{"id":27750,"date":"2025-06-10T09:01:42","date_gmt":"2025-06-10T01:01:42","guid":{"rendered":"https:\/\/techclass.wfjydl.com\/?p=27750"},"modified":"2025-11-13T17:02:05","modified_gmt":"2025-11-13T09:02:05","slug":"%e4%bd%bf%e7%94%a8%e4%ba%86%e6%b5%ae%e5%8a%a8%e5%b7%a5%e4%bd%9c%e7%ba%bf%e6%80%a7%e7%a8%b3%e5%8e%8b%e5%99%a8ic%e7%9a%84%e7%94%b5%e6%ba%90%e7%94%b5%e8%b7%af%e7%a4%ba%e4%be%8b","status":"publish","type":"post","link":"https:\/\/techclass.wfjydl.com\/knowledge\/dcdc\/dcdc-ldo\/16922","title":{"rendered":"\u4f7f\u7528\u4e86\u6d6e\u52a8\u5de5\u4f5c\u7ebf\u6027\u7a33\u538b\u5668IC\u7684\u7535\u6e90\u7535\u8def\u793a\u4f8b"},"content":{"rendered":"\\(\\)\n\u672c\u6587\u5c06\u4ee5\u652f\u6301\u6d6e\u52a8\u5de5\u4f5c\u7684\u7ebf\u6027\u7a33\u538b\u5668IC\u4e3a\u4f8b\uff0c\u4ecb\u7ecd\u7535\u6e90\u7535\u8def\u8bbe\u8ba1\u7684\u57fa\u7840\u77e5\u8bc6\u548c\u5b9e\u8df5\u4e2d\u7684\u6ce8\u610f\u4e8b\u9879\u3002<\/p>\n<h2 id=\"toc1\">\u793a\u4f8b\u4e2d\u4f7f\u7528\u7684\u7ebf\u6027\u7a33\u538b\u5668IC<\/h2>\n<p>\u4e3a\u4fbf\u4e8e\u8bf4\u660e\uff0c\u6211\u4eec\u5728\u793a\u4f8b\u4e2d\u4f7f\u7528\u5e38\u89c1\u7684\u7ebf\u6027\u7a33\u538b\u5668IC\u201c<a href=\"https:\/\/www.wfjydl.com\/products\/power-management\/linear-regulators\/standard-voltage-regulators\/ba1117fp-product\" target=\"_blank\" rel=\"noopener\">BA1117<\/a>\u201d\u3002BA1117\u662f\u4e00\u6b3e\u652f\u6301\u6d6e\u52a8\u5de5\u4f5c\u7684\u53ef\u53d8\u8f93\u51fa\u4f4e\u9971\u548c\uff08\u4f4e\u538b\u5dee\uff09\u7ebf\u6027\u7a33\u538b\u5668IC\uff0c\u5c5e\u4e8e\u201cLDO\u201d\u7c7b\u578b\u3002\u5176\u4e3b\u8981\u89c4\u683c\u548c\u6846\u56fe\u5982\u4e0b\u3002\u6d6e\u52a8\u5de5\u4f5c\u7684\u7ebf\u6027\u7a33\u538b\u5668\u91c7\u7528\u7684\u662f\u65e0\u63a5\u5730\uff08GND\uff09\u5f15\u811a\u7684\u7ed3\u6784\u8bbe\u8ba1\u3002<\/p>\n<ul class=\"nml_li\">\n<li>\u8f93\u5165\u989d\u5b9a\u7535\u538b\uff1a15V<\/li>\n<li>\u8f93\u5165\u7535\u538b\u8303\u56f4\uff1a\\(V_{OUT}\\)+1.4V\uff5e10V<\/li>\n<li>\u57fa\u51c6\u7535\u538b\uff1a1.25V<\/li>\n<li>\u8f93\u51fa\u7535\u538b\u8bbe\u7f6e\u8303\u56f4\uff1a1.25V\uff5e8.6V<\/li>\n<li>\u8f93\u51fa\u7535\u6d41\uff1a1A<\/li>\n<li>\u538b\u5dee\u7535\u538b\uff1a1.2V\uff081A\u65f6\uff09<\/li>\n<li>\u8f93\u51fa\u7535\u538b\u7cbe\u5ea6\uff1a\u00b11%\uff08\u4e0d\u542b\u5916\u7f6e\u7535\u963b\u7684\u7cbe\u5ea6\uff09<\/li>\n<li>\u8f93\u51fa\u7535\u6d41\uff1a5mA *1\uff5e1A<\/li>\n<li>\u5de5\u4f5c\u7ed3\u6e29\u8303\u56f4\uff1a-20\u2103\uff5e+105\u2103<\/li>\n<\/ul>\n<p>*1\uff1a\u542b\u7535\u538b\u8bbe\u7f6e\u7535\u963b\u7684\u7535\u6d41<br \/>\n\u203b\u89c4\u683c\u503c\u8bf7\u4ee5\u6700\u65b0\u7684\u6280\u672f\u89c4\u683c\u4e66\u4e3a\u51c6\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/06\/linear_regulatorics_f01.png\" alt=\"\u4f8b\u3068\u3057\u3066\u4f7f\u3046\u30ea\u30cb\u30a2\u30ec\u30ae\u30e5\u30ec\u30fc\u30bfIC\u306b\u3064\u3044\u3066\" width=\"480\" height=\"346\" \/><\/p>\n<p>BA1117\u662f\u4e00\u6b3e\u5728\u8f93\u51fa\u7ea7\u91c7\u7528\u4e86NPN\u6676\u4f53\u7ba1\u7684LDO\uff0c\u5176\u538b\u5dee\u7535\u538b\uff08\u5373\u7ef4\u6301\u6b63\u5e38\u5de5\u4f5c\u6240\u9700\u7684\u6700\u5c0f\u8f93\u5165\u8f93\u51fa\u7535\u538b\u5dee\u3002\u8be6\u60c5\u89c1\u540e\u6587\uff09\u7ea6\u4e3a1.2V\u3002\u8f93\u51fa\u7ea7\u91c7\u7528PNP\u6676\u4f53\u7ba1\u6216MOSFET\u7684LDO\uff0c\u5176\u538b\u5dee\u7535\u538b\u7ea6\u4e3a0.5V\uff0c\u56e0\u6b64\u53ef\u80fd\u6709\u4eba\u4f1a\u6709\u5f02\u8bae\uff1a&#8221;1.2V\u662f\u5426\u5c5e\u4e8eLDO\u8303\u7574\uff1f&#8221;\u6807\u51c6\u578b\uff08\u598278xx\u7cfb\u5217\u7b49\uff09\u7684\u538b\u5dee\u7535\u538b\u7ea6\u4e3a2V\uff0c\u56e0\u6b64BA1117\u786e\u5b9e\u5c5e\u4e8e\u4f4e\u538b\u5dee\u7ebf\u6027\u7a33\u538b\u5668\uff08LDO\uff09\u8303\u7574\u3002\u5177\u4f53\u8be6\u60c5\u8bf7\u53c2\u9605TechWeb\u4e0a\u7684\u201c<a