{"id":849,"date":"2018-09-08T01:20:18","date_gmt":"2018-09-08T01:20:18","guid":{"rendered":""},"modified":"2018-09-08T09:19:56","modified_gmt":"2018-09-08T01:19:56","slug":"tl431%e5%87%a0%e7%a7%8d%e6%9c%80%e6%99%ae%e9%81%8d%e7%9a%84%e7%94%a8%e6%b3%95","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=849","title":{"rendered":"TL431\u51e0\u79cd\u6700\u666e\u904d\u7684\u7528\u6cd5"},"content":{"rendered":"<table border=\"0\" cellpadding=\"0\" cellspacing=\"0\" id=\"pid4859\" style=\"word-wrap: break-word; empty-cells: show; border-collapse: collapse; border-spacing: 0px; color: rgb(68, 68, 68); font-family: &quot;Helvetica Neue&quot;, Helvetica, Arial, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;WenQuanYi Micro Hei&quot;, &quot;Microsoft Yahei&quot;, sans-serif; width: 1361px;\" summary=\"pid4859\">\n<tbody style=\"word-wrap: break-word;\">\n<tr style=\"word-wrap: break-word;\">\n<td style=\"word-wrap: break-word; margin: 0px; padding: 0px;\">\n<table border=\"0\" cellpadding=\"0\" cellspacing=\"0\" style=\"word-wrap: break-word; empty-cells: show; border-collapse: collapse; border-spacing: 0px;\" width=\"100%\">\n<tbody style=\"word-wrap: break-word;\">\n<tr style=\"word-wrap: break-word;\">\n<td class=\"c\" style=\"word-wrap: break-word; margin: 0px; padding: 0px;\">\n<div class=\"ctn\" id=\"tips_content_4859\" style=\"word-wrap: break-word; margin: 0px; padding: 20px 20px 10px; font-size: 14px; color: rgb(51, 51, 51); word-break: break-all;\">\n<table cellpadding=\"0\" cellspacing=\"0\" style=\"word-wrap: break-word; empty-cells: show; border-collapse: collapse; border-spacing: 0px;\" width=\"100%\">\n<tbody style=\"word-wrap: break-word;\">\n<tr style=\"word-wrap: break-word;\">\n<td class=\"t_f\" id=\"postmessage_4859\" style=\"word-wrap: break-word; margin: 0px; padding: 0px;\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tTL431\u4f5c\u4e3a\u4e00\u4e2a\u9ad8\u6027\u4ef7\u6bd4\u7684\u5e38\u7528\u5206\u6d41\u5f0f\u7535\u538b\u57fa\u51c6\uff0c\u6709\u5f88\u5e7f\u6cdb\u7684\u7528\u9014\u3002\u8fd9\u91cc\u7b80\u5355\u4ecb\u7ecd\u4e00\u4e0bTL431\u5e38\u89c1\u7684\u548c\u4e0d\u5e38\u89c1\u7684\u51e0\u79cd\u63a5\u6cd5\u3002<br style=\"word-wrap: break-word;\" \/><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\u56fe(1)\u662fTL431\u7684\u5178\u578b\u63a5\u6cd5\uff0c\u8f93\u51fa\u4e00\u4e2a\u56fa\u5b9a\u7535\u538b\u503c\uff0c\u8ba1\u7b97\u516c\u5f0f\u662f\uff1a Vout = (R1+R2)*2.5\/R2\uff0c<br style=\"word-wrap: break-word;\" \/><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\u540c\u65f6R3\u7684\u6570\u503c\u5e94\u8be5\u6ee1\u8db31mA &lt; (Vcc-Vout)\/R3 &lt; 500mA<br style=\"word-wrap: break-word;\" \/><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<br style=\"word-wrap: break-word;\" \/><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" alt=\"\" border=\"0\" class=\"zoom\" height=\"343\" id=\"aimg_w0ua4\" src=\"http:\/\/www.szryc.com\/uploads\/allimg\/180908\/09195C155-0.jpg\" style=\"word-wrap: break-word; border: none; cursor: pointer;\" width=\"566\" \/><br style=\"word-wrap: