兼容并扩展DMX512(1990)协议信号

◆ 封装形式：SOP8

◆ PDmax：0.25W

◆ HBM ESD>4KV

Specialty（DMX512A-PF）:

◆ The max RGB output support voltage：25V

◆ With built-in LDO, Supply voltage：5V～24V

◆ DAI supply voltage：5V

◆ One signal cable,signal transmission speed：250kbps

◆ The max constant current support：60mA(19ma tacitly approve)

◆ Regulable linearity PFM electric current output：256 scale

◆ Signal cable Wiring：Single signal cable in series connection(TTL)

◆ Max loading capacity: Max 170/512 chips in series connection.

◆ Data Format: DMX512(1990) agreement

◆ Package：SOP8

◆ PDmax：0.25W

◆ HBM ESD>4KV

产品用途（DMX512A-PF）：

LED装饰与照明/户内/户外LED显视屏

Application（DMX512A-PF）:

LED decoration and illumination

Indoor/outdoor LED display

产品速度对比（2013年8月）：

DMX512AP-N：250K-750K

DMX512AP：250K-450K

DMX512A-W：250K

DMX512A-PF：250-500K

DMX512A-PF应用原理图：