href=\"https:\/\/techclass.wfjydl.com\/knowledge\/category\/dcdc\/s-dcdc\/01-s-dcdc\">\u7ebf\u6027\u7a33\u538b\u5668\u57fa\u7840<\/a>\u201d\u3002<\/p>\n<p>\u672c\u8282\u6709\u4ee5\u4e0b\u51e0\u70b9\u9700\u8981\u6ce8\u610f\uff1a\u8bf4\u660e\u4e2d\u4f1a\u51fa\u73b0\u8bf8\u5982&#8221;\u538b\u5dee\u7535\u538b1.2V&#8221;\u7b49\u89c4\u683c\u503c\uff0c\u4f46\u8fd9\u4e9b\u6570\u503c\u5e76\u4e0d\u4e00\u5b9a\u662f\u4fdd\u8bc1\u503c\uff08\u6700\u5927\u503c\u6216\u6700\u5c0f\u503c\uff09\u3002\u6240\u4ee5\uff0c\u5728\u5b9e\u9645\u8bbe\u8ba1\u65f6\u8bf7\u52a1\u5fc5\u4ee5\u6700\u65b0\u7684\u6280\u672f\u89c4\u683c\u4e66\u4e3a\u51c6\u3002\u53e6\u5916\uff0c\u7535\u8def\u793a\u4f8b\u7b49\u53ef\u80fd\u4f1a\u6709\u90e8\u5206\u5185\u5bb9\u7701\u7565\uff0c\u4ec5\u4f9b\u53c2\u8003\u3002<\/p>\n<h2 id=\"toc2\">\u4f7f\u7528\u4e86\u6d6e\u52a8\u5de5\u4f5c\u7ebf\u6027\u7a33\u538b\u5668IC\u7684\u7535\u6e90\u7535\u8def\u793a\u4f8b<\/h2>\n<p>\u4e0b\u9762\u662f\u7531BA1117\u6784\u6210\u7684\u5177\u6709\u4ee3\u8868\u6027\u7684\u7535\u6e90\u7535\u8def\u53caBA1117\u5c01\u88c5\u793a\u610f\u56fe\u3002\u8fd9\u6b3eIC\u7684\u6b63\u5f0f\u578b\u53f7\u540d\u79f0\u4e3a\u201cBA1117FP\u201d\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/06\/linear_regulatorics_f02.png\" alt=\"\u30d5\u30ed\u30fc\u30c6\u30a3\u30f3\u30b0\u52d5\u4f5c\u30ea\u30cb\u30a2\u30ec\u30ae\u30e5\u30ec\u30fc\u30bfIC\u306b\u3088\u308b\u96fb\u6e90\u56de\u8def\u4f8b\" width=\"689\" height=\"203\" \/><\/p>\n<p>\u7535\u8def\u975e\u5e38\u7b80\u5355\u3002\u6240\u9700\u5916\u7f6e\u5143\u4ef6\u4ec54\u4e2a\uff1a\u8f93\u5165\u7535\u5bb9\\(C_{IN}\\)\u3001\u8f93\u51fa\u7535\u5bb9\\(C_{OUT}\\)\u3001\u8f93\u51fa\u7535\u538b\u8bbe\u7f6e\u7528\u7684\u7535\u963b\\(R_1\\)\u548c\\(R_2\\)\uff0c\u5747\u53ef\u91c7\u7528\u5c0f\u578b\u8d34\u7247\u5f0f\u7684\u4ea7\u54c1\u3002<br \/>\nBA1117\u7684\u5c01\u88c5\u5f62\u5f0f\u4e3aTO252-3\u3002\u8fd9\u662f\u5177\u6709\u53ef\u63d0\u9ad8\u6563\u70ed\u6027\u80fd\u7684FIN\uff08\u4e5f\u79f0\u4e3a\u201cTAB\u201d\uff09\u7684\u8868\u9762\u8d34\u88c5\u578b\u5c01\u88c5\uff0c\u662f1A\u8f93\u51fa\u7ea7\u4e2d\u7684\u5178\u578b\u5c01\u88c5\u5f62\u5f0f\u3002\u4e0b\u9762\u662f\u5404\u5f15\u811a\u7684\u529f\u80fd\u8bf4\u660e\uff1a<\/p>\n<div class=\"tbl_wrap\">\n<table class=\"tbl_nml\">\n<tbody>\n<tr>\n<th width=\"130\"><span style=\"font-size:12px;\">\u5f15\u811a\u540d<\/span><\/th>\n<th width=\"736\"><span style=\"font-size:12px;\">\u529f\u80fd<\/span><\/th>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">ADJ<\/span><\/td>\n<td class=\"ali_left\" style=\"text-align: left;\"><span style=\"font-size:12px;\"><strong>\u8f93\u51fa\u7535\u538b\u8bbe\u7f6e\u5f15\u811a<\/strong><br \/>\nADJ\u5f15\u811a\u901a\u8fc7\u4e0e\\(V_{OUT}\\)\u5f15\u811a\u4e4b\u95f4\u4ea7\u751f1.25V\u57fa\u51c6\u7535\u538b\uff0c\u5e76\u5bf9\\(V_{OUT}\\)\u5f15\u811a\u4e0e\u63a5\u5730\u4e4b\u95f4\u8fdb\u884c\u7535\u963b\u5206\u538b\uff0c\u53ef\u57281.25V\u81f38.6V\u7684\u8303\u56f4\u5185\u8bbe\u7f6e\u8f93\u51fa\u7535\u538b\u3002<\/span><\/td>\n<\/tr>\n<tr>\n<td>\\(V_{IN}\\)<\/td>\n<td class=\"ali_left\" style=\"text-align: left;\"><span style=\"font-size:12px;\"><strong>\u8f93\u5165\u5f15\u811a<\/strong><br \/>\n\u901a\u8fc7\u8f93\u5165\u5f15\u811a\u7ed9IC\u4f9b\u7535\u3002\u4e3a\u4f7fIC\u7684\u8f93\u5165\u66f4\u7a33\u5b9a\uff0c\u4f1a\u5728\\(V_{IN}\\)\u4e0e\u63a5\u5730\u4e4b\u95f4\u8fde\u63a5\u7535\u5bb9\u5668\u3002\u7535\u5bb9\u5668\u5e94\u914d\u7f6e\u5728\u5f15\u811a\u9644\u8fd1\u3002<\/span><\/td>\n<\/tr>\n<tr>\n<td>FIN\uff1d\\(V_{OUT}\\)<\/td>\n<td class=\"ali_left\" style=\"text-align: left;\"><span