{"id":9375,"date":"2022-08-24T15:10:23","date_gmt":"2022-08-24T07:10:23","guid":{"rendered":"http:\/\/www.szryc.com\/?p=9375"},"modified":"2022-08-24T15:10:23","modified_gmt":"2022-08-24T07:10:23","slug":"%e4%bd%bf%e7%94%a8mic29302%e6%9e%84%e5%bb%baldo%e7%a8%b3%e5%8e%8b%e5%99%a8%e6%88%96%e4%bd%8e%e5%8e%8b%e5%b7%ae%e7%a8%b3%e5%8e%8b%e5%99%a8%e7%94%b5%e8%b7%af","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=9375","title":{"rendered":"\u4f7f\u7528MIC29302\u6784\u5efaLDO\u7a33\u538b\u5668\u6216\u4f4e\u538b\u5dee\u7a33\u538b\u5668\u7535\u8def"},"content":{"rendered":"<p>\u65e0\u8bba\u662f\u60a8\u7684\u7b14\u8bb0\u672c\u7535\u8111\u3001\u7535\u89c6\u3001\u667a\u80fd\u624b\u673a\u8fd8\u662f\u4efb\u4f55\u5176\u4ed6<u>\u7535\u5b50<\/u>\u8bbe\u5907\uff0c\u5b83\u4eec\u90fd\u5728\u4e0d\u540c\u7684\u7535\u538b\u4e0b\u5de5\u4f5c\u3002\u8fd9\u4e9b\u8bbe\u5907\u5177\u6709\u5728\u975e\u5e38\u4f4e\u7684\u7535\u538b\u4e0b\u5de5\u4f5c\u7684\u654f\u611f\u7ec4\u4ef6\uff0c\u4f8b\u5982\u5fae\u5904\u7406\u5668\u3001IC 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src=\"http:\/\/www.szryc.com\/wp-content\/uploads\/2022\/08\/pYYBAGMEjxSAcF7KAAB_jqrtvos254.png\" alt=\"pYYBAGMEjxSAcF7KAAB_jqrtvos254\" width=\"720\" height=\"282\" srcset=\"http:\/\/www.szryc.com\/wp-content\/uploads\/2022\/08\/pYYBAGMEjxSAcF7KAAB_jqrtvos254.png 720w, http:\/\/www.szryc.com\/wp-content\/uploads\/2022\/08\/pYYBAGMEjxSAcF7KAAB_jqrtvos254-300x118.png 300w\" sizes=\"(max-width: 720px) 100vw, 720px\" \/><\/p>\n<p>\u8fd9\u79cd\u4f4e\u538b\u5dee\u7a33\u538b\u5668\u7535\u8def\u53ea\u9700\u8981\u5f88\u5c11\u7684\u7ec4\u4ef6\u3002\u5728\u8fd9\u4e2a\u7535\u8def\u4e2d\uff0c\u6211\u4eec\u53ea\u4f7f\u7528\u4e86\u4e24\u4e2a\u7535\u963b\u548c\u4e24\u4e2a<u>\u7535\u5bb9<\/u>\u3002\u7535\u5bb9C1\u8fde\u63a5\u5230MIC29302\u7a33\u538bIC\u7684Vin\u5f15\u811a\uff0c\u7528\u4e8e\u76f4\u6d41\u8f93\u5165\u7535\u538b\u7684\u6ee4\u6ce2\u3002\u4e24\u4e2a\u5916\u90e8\u7535\u963b R1 \u548c RV1 \u8fde\u63a5\u5230 IC \u7684\u8c03\u6574\u5f15\u811a\u548c Vout \u5f15\u811a\u3002<u>\u7535\u963b\u5668<\/u>\u00a0R1 \u548c RV1 \u51b3\u5b9a\u7a33\u538b\u5668\u7684\u8f93\u51fa\u7535\u538b Vout\u3002\u8f93\u51fa\u7aef\u7684 10uF \u7535\u5bb9\u7528\u4e8e\u7a33\u5b9a\u548c\u6700\u5c0f\u8f93\u51fa\u566a\u58f0\u3002<\/p>\n<p>MIC29302\u7a33\u538b\u5668IC<\/p>\n<p>MIC29302\u662f\u4e00\u6b3e\u53ef\u8c03\u4e94\u811a\u7a33\u538bIC\uff0c\u8f93\u51fa<u>\u7535\u6d41<\/u>\u9ad8\u8fbe3A\uff0c\u6ee1\u8f7d\u538b\u964d450mV\u3002MIC29302\u7a33\u538b\u5668\u5e26\u6709TTL\u903b\u8f91\u4f7f\u80fd\u5f15\u811a\uff0c\u53ef\u5728\u4e0d\u4f7f\u7528\u65f6\u5173\u95ed\u7a33\u538b\u5668\uff1b\u8fd9\u4f7f\u5176\u9002\u7528\u4e8e<u>\u7535\u6c60<\/u>\u4f9b\u7535\u8bbe\u5907\u548c\u7ebf\u6027\u7535\u538b\u7535\u6e90\u3002MIC29302 \u6709\u4e00\u4e2a\u8c03\u6574\u5f15\u811a\uff0c\u901a\u8fc7\u8be5\u5f15\u811a\u53ef\u4ee5\u4f7f\u7528\u4e24\u4e2a\u5916\u90e8\u7535\u963b\u5668\u5c06\u8f93\u51fa\u7535\u538b\u8bbe\u7f6e\u5728 1.24V \u81f3 15V \u4e4b\u95f4\u3002<\/p>\n<p>MIC29302 \u53d7\u5230\u5168\u9762\u4fdd\u62a4\uff0c\u53ef\u9632\u6b62\u53cd\u5411\u8f93\u5165\u6781\u6027\u3001\u8fc7\u6d41\u6545\u969c\u3001\u53cd\u5411\u5f15\u7ebf\u63d2\u5165\u548c\u8fc7\u70ed\u64cd\u4f5c\u3002\u5176\u5de5\u4f5c\u548c\u50a8\u5b58\u6e29\u5ea6\u8303\u56f4\u4e3a -40 \u81f3 125 \u00b0C\uff0c\u91c7\u7528 TO-263 \u548c TO-252 \u5c01\u88c5\u3002<\/p>\n<p>MIC29302\u7684\u8f93\u51fa\u7535\u538b\u8303\u56f4\u4e3a1.24V\u81f315V DC\uff0c\u8f93\u5165\u7535\u538b\u8303\u56f4\u4e3a3v\u81f316v\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u901a\u8fc7\u7a33\u538b\u5668\u7684 ADJ \u5f15\u811a\u8fde\u63a5\u7684\u4e24\u4e2a\u5916\u90e8\u7535\u963b\u5668\u6765\u6839\u636e\u60a8\u7684\u8981\u6c42\u8c03\u6574\u8f93\u51fa\u7535\u538b\u3002\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u4ee5\u4e0b\u516c\u5f0f\u8ba1\u7b97\u8f93\u51fa\u7535\u538b\uff1a<\/p>\n<p>V\u8f93\u51fa= 1.25 \uff08R 1 \/R 2 + 1\uff09<\/p>\n<p>\u4f8b\u5982\uff0c\u6211\u4eec\u5c06 12V \u4f5c\u4e3a\u8f93\u5165\u5e76\u5e0c\u671b 5V \u4f5c\u4e3a\u8f93\u51fa\uff0c\u56e0\u6b64\u5982\u679c R1 \u4e3a 1k\u03a9\uff0c\u5219 R2 \u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u516c\u5f0f\u8ba1\u7b97\uff1a<\/p>\n<p>R1\/R2 = {\uff08Vout \/ 1.25\uff09 \u2013 1}<\/p>\n<p>1000\/R2 = {\uff085 \/ 1.25\uff09 \u2013 1}<\/p>\n<p>R2 = 1000\/3<\/p>\n<p>R2 = 333.33<\/p>\n<p>\u56e0\u6b64\uff0c\u5bf9\u4e8e 5v \u8f93\u51fa\u7535\u538b\uff0c\u6211\u4eec\u9700\u8981\u5728 R2 \u5904\u8fde\u63a5 333 \u03a9 \u7535\u963b\u3002<\/p>\n<p>\u5f15\u811a\u914d\u7f6e<\/p>\n<p align=\"center\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9379\" title=\"pYYBAGMEjw-AAnZJAAB3P1Buy9A330\" src=\"http:\/\/www.szryc.com\/wp-content\/uploads\/2022\/08\/pYYBAGMEjw-AAnZJAAB3P1Buy9A330.png\" alt=\"pYYBAGMEjw-AAnZJAAB3P1Buy9A330\" width=\"720\" height=\"352\" srcset=\"http:\/\/www.szryc.com\/wp-content\/uploads\/2022\/08\/pYYBAGMEjw-AAnZJAAB3P1Buy9A330.png 720w, http:\/\/www.szryc.com\/wp-content\/uploads\/2022\/08\/pYYBAGMEjw-AAnZJAAB3P1Buy9A330-300x147.png 300w\" sizes=\"(max-width: 720px) 100vw, 720px\" \/><\/p>\n<p>\u4f4e\u538b\u5dee\u7a33\u538b\u5668\u7684\u5de5\u4f5c<\/p>\n<p>\u7a33\u538b\u5668\u7531\u4e09\u4e2a\u4e3b\u8981\u90e8\u4ef6\u7ec4\u6210\uff0c\u5373\u901a\u8fc7\u5143\u4ef6\u3001\u8bef\u5dee<u>\u653e\u5927\u5668<\/u>\u548c\u53c2\u8003\u7535\u538b\u6e90\u3002\u901a\u5e38\uff0c\u901a\u8fc7\u5143\u4ef6\u662f N \u6c9f\u9053\u6216 P \u6c9f\u9053 FET\uff0c\u4f46\u5728 MIC29302 \u7a33\u538b\u5668\u4e2d\uff0c\u5b83\u662fPNP\u00a0<u>\u6676\u4f53\u7ba1<\/u>\u3002\u8f93\u5165\u7535\u538b\u65bd\u52a0\u5230\u8fde\u63a5\u5230\u8bef\u5dee\u653e\u5927\u5668\u7684 PNP\u00a0<u>\u6676\u4f53<\/u>\u7ba1\u4e0a\u3002\u8be5\u6676\u4f53\u7ba1\u5728\u7ebf\u6027\u533a\/\u6709\u6e90\u533a\u5de5\u4f5c\uff0c\u4ee5\u5c06\u8f93\u5165\u7535\u538b\u964d\u4f4e\u5230\u6240\u9700\u7684\u8f93\u51fa\u7535\u538b\u3002\u8bef\u5dee\u653e\u5927\u5668\u68c0\u6d4b\u4ea7\u751f\u7684\u8f93\u51fa\u7535\u538b\u5e76\u5c06\u5176\u4e0e\u53c2\u8003\u7535\u538b\u8fdb\u884c\u6bd4\u8f83\u3002\u8bef\u5dee\u653e\u5927\u5668\u5c06\u6676\u4f53\u7ba1\u66f4\u6539\u4e3a\u9002\u5f53\u7684\u5de5\u4f5c\u70b9\uff0c\u4ee5\u786e\u4fdd\u8f93\u51fa\u5904\u4e8e\u6b63\u786e\u7684\u7535\u538b\u3002\u5f53\u8f93\u5165\u7535\u538b\u53d1\u751f\u53d8\u5316\u65f6\uff0c\u8bef\u5dee\u653e\u5927\u5668\u4f1a\u8c03\u5236\u6676\u4f53\u7ba1\u4ee5\u4fdd\u6301\u6052\u5b9a\u7684\u8f93\u51fa\u7535\u538b\u3002<\/p>\n<p>MIC29302\u7a33\u538b\u5668IC\u6846\u56fe\u5982\u4e0b\u3002<\/p>\n<p align=\"center\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9378\" title=\"poYBAGMEjwuAR7GpAACbh9WoQi0125\" src=\"http:\/\/www.szryc.com\/wp-content\/uploads\/2022\/08\/poYBAGMEjwuAR7GpAACbh9WoQi0125.png\" alt=\"poYBAGMEjwuAR7GpAACbh9WoQi0125\" width=\"645\" height=\"244\" srcset=\"http:\/\/www.szryc.com\/wp-content\/uploads\/2022\/08\/poYBAGMEjwuAR7GpAACbh9WoQi0125.png 645w, http:\/\/www.szryc.com\/wp-content\/uploads\/2022\/08\/poYBAGMEjwuAR7GpAACbh9WoQi0125-300x113.png 300w\" sizes=\"(max-width: 645px) 100vw, 645px\" \/><\/p>\n<p>\u8fd9\u5c31\u662f LDO \u7a33\u538b\u5668\u6216\u4f4e\u538b\u5dee\u7a33\u538b\u5668\u7535\u8def\u7684\u5de5\u4f5c\u539f\u7406\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u65e0\u8bba\u662f\u60a8\u7684\u7b14\u8bb0\u672c\u7535\u8111\u3001\u7535\u89c6\u3001\u667a\u80fd\u624b\u673a\u8fd8\u662f\u4efb\u4f55\u5176\u4ed6\u7535\u5b50\u8bbe\u5907\uff0c\u5b83\u4eec\u90fd\u5728\u4e0d\u540c\u7684\u7535\u538b\u4e0b\u5de5\u4f5c\u3002\u8fd9\u4e9b\u8bbe\u5907\u5177\u6709\u5728\u975e\u5e38\u4f4e\u7684\u7535\u538b [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[],"_links":{"self":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/9375"}],"collection":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9375"}],"version-history":[{"count":1,"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/9375\/revisions"}],"predecessor-version":[{"id":9380,"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/9375\/revisions\/9380"}],"wp:attachment":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9375"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9375"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9375"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}