break-word;\" \/><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\u5f53R1\u53d6\u503c\u4e3a0\u7684\u65f6\u5019\uff0cR2\u53ef\u4ee5\u7701\u7565\uff0c\u8fd9\u65f6\u5019\u7535\u8def\u53d8\u6210\u56fe(2)\u7684\u5f62\u5f0f\uff0cTL431\u5728\u8fd9\u91cc\u76f8\u5f53\u4e8e\u4e00\u4e2a2.5V\u7a33\u538b\u7ba1\u3002<br style=\"word-wrap: break-word;\" \/><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\u5229\u7528TL431\u8fd8\u53ef\u4ee5\u7ec4\u6210\u9274\u5e45\u5668\uff0c\u5982\u56fe(3)\uff0c\u8fd9\u4e2a\u7535\u8def\u5728\u8f93\u5165\u7535\u538b Vin &lt; (R1+R2)*2.5\/R2 \u7684\u65f6\u5019\u8f93\u51faVout\u4e3a\u9ad8\u7535\u5e73\uff0c\u53cd\u4e4b\u8f93\u51fa\u63a5\u8fd12V\u7684\u7535\u5e73\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\u5f53Vin\u5728(R1+R2)*2.5\/R2\u9644\u8fd1\u4ee5\u5fae\u5c0f\u5e45\u5ea6\u6ce2\u52a8\u7684\u65f6\u5019\uff0c\u7535\u8def\u4f1a\u8f93\u51fa\u4e0d\u7a33\u5b9a\u7684\u503c\u3002<br style=\"word-wrap: break-word;\" \/><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<br style=\"word-wrap: break-word;\" \/><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<br style=\"word-wrap: break-word;\" \/><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" alt=\"\" border=\"0\" class=\"zoom\" height=\"396\" id=\"aimg_Xt22j\" src=\"http:\/\/www.szryc.com\/uploads\/allimg\/180908\/0919562D6-1.jpg\" style=\"word-wrap: break-word; border: none; cursor: pointer;\" width=\"600\" \/><br style=\"word-wrap: break-word;\" \/><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\tTL431\u53ef\u4ee5\u7528\u6765\u63d0\u5347\u4e00\u4e2a\u8fd1\u5730\u7535\u538b\uff0c\u5e76\u4e14\u5c06\u5176\u53cd\u76f8\u3002\u5982\u56fe(4)\uff0c\u8f93\u51fa\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a Vout = ( (R1+R2)*2.5 - R1*Vin )\/R2<br style=\"word-wrap: break-word;\" \/><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\u7279\u522b\u7684\uff0c\u5f53R1 = R2\u7684\u65f6\u5019\uff0cVout = 5 - Vin\u3002\u8fd9\u4e2a\u7535\u8def\u53ef\u4ee5\u7528\u6765\u628a\u4e00\u4e2a\u63a5\u8fd1\u5730\u7684\u7535\u538b\u63d0\u5347\u5230\u4e00\u4e2a\u53ef\u4ee5\u9884\u5148\u8bbe\u5b9a\u7684\u8303\u56f4\u5185\uff0c\u552f\u4e00\u9700\u8981\u6ce8\u610f\u7684\u662fTL431\u7684\u8f93\u51fa\u8303\u56f4\u4e0d\u662f\u6ee1\u5e45\u7684\u3002<br style=\"word-wrap: break-word;\" \/><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<br style=\"word-wrap: break-word;\" \/><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\tTL431\u81ea\u8eab\u6709\u76f8\u5f53\u9ad8\u7684\u589e\u76ca\uff08\u6211\u5728\u4eff\u771f\u4e2d\u7c97\u7565\u6d4b\u8bd5\uff0c\u6709\u5927\u698246db\uff09\uff0c\u6240\u4ee5\u53ef\u4ee5\u7528\u4f5c\u653e\u5927\u5668\u3002<br style=\"word-wrap: break-word;\" \/><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\u56fe(5)\u663e\u793a\u4e86\u4e00\u4e2a\u7528TL431\u7ec4\u6210\u7684\u76f4\u6d41\u7535\u538b\u653e\u5927\u5668\uff0c\u8fd9\u4e2a\u7535\u8def\u7684\u653e\u5927\u500d\u6570\u7531R1\u548cRin\u51b3\u5b9a\uff0c\u76f8\u5f53\u4e8e\u8fd0\u653e\u7684\u8d1f\u53cd\u9988\u56de\u8def\uff0c\u800c\u5176\u9759\u6001\u8f93\u51fa\u7535\u538b\u7531R1\u548cR2\u51b3\u5b9a\u3002<br style=\"word-wrap: break-word;\" \/><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\u8fd9\u4e2a\u7535\u8def\u7684\u4f18\u70b9\u5728\u4e8e\uff0c\u5b83\u7ed3\u6784\u7b80\u5355\uff0c\u7cbe\u5ea6\u4e5f\u4e0d\u9519\uff0c\u80fd\u591f\u63d0\u4f9b\u7a33\u5b9a\u7684\u9759\u6001\u7279\u6027\u3002\u7f3a\u70b9\u662f\u8f93\u5165\u963b\u6297\u8f83\u5c0f\uff0cVout\u7684\u6446\u5e45\u6709\u9650\u3002<br style=\"word-wrap: break-word;\" \/><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<br style=\"word-wrap: break-word;\" \/><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" alt=\"\" border=\"0\" class=\"zoom\" height=\"348\" id=\"aimg_Qh9HK\" src=\"http:\/\/www.szryc.com\/uploads\/allimg\/180908\/0919562206-2.jpg\" style=\"word-wrap: break-word; border: none; cursor: pointer;\" width=\"580\" \/><br style=\"word-wrap: break-word;\" \/><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\u56fe(6)\u662f\u4ea4\u6d41\u653e\u5927\u5668\uff0c\u8fd9\u4e2a\u7ed3\u6784\u548c\u76f4\u6d41\u653e\u5927\u5668\u5f88\u76f8\u4f3c\uff0c\u800c\u4e14\u5177\u6709\u540c\u6837\u7684\u4f18\u7f3a\u70b9\u3002\u6211\u6b63\u5728\u5c1d\u8bd5\u7528\u8fd9\u4e2a\u653e\u5927\u5668\u4ee3\u66ff\u6b21\u7ea7\u8fd0\u653e\u6765\u653e\u5927\u70ed\u91ca\u7ea2\u5916\u4f20\u611f\u5668\u7684\u8f93\u51fa\u4fe1\u53f7\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"mtw mbm hm cl\" id=\"p_btn\" style=\"word-wrap: break-word; margin-top: 20px !important; margin-right: 0px; margin-bottom: 10px !important; margin-left: 0px; padding: 3em 0px; zoom: 1; text-align: center; line-height: 24px;\">\n\t\t\t\t\t\t\t\t\t\t&nbsp;<\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/td>\n<\/tr>\n<tr style=\"word-wrap: break-word;\">\n<td style=\"word-wrap: break-word; margin: 0px; padding: 0px;\">\n<table border=\"0\" cellpadding=\"0\" cellspacing=\"0\" style=\"word-wrap: break-word; empty-cells: show; border-collapse: collapse; border-spacing: 0px;\" width=\"100%\">\n<tbody style=\"word-wrap: break-word;\">\n<tr style=\"word-wrap: break-word;\">\n<td style=\"word-wrap: break-word; margin: 0px; padding: 0px;\">\n<table border=\"0\" cellpadding=\"0\" cellspacing=\"0\" id=\"pid157992\" repuid=\"240\" style=\"word-wrap: break-word; empty-cells: show; border-collapse: collapse; border-spacing: 0px;\" summary=\"pid157992\" width=\"100%\">\n<tbody style=\"word-wrap: break-word;\">\n<tr style=\"word-wrap: break-word;\">\n<td style=\"word-wrap: break-word; margin: 0px; padding: 0px;\">\n<table border=\"0\" cellpadding=\"0\" cellspacing=\"0\" style=\"word-wrap: break-word; empty-cells: show; border-collapse: collapse; border-spacing: 0px;\" width=\"100%\">\n<tbody style=\"word-wrap: break-word;\">\n<tr class=\"h titletiezi\" style=\"word-wrap: break-word; background: rgb(244, 244, 244); height: 35px; border: none; margin: 0px; padding: 0px;\">\n<td class=\"ea\" style=\"word-wrap: break-word; margin: 0px; padding: 0px; height: 35px; width: 11px; text-align: center; line-height: 35px; overflow: hidden; border-width: initial; border-style: none; border-color: initial;\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t&nbsp;<\/td>\n<td class=\"ccc_1341\" style=\"word-wrap: break-word; margin: 0px; padding: 0px; height: 35px; width: 11px; line-height: 35px; vertical-align: middle; border-width: initial; border-style: none; border-color: initial; overflow: hidden;\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t&nbsp;<\/td>\n<td style=\"word-wrap: break-word; margin: 0px; padding: 0px;\">\n<div class=\"user clearfix\" id=\"floor_2\" style=\"word-wrap: break-word; margin: 0px; padding: 0px; zoom: 1;\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/p>\n<div class=\"userig\" style=\"word-wrap: break-word; margin: 0px 20px 0px 0px; padding: 0px; float: right; height: 35px;\">\n<ul style=\"word-wrap: break-word; margin: 0px; padding-right: 0px; padding-left: 0px; list-style: none;\">\n<li class=\"l3\" style=\"word-wrap: break-word; margin: 0px; padding: 0px; list-style: none; float: left; line-height: 35px; color: rgb(102, 102, 102);\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t2010-2-18 17:36:51<\/li>\n<li class=\"l4\" style=\"word-wrap: break-word; margin: 0px 0px 0px 15px; padding: 0px; list-style: none; float: left; line-height: 35px; color: rgb(255, 121, 121);\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u5012\u65707<\/li>\n<\/ul><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n<tr style=\"word-wrap: break-word;\">\n<td class=\"b\" style=\"word-wrap: break-word; margin: 0px; padding: 0px; background-image: url(&quot;http:\/\/bbs.21dianyuan.com\/static\/image\/common\/l1.png&quot;); background-repeat: repeat-y; width: 11px;\" width=\"25\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t&nbsp;<\/td>\n<td class=\"b\" style=\"word-wrap: break-word; margin: 0px; padding: 0px; background-image: url(&quot;http:\/\/bbs.21dianyuan.com\/static\/image\/common\/l1.png&quot;); background-repeat: repeat-y; width: 11px;\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t&nbsp;<\/td>\n<td class=\"c\" style=\"word-wrap: break-word; margin: 0px; padding: 0px;\">\n<div class=\"ctn\" style=\"word-wrap: break-word; margin: 0px; padding: 20px 20px 10px; font-size: 14px; color: rgb(51, 51, 51); word-break: break-all;\">\n<div class=\"t_f\" style=\"word-wrap: break-word; margin: 0px; padding: 0px;\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tTL431\u7684\u5185\u90e8\u63a5\u7ebf<br style=\"word-wrap: break-word;\" \/><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u4e0a\u9762\u4ecb\u7ecd\u4e86\u5e76\u8054\u5f0f\u7535\u538b\u57fa\u51c6\u82af\u7247TL431\u7684\u4f7f\u7528\uff0c\u8fd9\u91cc\u4e3a\u4e86\u52a0\u6df1\u5bf9\u8fd9\u4e2a\u5668\u4ef6\u7684\u7406\u89e3\uff0c\u7279\u5236\u4f5c\u4e86TL431\u7684\u5185\u90e8\u63a5\u7ebf\u56fe\u7684schdoc\uff0c\u7528\u6765\u5728protel dxp\u4e2d\u4eff\u771f\u3002<br style=\"word-wrap: break-word;\" \/><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u6709\u5174\u8da3\u7684\u670b\u53cb\u53ef\u4ee5\u4e0b\u8f7d\u6a21\u62df\uff0c\u770b\u770b\u8fd9\u4e2a\u7535\u8def\u7a76\u7adf\u662f\u5982\u4f55\u5de5\u4f5c\u7684\u3002\u8fd9\u91cc\u662f\u622a\u56fe\uff1a<br style=\"word-wrap: break-word;\" \/><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<br style=\"word-wrap: break-word;\" \/><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" alt=\"\" border=\"0\" class=\"zoom\" height=\"469\" id=\"aimg_giv9O\" src=\"http:\/\/www.szryc.com\/uploads\/allimg\/180908\/09195C096-7.jpg\" style=\"word-wrap: break-word; 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