style=\"font-size:12px;\"><strong>\u8f93\u51fa\u5f15\u811a\u3001\u6563\u70ed\u7fc5\u7247<\/strong><br \/>\n\u7ed9\u8d1f\u8f7d\u4f9b\u7535\u3002\u4e3a\u9632\u6b62\u632f\u8361\uff0c\\(V_{OUT}\\)\u5f15\u811a\u9700\u4e0e\u63a5\u5730\u4e4b\u95f4\u8fde\u63a5\u7535\u5bb9\u5668\u3002FIN\u901a\u8fc7\u5f15\u7ebf\u6846\u67b6\u4e0eIC\u82af\u7247\u8fde\u63a5\uff0c\u4e3a\u63d0\u5347\u6563\u70ed\u6548\u7387\uff0c\u5efa\u8bae\u5c06\u5176\u710a\u63a5\u5728\u94dc\u7b94\u9762\u79ef\u8f83\u5927\u7684\\(V_{OUT}\\)\u5c42\u4e0a\u3002<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2 id=\"toc3\">\u6d6e\u52a8\u5de5\u4f5c\u7ebf\u6027\u7a33\u538b\u5668IC\u7684\u8f93\u51fa\u7535\u538b\u8bbe\u7f6e\u65b9\u6cd5<\/h2>\n<p>\u793a\u4f8b\u4e2d\u4f7f\u7528\u7684\u7ebf\u6027\u7a33\u538b\u5668IC<a href=\"https:\/\/www.wfjydl.com\/products\/power-management\/linear-regulators\/standard-voltage-regulators\/ba1117fp-product\">BA1117<\/a>\u5c5e\u4e8e\u53ef\u53d8\u8f93\u51fa\u578bLDO\u3002\u53ef\u53d8\u8f93\u51fa\u578b\u901a\u8fc7\u4f7f\u7528\u5916\u7f6e\u7535\u963b\u5206\u538b\u5668\uff0c\u53ef\u8bbe\u7f6e\u4efb\u610f\u8f93\u51fa\u7535\u538b\u503c\uff08\u901a\u5e38\u8bbe\u7f6e\u8303\u56f4\u4e3a\u4ece\u5185\u90e8\u57fa\u51c6\u7535\u538b\u6e90\u5230IC\u89c4\u5b9a\u7684\u6700\u5927\u8f93\u51fa\u7535\u538b\uff09\u3002\u53e6\u5916\uff0c\u9664\u53ef\u53d8\u8f93\u51fa\u578b\u5916\uff0c\u8fd8\u6709\u56fa\u5b9a\u8f93\u51fa\u578b\u4ea7\u54c1\u3002\u8fd9\u79cd\u662f\u5728IC\u5185\u90e8\u5185\u7f6e\u4e86\u5206\u538b\u7535\u963b\u7684\u4ea7\u54c1\uff0c\u53ef\u8bbe\u7f6e5V\u548c3.3V\u7b49\u5e38\u89c1\u7684\u6807\u51c6\u7535\u538b\uff0c\u901a\u5e38\u4ec5\u9700\u5916\u63a5\u8f93\u5165\u8f93\u51fa\u7535\u5bb9\u5668\u5373\u53ef\u5de5\u4f5c\u3002\u53ef\u6839\u636e\u4f7f\u7528\u9700\u6c42\uff0c\u7075\u6d3b\u9009\u7528\u53ef\u53d8\u8f93\u51fa\u578b\u4e0e\u56fa\u5b9a\u8f93\u51fa\u578b\u4ea7\u54c1\u3002<\/p>\n<p>BA1117\u652f\u63011.25V\uff5e8.6V\u8303\u56f4\u7684\u8f93\u51fa\u7535\u538b\u8bbe\u7f6e\u3002\u8f93\u51fa\u7535\u538b\u53ef\u901a\u8fc7\u4ee5\u4e0b\u516c\u5f0f\u8ba1\u7b97\u5f97\u51fa\uff1a<\/p>\n<p><span class=\"mathjax-text\">\\(V_{\\text{out}} = V_{\\text{REF}} \\times \\left(1 + \\displaystyle \\frac{R_2}{R_1}\\right) + I_{\\text{ADJ}} \\times R_2 \\, \\text{[V]}\\)<\/span><\/p>\n<p>\\(V_{REF}\\) *1\uff1a\u57fa\u51c6\u7535\u538b\uff3bV\uff3d\uff1d1.25V typ<br \/>\n\\(I_{ADJ}\\)\uff1aADJ\u5f15\u811a\u7535\u6d41\uff3bA\uff3d\uff1d60\u00b5A typ<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/06\/linear_regulatorics_f03.png\" alt=\"\u30d5\u30ed\u30fc\u30c6\u30a3\u30f3\u30b0\u52d5\u4f5c\u30ea\u30cb\u30a2\u30ec\u30ae\u30e5\u30ec\u30fc\u30bfIC\u306e\u51fa\u529b\u96fb\u5727\u8a2d\u5b9a\u65b9\u6cd5\" width=\"404\" height=\"174\" \/><\/p>\n<p>BA1117\u7684\\(V_{OUT}\\)\u5f15\u811a\u4e0eADJ\u5f15\u811a\u4e4b\u95f4\u4f1a\u8f93\u51fa1.25V\u7684\u57fa\u51c6\u7535\u538b\u3002\\(R_1\\)\u7684\u7535\u6d41\\(I_1\\)\u53ef\u901a\u8fc71.25V\/\\(R_1\\)\u8ba1\u7b97\u5f97\u51fa\uff0c\u800c\\(R_2\\)\u7684\u7535\u6d41\u5219\u4e3a\\(R_1\\)\u7684\u7535\u6d41\u52a0\u4e0aADJ\u5f15\u811a\u7684\u504f\u7f6e\u7535\u6d41\\(I_{ADJ}\\)\u5f97\u5230\u7684\u503c\u3002ADJ\u5f15\u811a\u7684\u504f\u7f6e\u7535\u6d41\u4e3a60\u03bcA typ\uff08120\u03bcA