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class="pct"><style type="text/css">.pcb{margin-right:0}</style><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_614587"> 自成立以来，坚持以“为客户提供完整的解决方案” 为己任，以“为客户创造最大价值”为理念，针对客户应用需求设计，使公司<a href="http://b.oecr.com/sell" target="_blank" class="relatedlink">产品</a>极具竞争力，是国内为数不多的可以向客户提供个性化集成<a href="http://electronic.oecr.com" target="_blank" class="relatedlink">电路</a>设计服务及贴身技术支持的公司。<br /> 15889664065 18603078015 QQ：540100618 徐祥<br /> 专为LED灯光控制驱动的恒流带灰度芯片WS2801,并提供性价比极高..<br /> <br /> <br /> 主要应用特点.<br /> RGB三路驱动输出.<br /> 支持恒流／恒压双模式.<br /> 内置1.2MHz振荡器，支持256级PWM输出.<br /> 双线传输结构，需要MCU少量接口.<br /> 简化外围配套，控制简单，可扩充性好.<br /> 信号输出有放大和整形功能,级联能力强.<br /> IC脚位抗击静电能力强,即使简易型工厂生产也不容易被损坏.<br /> 通道间和芯片间温度特性和一致性好,亮度偏差小.<br /> 输出控制电路特征<br /> 采用独特的IN-RUSH电流反馈结构，兼容恒压／恒流双模式.<br /> <br /> 负载电流直接流过采样电阻.<br /> <br /> 直接反馈，采样精度高，一致性好.<br /> <br /> 反馈端接地，可以转为恒压驱动模式输出.<br /> <br /> 简化外围配套、降低使用 成本.扩充性功能强大.<br /> 驱动一个LED时可以设置成恒流，也可以设置成恒压驱动.<br /> <br /> 在灯电压>6V时，可设置成外挂三极管驱动模式恒流恒压模式.<br /> <br /> 在>6V高电压供电环境下，可使用简单的稳压管或电阻分压把供电电压降到合适范围内即可工作.<br /> 输入控制信号频率范围 可以从100KHz到25MHz的宽范围.<br /> <br /> 采用DATA和DCLK两根信号线，减低线材连接成本.<br /> <br /> 输出端极性反转功能，可以用做「PWM 信号产生器」，可以实现 大功率LED 之256 256级灰度控制<br /> <br /> 每级输出时时序上DATA自动与DCLKO逐级对齐，不会随级数累积引起偏移误动作.<br /> <br /> 内置的时钟再生机制，使DCLK不会随级联增多改变占空比.<br /> <br /> 级联信号采用推挽式强驱动电路，级联间距可达8米@2MHZ.</td></tr></table> </div> <div id="comment_614587" class="cm"> </div> <div id="post_rate_div_614587"></div> </div> </div> </td></tr> <tr><td class="plc plm"> <div id="p_btn" class="mtw mbm hm cl"> <a href="http://club.oecr.com/home.php?mod=spacecp&ac=favorite&type=thread&id=96576&formhash=d0850d11" id="k_favorite" onclick="showWindow(this.id, this.href, 'get', 0);" onmouseover="this.title = $('favoritenumber').innerHTML + ' 人收藏'" title="收藏本帖"><i><img src="static/image/common/fav.gif" alt="收藏" />收藏<span id="favoritenumber" style="display:none">0</span></i></a> <a class="followp" 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