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高性能的LED灯,欢迎讨论!充电输入电压可达22V,充电电流可达2A,LED电流可从0-1A调整.

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发表于 2007-1-1 00:38 | 显示全部楼层 |阅读模式

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<span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: navy;"><font face="Times New Roman"><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: 宋体;">不知道有没有骨灰级的玩家</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: navy;">,</span><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: 宋体;">想做高性能的</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: navy;">LED</span><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: 宋体;">灯</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: navy;">?</span><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: 宋体;">欢迎交流</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: navy;">!</span><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;"><p></p></span></p><p></p><p></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;"><p><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: 宋体;">充电管理电路采用</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: navy;">Linear</span><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: 宋体;">公司的</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: navy;">LTC4002,</span></p></span></p><p><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: 宋体;">充电管理电路采用</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: navy;">Linear</span><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\'; mso-bidi-font-family: 宋体;">公司的</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: navy;">LTC4002,</span></p><p><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: navy;"></span><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;">宽输入电压范围:</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: navy;">4.7V </span><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;">到</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: navy;"> 24V </span></p><p><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: navy;"></span><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;">高达<span lang="EN-US">87% </span>的效率,充电电流可到<span lang="EN-US">2A</span></span></p><p><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;"><span lang="EN-US"></span></span><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;">具<span lang="EN-US">500kHz</span>开关频率的高效电流模式<span lang="EN-US"> PWM </span>控制器</span></p><p><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;"><span lang="EN-US">±1% </span>的充电电压精确度;<span lang="EN-US">5% </span>的充电电流精确度</span></p><p><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;"><span lang="EN-US">C/10 </span>充电电流检测输出<span lang="EN-US">&nbsp;</span></span></p><p><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;"><span lang="EN-US"></span>三小时充电终止定时器</span></p><p><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;">电池温度检测和充电限定资格</span></p><p><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;">采用陶瓷输出电容器时可稳定工作<span lang="EN-US"><p></p></span></span></p><p></p><p></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;"><p>&nbsp;</p></span></p><p>&nbsp;</p><p></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;">LED</span><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;">驱动电路采用<span lang="EN-US">LTC3454,<p></p></span></span></p><p></p><p></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;">该器件可优化从单节锂离子电池输入以高达<span lang="EN-US"> 1A </span>的电流驱动单个大电流白光<span lang="EN-US"> LED</span>。根据输入电压和<span lang="EN-US"> LED </span>最高正向电压的不同,该稳压器自动工作在同步降压、同步升压或降压<span lang="EN-US">-</span>升压模式。这在大电流<span lang="EN-US"> LED </span>应用中尤其重要,因为根据电流值的不同,<span lang="EN-US">LED </span>正向电压可能在<span lang="EN-US"> 2.7V </span>至<span lang="EN-US"> 4.9V </span>的范围内变化。该器件采用专有架构,在整个锂离子电池可用电压范围内(<span lang="EN-US">2.7V </span>至<span lang="EN-US"> 4.2V</span>)实现<span lang="EN-US"> 90% </span>的效率。此外,<span lang="EN-US">LED </span>电流可用两个电流设置电阻和两个使能引脚编程为<span lang="EN-US"> 4 </span>个电流值(包括停机)之一。 <span lang="EN-US"><p></p></span></span></p><p></p><p></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;">LTC3454</span><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;">性能概要: <span lang="EN-US"><p></p></span></span></p><p></p><p></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;">&#8226; 高效率:手电筒模式典型值<span lang="EN-US"> &gt;90%</span>,闪光灯模式<span lang="EN-US"> &gt;80% <p></p></span></span></p><p></p><p></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;">&#8226; 宽<span lang="EN-US"> VIN </span>范围:<span lang="EN-US">2.7V </span>至<span lang="EN-US"> 5.5v <p></p></span></span></p><p></p><p></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;">&#8226; 高达<span lang="EN-US"> 1A </span>的持续输出电流 <span lang="EN-US"><p></p></span></span></p><p></p><p></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;">&#8226;<span lang="EN-US"> 3.5% LED </span>电流编程准确度 <span lang="EN-US"><p></p></span></span></p><p></p><p></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;">&#8226; 内部软启动 <span lang="EN-US"><p></p></span></span></p><p></p><p></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;">&#8226; 开路<span lang="EN-US">/</span>短路<span lang="EN-US"> LED </span>保护 <span lang="EN-US"><p></p></span></span></p><p></p><p></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;">&#8226;<span lang="EN-US">1MHz </span>恒定频率工作 <span lang="EN-US"><p></p></span></span></p><p></p><p></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 9pt; COLOR: navy; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;">&#8226; 停机电流<span lang="EN-US"> &lt;1uA <p></p></span></span></p><p></p><p></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: left; mso-pagination: widow-orphan;"></p></font></span>
[此贴子已经被作者于2006-12-31 16:51:35编辑过]

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 楼主| 发表于 2007-1-1 00:46 | 显示全部楼层

忘了加上图片!

高性能的LED灯,欢迎讨论!充电输入电压可达22V,充电电流可达2A,LED电流可从0-1A调整.

高性能的LED灯,欢迎讨论!充电输入电压可达22V,充电电流可达2A,LED电流可从0-1A调整.
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  • TA的每日心情
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    2014-8-28 01:37
  • 签到天数: 13 天

    [LV.3]偶尔看看II

    发表于 2007-1-4 19:19 | 显示全部楼层
    图片哪里搞的,自己拍的吗?可否放大些[em01]
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    发表于 2007-1-4 20:49 | 显示全部楼层
    降压的没啥意思哦……
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    发表于 2007-1-4 20:51 | 显示全部楼层
    <p>哦,看错了。见笑。</p>
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    发表于 2007-1-9 03:56 | 显示全部楼层
    <p>为什么要骨灰级的人物才能交流</p><p>实际骨灰级的人物现在不是都在潜水就是根本不怎么来了 </p><p></p>
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     楼主| 发表于 2007-1-18 21:11 | 显示全部楼层
    因为这个电路成本蛮高的,所以,一般要求的可能会不合适,另外,这是升降压的,呵呵,现在已经成功用在移动照明产品上了.
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    发表于 2007-1-19 00:24 | 显示全部楼层
    看这个电路的体积,安装在电筒里有些困难吧
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    发表于 2007-3-8 16:21 | 显示全部楼层
    提示: 作者被禁止或删除 内容自动屏蔽
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