max\uff09\uff0c\u901a\u8fc7\\(R_2\\)\u6d41\u5411\u63a5\u5730\u7aef\u3002\u4e3a\u51cf\u5c0fADJ\u5f15\u811a\u7684\u504f\u7f6e\u7535\u6d41\u5f15\u8d77\u7684\u8f93\u51fa\u7535\u538b\u8bef\u5dee\uff0c\u5efa\u8bae\u5c06\\(R_1\\)\u503c\u8bbe\u7f6e\u4e3a120\u03a9\u3002\u901a\u8fc7\u5c06\\(R_1\\)\u503c\u8c03\u5c0f\u5e76\u5c06\\(I_1\\)\u503c\u8c03\u5927\uff0c\\(I_{ADJ}\\)\u503c\u4fbf\u53ef\u5ffd\u7565\u4e0d\u8ba1\u3002<\/p>\n<p>\u53e6\u5916\uff0c\u5728PCB\u5e03\u5c40\u65b9\u9762\uff0c\u4e3a\u83b7\u5f97\u6700\u4f73\u8d1f\u8f7d\u8c03\u6574\u6027\u80fd\uff0c\u8bf7\u5c06\u8f93\u51fa\u7535\u538b\u8bbe\u7f6e\u7535\u963b\u7684\u4e0a\u7aef\u76f4\u63a5\u8fde\u63a5\u4e8e\\(V_{OUT}\\)\uff08FIN\uff09\u5f15\u811a\u3002<\/p>\n<p>\u4e0b\u8868\u5217\u51fa\u4e86\u5178\u578b\u8f93\u51fa\u7535\u538b\u5bf9\u5e94\u7684\u8bbe\u7f6e\u7535\u963b\u503c\u3002\u672c\u793a\u4f8b\u4e2d\u91c7\u7528\u7684\u6807\u79f0\u7535\u963b\u503c\u662fE24\u7cfb\u5217\u3002\u7535\u963b\\(R_1\\)\u548c\\(R_2\\)\u9700\u4f7f\u7528\u540c\u4e00\u7c7b\u578b\u7684\u4ea7\u54c1\u3002\u82e5\u7c7b\u578b\u4e0d\u540c\uff0c\u7531\u4e8e\u5b83\u4eec\u7684\u5bb9\u5dee\u548c\u6e29\u5ea6\u7279\u6027\u4e0d\u540c\uff0c\\(R_1\\)\u4e0e\\(R_2\\)\u7684\u6bd4\u7387\u53ef\u80fd\u4f1a\u53d1\u751f\u53d8\u5316\uff0c\u4ece\u800c\u5f88\u53ef\u80fd\u5bfc\u81f4\u8f93\u51fa\u7535\u538b\u7cbe\u5ea6\u6076\u5316\u3002\u4f7f\u7528\u6bd40402mm\uff0801005\u82f1\u5bf8\uff09\u5c3a\u5bf8\u5c0f\u7684\u8d34\u7247\u7535\u963b\u65f6\uff0c\u8bf7\u6ce8\u610f\u9009\u62e9\u7b26\u5408\u7535\u963b\u989d\u5b9a\u529f\u7387\u548c\u6700\u5927\u7535\u538b\u8981\u6c42\u7684\u4ea7\u54c1\u3002<\/p>\n<h4 id=\"toc4\">\u4ee5\u6700\u5c11\u5143\u5668\u4ef6\u6570\u91cf\u8fdb\u884c\u8bbe\u7f6e\u65f6<\/h4>\n<div class=\"tbl_wrap\">\n<table class=\"tbl_nml\">\n<tbody>\n<tr>\n<th><span style=\"font-size:12px;\">\u76ee\u6807\u503c\\(V_O\\)\\(\uff08V\uff09\\)<\/span><\/th>\n<th><span style=\"font-size:12px;\">\\(R_1\\)\\(\uff08\u03a9\uff09\\)<\/span><\/th>\n<th><span style=\"font-size:12px;\">\\(R_2\\)\\(\uff08\u03a9\uff09\\)<\/span><\/th>\n<th><span style=\"font-size:12px;\">\u8ba1\u7b97\u503c\\(V_O\\)\u2018\\(\uff08V\uff09\\)<\/span><\/th>\n<th><span style=\"font-size:12px;\">\u8bef\u5dee\uff08%\uff09<\/span><\/th>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">1.25<\/span><\/td>\n<td><span style=\"font-size:12px;\">120<\/span><\/td>\n<td><span style=\"font-size:12px;\">0<\/span><\/td>\n<td><span style=\"font-size:12px;\">1.250<\/span><\/td>\n<td><span style=\"font-size:12px;\">0<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">1.5<\/span><\/td>\n<td><span style=\"font-size:12px;\">120<\/span><\/td>\n<td><span style=\"font-size:12px;\">24<\/span><\/td>\n<td><span style=\"font-size:12px;\">1.501<\/span><\/td>\n<td><span style=\"font-size:12px;\">+ 0.10<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">1.8<\/span><\/td>\n<td><span style=\"font-size:12px;\">82<\/span><\/td>\n<td><span style=\"font-size:12px;\">36<\/span><\/td>\n<td><span style=\"font-size:12px;\">1.801<\/span><\/td>\n<td><span style=\"font-size:12px;\">+ 0.05<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">1.9<\/span><\/td>\n<td><span style=\"font-size:12px;\">120<\/span><\/td>\n<td><span style=\"font-size:12px;\">62<\/span><\/td>\n<td><span style=\"font-size:12px;\">1.900<\/span><\/td>\n<td><span style=\"font-size:12px;\">\u2013 0.02<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">2<\/span><\/td>\n<td><span style=\"font-size:12px;\">200<\/span><\/td>\n<td><span style=\"font-size:12px;\">120<\/span><\/td>\n<td><span style=\"font-size:12px;\">2.007<\/span><\/td>\n<td><span style=\"font-size:12px;\">+ 0.36<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">2.5<\/span><\/td>\n<td><span style=\"font-size:12px;\">120<\/span><\/td>\n<td><span style=\"font-size:12px;\">120<\/span><\/td>\n<td><span style=\"font-size:12px;\">2.507<\/span><\/td>\n<td><span style=\"font-size:12px;\">+ 0.29<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">3<\/span><\/td>\n<td><span style=\"font-size:12px;\">130<\/span><\/td>\n<td><span style=\"font-size:12px;\">180<\/span><\/td>\n<td><span style=\"font-size:12px;\">2.992<\/span><\/td>\n<td><span style=\"font-size:12px;\">\u2013 0.28<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">3.3<\/span><\/td>\n<td><span style=\"font-size:12px;\">110<\/span><\/td>\n<td><span style=\"font-size:12px;\">180<\/span><\/td>\n<td><span style=\"font-size:12px;\">3.306<\/span><\/td>\n<td><span style=\"font-size:12px;\">+ 0.19<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">5<\/span><\/td>\n<td><span style=\"font-size:12px;\">120<\/span><\/td>\n<td><span style=\"font-size:12px;\">360<\/span><\/td>\n<td><span style=\"font-size:12px;\">5.022<\/span><\/td>\n<td><span style=\"font-size:12px;\">+ 0.43<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">6<\/span><\/td>\n<td><span style=\"font-size:12px;\">180<\/span><\/td>\n<td><span style=\"font-size:12px;\">680<\/span><\/td>\n<td><span style=\"font-size:12px;\">6.013<\/span><\/td>\n<td><span style=\"font-size:12px;\">+ 0.22<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">7<\/span><\/td>\n<td><span style=\"font-size:12px;\">180<\/span><\/td>\n<td><span style=\"font-size:12px;\">820<\/span><\/td>\n<td><span style=\"font-size:12px;\">6.994<\/span><\/td>\n<td><span style=\"font-size:12px;\">\u2013 0.09<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">8<\/span><\/td>\n<td><span style=\"font-size:12px;\">150<\/span><\/td>\n<td><span style=\"font-size:12px;\">820<\/span><\/td>\n<td><span style=\"font-size:12px;\">8.133<\/span><\/td>\n<td><span style=\"font-size:12px;\">+ 1.66<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h4 id=\"toc5\">\u9ad8\u7cbe\u5ea6\u8bbe\u7f6e\u65f6<\/h4>\n<div class=\"tbl_wrap\">\n<table class=\"tbl_nml\">\n<tbody>\n<tr>\n<th><span style=\"font-size:12px;\">\u76ee\u6807\u503c\\(V_O\\)\\(\uff08V\uff09\\)<\/span><\/th>\n<th><span style=\"font-size:12px;\">\\(R_1\\)\\(\uff08\u03a9\uff09\\)<\/span><\/th>\n<th><span style=\"font-size:12px;\">\\(R_2\\)\\(\uff08\u03a9\uff09\\)<\/span><\/th>\n<th><span style=\"font-size:12px;\">\u8ba1\u7b97\u503c\\(V_O\\)\u2018\\(\uff08V\uff09\\)<\/span><\/th>\n<th><span style=\"font-size:12px;\">\u8bef\u5dee\uff08%\uff09<\/span><\/th>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">1.25<\/span><\/td>\n<td><span style=\"font-size:12px;\">120<\/span><\/td>\n<td><span style=\"font-size:12px;\">0<\/span><\/td>\n<td><span style=\"font-size:12px;\">1.250<\/span><\/td>\n<td><span style=\"font-size:12px;\">0<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">1.5<\/span><\/td>\n<td><span style=\"font-size:12px;\">120<\/span><\/td>\n<td><span style=\"font-size:12px;\">24<\/span><\/td>\n<td><span style=\"font-size:12px;\">1.501<\/span><\/td>\n<td><span style=\"font-size:12px;\">+ 0.10<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">1.8<\/span><\/td>\n<td><span style=\"font-size:12px;\">82<\/span><\/td>\n<td><span style=\"font-size:12px;\">36<\/span><\/td>\n<td><span style=\"font-size:12px;\">1.801<\/span><\/td>\n<td><span style=\"font-size:12px;\">+ 0.05<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">1.9<\/span><\/td>\n<td><span style=\"font-size:12px;\">120<\/span><\/td>\n<td><span style=\"font-size:12px;\">62<\/span><\/td>\n<td><span style=\"font-size:12px;\">1.900<\/span><\/td>\n<td><span style=\"font-size:12px;\">\u2013 0.02<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">2<\/span><\/td>\n<td><span style=\"font-size:12px;\">120<\/span><\/td>\n<td><span style=\"font-size:12px;\">68+3.6<\/span><\/td>\n<td><span style=\"font-size:12px;\">2.000<\/span><\/td>\n<td><span style=\"font-size:12px;\">+ 0.01<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">2.5<\/span><\/td>\n<td><span style=\"font-size:12px;\">150<\/span><\/td>\n<td><span style=\"font-size:12px;\">110+39<\/span><\/td>\n<td><span style=\"font-size:12px;\">2.501<\/span><\/td>\n<td><span style=\"font-size:12px;\">+ 0.02<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">3<\/span><\/td>\n<td><span style=\"font-size:12px;\">120<\/span><\/td>\n<td><span style=\"font-size:12px;\">120+47<\/span><\/td>\n<td><span style=\"font-size:12px;\">3.000<\/span><\/td>\n<td><span style=\"font-size:12px;\">\u2013 0.01<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">3.3<\/span><\/td>\n<td><span style=\"font-size:12px;\">130<\/span><\/td>\n<td><span style=\"font-size:12px;\">130+82<\/span><\/td>\n<td><span style=\"font-size:12px;\">3.301<\/span><\/td>\n<td><span style=\"font-size:12px;\">+ 0.04<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">5<\/span><\/td>\n<td><span style=\"font-size:12px;\">160<\/span><\/td>\n<td><span style=\"font-size:12px;\">430+47<\/span><\/td>\n<td><span style=\"font-size:12px;\">5.005<\/span><\/td>\n<td><span style=\"font-size:12px;\">+ 0.10<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">6<\/span><\/td>\n<td><span style=\"font-size:12px;\">150<\/span><\/td>\n<td><span style=\"font-size:12px;\">510+56<\/span><\/td>\n<td><span style=\"font-size:12px;\">6.001<\/span><\/td>\n<td><span style=\"font-size:12px;\">+ 0.01<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">7<\/span><\/td>\n<td><span style=\"font-size:12px;\">120<\/span><\/td>\n<td><span style=\"font-size:12px;\">510+39<\/span><\/td>\n<td><span style=\"font-size:12px;\">7.002<\/span><\/td>\n<td><span style=\"font-size:12px;\">+ 0.02<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-size:12px;\">8<\/span><\/td>\n<td><span style=\"font-size:12px;\">130<\/span><\/td>\n<td><span style=\"font-size:12px;\">680+18<\/span><\/td>\n<td><span style=\"font-size:12px;\">8.003<\/span><\/td>\n<td><span style=\"font-size:12px;\">+ 0.04<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u8fd9\u91cc\u6709\u4e00\u70b9\u9700\u8981\u6ce8\u610f\u3002\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u4f1a\u901a\u8fc7\\(R_1\\)\u548c\\(R_2\\)\u4ece\\(V_{OUT}\\)\u5f15\u811a\u6301\u7eed\u5411\u63a5\u5730\u7aef\u6d41\u5165\u7ea610mA\u7684\u7535\u6d41\u3002\u4f46\u82e5\u5c06\u8f93\u51fa\u7535\u538b\u8bbe\u5b9a\u4e3a1.25V\uff0c\u5e76\u5c06\\(R_1\\)\u8bbe\u4e3a\u5f00\u8def\u72b6\u6001\u65f6\uff0c\u8be5\u7535\u6d41\u4f1a\u53d8\u4e3a\u96f6\u3002\u7136\u800c\uff0c\u5f53\u8d1f\u8f7d\u7535\u6d41\u53d8\u4e3a\u96f6\u65f6\uff0cBA1117\u7684\u8d1f\u53cd\u9988\u529f\u80fd\u5c06\u5931\u6548\uff0c\u5bfc\u81f4\u8f93\u51fa\u7535\u538b\u4e0a\u5347\uff0c\u4ece\u800c\u65e0\u6cd5\u6b63\u5e38\u5de5\u4f5c\u3002\u8fd9\u8868\u793a\u6280\u672f\u89c4\u683c\u4e66\u4e2d\u8bb0\u8f7d\u7684\u89c4\u683c\u503c\u2014\u2014\u6700\u5c0f\u8d1f\u8f7d\u7535\u6d41\uff08\\(I_{O(min)}\\)\uff09\u7684\u6700\u5927\u503c\uff0c\u4ee5\u53ca\u8f93\u51fa\u7535\u6d41\uff08\\(I_O\\)\uff09\u7684\u6700\u5c0f\u503c\u3002\u4e3a\u9632\u6b62\u8fd9\u79cd\u60c5\u51b5\u53d1\u751f\uff0c\u9700\u8981\u7ed9\\(R_1\\)\u914d\u7f6e120\u03a9\u7684\u7535\u963b\uff0c\u4ee5\u786e\u4fdd\u8d1f\u8f7d\u7535\u6d41\u59cb\u7ec8\u4fdd\u6301\u572810mA\u5de6\u53f3\u3002<\/p>\n<h2 id=\"toc6\">\u8d1f\u8f7d\u8c03\u6574\u548c\u6d6e\u52a8\u5de5\u4f5c\u7ebf\u6027\u7a33\u538b\u5668\u7684\u5f00\u5c14\u6587\u8fde\u63a5<\/h2>\n<p>\u901a\u5e38\uff0c\u53ea\u8981\u5c06\u8f93\u51fa\u7535\u538b\u8bbe\u7f6e\u7535\u963b\u8fde\u63a5\u5728\\(V_{OUT}\\)\u5f15\u811a\u7684\u7ebf\u8def\u4e0a\uff0c\u5373\u53ef\u83b7\u5f97\u6700\u4f73\u7684\u7a33\u538b\u6548\u679c\u3002\u7136\u800c\uff0c\u5728\u8d1f\u8f7d\u7535\u6d41\u8f83\u5927\u3001\u8d70\u7ebf\u5bbd\u5ea6\u8f83\u7a84\u6216\u5230\u8d1f\u8f7d\u7684\u8ddd\u79bb\u8f83\u8fdc\u7b49\u60c5\u51b5\u4e0b\uff0cPCB\u94dc\u7b94\u5e03\u7ebf\u7684\u7535\u963b\u53ef\u80fd\u4f1a\u5f15\u8d77\u7535\u538b\u964d\uff0c\u4ece\u800c\u53ef\u80fd\u5bfc\u81f4\u8d1f\u8f7d\u70b9\u7684\u7535\u538b\u964d\u4f4e\u3002\u6b64\u65f6\uff0c\u9700\u8981\u5c06\u7ebf\u6027\u7a33\u538b\u5668IC\u81ea\u8eab\u7684\u8d1f\u8f7d\u8c03\u6574\u7387\u4e0e\u8fd9\u4e9b\u56e0\u7d20\u7684\u8d1f\u8f7d\u8c03\u6574\u7387\u76f8\u52a0\u8fdb\u884c\u8ba1\u7b97\u3002\u8fd9\u79cd\u8d1f\u8f7d\u8c03\u6574\u601d\u8def\u4e0d\u4ec5\u9002\u7528\u4e8e\u6d6e\u52a8\u5de5\u4f5c\u7ebf\u6027\u7a33\u538b\u5668\uff0c\u4e5f\u662f\u9002\u7528\u4e8e\u6240\u6709\u7ebf\u6027\u7a33\u538b\u5668\u901a\u7528\u7684\u601d\u8def\u3002<\/p>\n<p>\u901a\u8fc7\u5c06\u8f93\u51fa\u7535\u538b\u8bbe\u7f6e\u7535\u963b\u5206\u538b\u5668\u7684\u4e0b\u7aef\u5c3d\u53ef\u80fd\u9760\u8fd1\u8d1f\u8f7d\u8fdb\u884c\u8fde\u63a5\uff0c\u53ef\u6d88\u9664\u8be5\u5f71\u54cd\u3002\u8fd9\u4e2a\u65b9\u6cd5\u5c31\u662f\u4f17\u6240\u5468\u77e5\u7684\u5f00\u5c14\u6587\u8fde\u63a5\u6cd5\uff0c\u80fd\u591f\u6d88\u9664\u8f93\u51fa\u5927\u7535\u6d41\\(I_{LARGE}\\)\u4e0e\\(V_{OUT}\\)\u5f15\u811a\u81f3\u8d1f\u8f7d\u7aef\u4e4b\u95f4\u7684\u8d70\u7ebf\u7535\u963b\\(R_{PARASTIC}\\)\u5bfc\u81f4\u7684\u7535\u538b\u964d\u7684\u5f71\u54cd\u3002\u53e6\u5916\uff0c\u5c06\u9ad8\u963b\u6297\u7684\u5206\u538b\u7535\u963b\u5668\u914d\u7f6e\u5728IC\u9644\u8fd1\uff0c\u5e76\u5ef6\u957f\u4f4e\u963b\u6297\u7684\u7535\u963b\u4e0b\u7aef\u7684\u8d70\u7ebf\uff0c\u53ef\u6709\u6548\u63d0\u5347\u6297\u566a\u6027\u80fd\u3002\u4e0b\u9762\u662fBA1117\u7684\u5f00\u5c14\u6587\u8fde\u63a5\u793a\u4f8b\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/06\/linear_regulatorics_f04.png\" alt=\"\u30ed\u30fc\u30c9\u30ec\u30ae\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u3068\u30d5\u30ed\u30fc\u30c6\u30a3\u30f3\u30b0\u52d5\u4f5c\u30ea\u30cb\u30a2\u30ec\u30ae\u30e5\u30ec\u30fc\u30bf\u306e\u30b1\u30eb\u30d3\u30f3\u63a5\u7d9a\" width=\"598\" height=\"263\" \/><\/p>\n<p>IC\u7684\u8f93\u51fa\u7535\u5bb9\\(C_{OUT}\\)\u7528\u4e8e\u9632\u6b62\u632f\u8361\uff0c\u56e0\u6b64\u5e94\u914d\u7f6e\u5728IC\u9644\u8fd1\uff1b\u800c\u5728\u8d1f\u8f7d\u9644\u8fd1\u5219\u9700\u914d\u7f6e\u5927\u5bb9\u91cf\u7535\u5bb9\\(C_{BULK}\\)\uff0c\u4ee5\u5bf9\u6025\u5267\u7684\u8d1f\u8f7d\u53d8\u5316\u8fc5\u901f\u4f5c\u51fa\u54cd\u5e94\u3002<\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u591a\u6570\u7ebf\u6027\u7a33\u538b\u5668IC\u5747\u8bbe\u6709\u63a5\u5730\u5f15\u811a\uff08\u6d6e\u52a8\u5de5\u4f5c\u7684BA1117\u6ca1\u6709\u63a5\u5730\u5f15\u811a\uff09\uff0c\u7531\u4e8eADJ\u5f15\u811a\u4e0e\u63a5\u5730\u4e4b\u95f4\u6709\u57fa\u51c6\u7535\u538b\uff0c\u56e0\u6b64\u9700\u91c7\u7528\u5f00\u5c14\u6587\u8fde\u63a5\u6cd5\u5c06\u7535\u963b\u5206\u538b\u5668\u4e0a\u7aef\u9760\u8fd1\u8d1f\u8f7d\u7aef\u914d\u7f6e\u3002\u4f46\u8981\u6ce8\u610f\uff0c\u7531\u4e8eBA1117\u5728ADJ\u5f15\u811a\u4e0e\u8f93\u51fa\\(V_{OUT}\\)\u5f15\u811a\u4e4b\u95f4\u6709\u57fa\u51c6\u7535\u538b\uff0c\u6240\u4ee5\u5176\u8fde\u63a5\u65b9\u5f0f\u5e94\u4e0e\u5e38\u89c4\u63a5\u6cd5\u76f8\u53cd\u3002\u4e0b\u56fe\u4e3aBA1117\u9519\u8bef\u7684\u5f00\u5c14\u6587\u8fde\u63a5\u65b9\u5f0f\u3002\u6b64\u65f6\u7684\u8f93\u51fa\u7535\u538b\u53ef\u7528\u540e\u7eed\u7684\u516c\u5f0f\u8868\u793a\u3002\u4e0e\u4e0a\u4e00\u8282\u7ed9\u51fa\u7684\u8f93\u51fa\u7535\u538b\u8bbe\u7f6e\u7528\u7684\u516c\u5f0f\u76f8\u6bd4\uff0c\u9519\u8bef\u7684\u8fde\u63a5\u65b9\u5f0f\u4f1a\u5bfc\u81f4\\(V_{REF}\\)\u9879\u4e2d\u989d\u5916\u53e0\u52a0\u7531\u8f93\u51fa\u5927\u7535\u6d41\\(I_{LARGE}\\)\u4e0e\\(V_{OUT}\\)\u5f15\u811a\u81f3\u8d1f\u8f7d\u7aef\u4e4b\u95f4\u7684\u8d70\u7ebf\u7535\u963b\\(R_{PARASTIC}\\)\u5f15\u53d1\u7684\u7535\u538b\u964d\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u8d1f\u8f7d\u7535\u6d41\uff08\\(I_{LARGE}\\)\uff09\u4f1a\u5bfc\u81f4\u8d1f\u8f7d\u8c03\u6574\u6027\u80fd\u6076\u5316\uff0c\u8fd9\u610f\u5473\u7740\u65e0\u6cd5\u83b7\u5f97\u5f00\u5c14\u6587\u8fde\u63a5\u7684\u6548\u679c\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/06\/linear_regulatorics_f05.png\" alt=\"\u30ed\u30fc\u30c9\u30ec\u30ae\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u3068\u30d5\u30ed\u30fc\u30c6\u30a3\u30f3\u30b0\u52d5\u4f5c\u30ea\u30cb\u30a2\u30ec\u30ae\u30e5\u30ec\u30fc\u30bf\u306e\u30b1\u30eb\u30d3\u30f3\u63a5\u7d9a\" width=\"586\" height=\"260\" \/><\/p>\n<p>\uff1c\u4e0a\u56fe\u7684\u8f93\u51fa\u7535\u538b\u8ba1\u7b97\u516c\u5f0f\uff1e<br \/>\n<span class=\"mathjax-text\">\\(V_{\\text{out}} = (V_{\\text{REF}} + I_{\\text{LARGE}} \\times R_{\\text{PARASITIC}}) \\times \\left(1 + \\displaystyle \\frac{R_2}{R_1}\\right) + I_{\\text{ADJ}} \\times R_2 \\, \\text{[V]}\\)<\/span><\/p>\n<h2 id=\"toc7\">\u6d6e\u52a8\u5de5\u4f5c\u7ebf\u6027\u7a33\u538b\u5668IC\u7684\u8f93\u51fa\u7535\u538b\u8bef\u5dee<\/h2>\n<p>\u8f93\u51fa\u7535\u538b\u8bef\u5dee\u4e3a<a href=\"https:\/\/www.wfjydl.com\/products\/power-management\/linear-regulators\/standard-voltage-regulators\/ba1117fp-product\" target=\"_blank\" rel=\"noopener\">BA1117<\/a>\u7684\u57fa\u51c6\u7535\u538b<sup>*1<\/sup>\u5bb9\u5dee\u4e0e\u8f93\u51fa\u7535\u538b\u8bbe\u7f6e\u7528\u7684\u5916\u7f6e\u7535\u963b\u5bb9\u5dee\u7684\u4e58\u79ef\uff0c\u52a0\u4e0aADJ\u5f15\u811a\u7535\u6d41\\(I_{ADJ}\\)\u7684\u5bb9\u5dee\u3001\u7ebf\u8def\u8c03\u6574\u7387\u5bb9\u5dee\u4ee5\u53ca\u8d1f\u8f7d\u8c03\u6574\u7387\u5bb9\u5dee\u7684\u603b\u548c<sup>*2<\/sup>\u3002\u82e5\u4ee5\u5404\u5bb9\u5dee\u7684\u6700\u5927\u503c\u8ba1\u7b97\uff0c\u53ef\u6c42\u5f97\u6700\u5927\u5bb9\u5dee\uff0c\u800c\u4ee5\u6700\u5c0f\u503c\u8ba1\u7b97\u5219\u53ef\u6c42\u5f97\u6700\u5c0f\u5bb9\u5dee\u3002<\/p>\n<p>*1\uff1a\u6280\u672f\u89c4\u683c\u4e66\u4e2d\u4f7f\u7528\\(V_O\\)\u6765\u8868\u793a\u57fa\u51c6\u7535\u538b\uff08Reference Voltage\uff09\uff0c\u6240\u4ee5\u8fd9\u91cc\u6cbf\u7528\\(V_O\\)\u3002<br \/>\n*2\uff1a\u4e0d\u5305\u62ecPCB\u7684\u8d70\u7ebf\u7535\u963b\u5f15\u8d77\u7684\u8d1f\u8f7d\u8c03\u6574\u7387\u3002<br \/>\n\u8f93\u51fa\u7535\u538b\u7684\u6700\u5927\u503c\u548c\u6700\u5c0f\u503c\u53ef\u901a\u8fc7\u4ee5\u4e0b\u516c\u5f0f\u6765\u8868\u793a\u3002\u5728\u6b64\u57fa\u7840\u4e0a\uff0c\u8003\u8651\u5230\u7ebf\u8def\u8c03\u6574\u7387\u4e0e\u8d1f\u8f7d\u8c03\u6574\u7387\u5bb9\u5dee\u7684\u503c\uff0c\u5f62\u6210\u8f93\u51fa\u7535\u538b\u7684\u6700\u7ec8\u8bef\u5dee\u8303\u56f4\u3002<\/p>\n<p>\uff1c\u6700\u5c0f\u503c\uff1e<br \/>\n<span class=\"mathjax-text\">\\(V_{\\text{out(min)}} = V_{\\text{0(min)}} \\times \\left(1 + \\displaystyle \\frac{R_2(\\text{min})}{R_1(\\text{min})}\\right) + I_{\\text{ADJ(min)}} \\times R_2(\\text{min}) \\, \\text{[V]}\\)<\/span><br \/>\n\uff1c\u6700\u5927\u503c\uff1e<br \/>\n<span class=\"mathjax-text\">\\(V_{\\text{out(max)}} = V_{\\text{0(max)}} \\times \\left(1 + \\displaystyle \\frac{R_2(\\text{max})}{R_1(\\text{max})}\\right) + I_{\\text{ADJ(max)}} \\times R_2(\\text{max}) \\, \\text{[V]}\\)<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"\u672c\u6587\u5c06\u4ee5\u652f\u6301\u6d6e\u52a8\u5de5\u4f5c\u7684\u7ebf\u6027\u7a33\u538b\u5668IC\u4e3a\u4f8b\uff0c\u4ecb\u7ecd\u7535\u6e90\u7535\u8def\u8bbe\u8ba1\u7684\u57fa\u7840\u77e5\u8bc6\u548c\u5b9e\u8df5\u4e2d\u7684\u6ce8\u610f\u4e8b\u9879\u3002 \u793a\u4f8b\u4e2d\u4f7f\u7528\u7684\u7ebf\u6027\u7a33\u538b\u5668IC \u4e3a\u4fbf\u4e8e\u8bf4\u660e\uff0c\u6211\u4eec\u5728\u793a\u4f8b\u4e2d\u4f7f\u7528\u5e38\u89c1\u7684\u7ebf\u6027\u7a33\u538b\u5668IC\u201cBA1117\u201d\u3002BA1117\u662f\u4e00\u6b3e\u652f\u6301\u6d6e\u52a8\u5de5\u4f5c\u7684\u53ef\u53d8 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