{"id":119353,"date":"2026-10-29T13:16:43","date_gmt":"2026-10-29T05:16:43","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/119353.html"},"modified":"2026-10-29T13:16:43","modified_gmt":"2026-10-29T05:16:43","slug":"htr3212-s-12-%e8%b7%af-led-pwm-%e9%a9%b1%e5%8a%a8%e5%99%a8%ef%bc%9a2-5-5-5v%e3%80%81%e6%af%8f%e8%b7%af-256-%e9%98%b6%e8%b0%83%e5%85%89%e3%80%8138ma-%e5%8f%82%e6%95%b0%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/119353.html","title":{"rendered":"HTR3212 (S) 12 \u8def LED PWM \u9a71\u52a8\u5668\uff1a2.5-5.5V\u3001\u6bcf\u8def 256 \u9636\u8c03\u5149\u300138mA \u53c2\u6570\u8be6\u89e3"},"content":{"rendered":"

\u6838\u5fc3\u4fe1\u606f
\nHTR3212 (S) \u662f Heroic（\u79be\u6da6\u7535\u5b50）\u63a8\u51fa\u7684 12 \u8def LED PWM \u9a71\u52a8\u5668\u3002\u8f93\u5165\u7535\u538b\u8303\u56f4 2.5\u20135.5V；\u6bcf\u8def\u6700\u5927\u8f93\u51fa\u7535\u6d41 38mA（\u5916\u7f6e R_EXT \u8bbe\u5b9a，4 \u6863\u7535\u6d41\u7f29\u653e）；\u6bcf\u8def 256 \u9636 PWM \u4eae\u5ea6\u72ec\u7acb\u8c03\u8282；I\u00b2C \u63a5\u53e3，\u652f\u6301\u8fde\u7eed\u5199\u6570\u636e\u4e0e\u5730\u5740\u81ea\u52a0；PWM \u9891\u7387 3kHz（\u9ed8\u8ba4）\/ 22kHz \u53ef\u9009；QFN-20L（3mm\u00d73mm）\u5c01\u88c5\u3002\u4f9d\u636e\u89c4\u683c\u4e66\u7279\u6027\u4e0e\u540c\u89c4\u683c\u5bf9\u7167，\u53ef\u517c\u5bb9\u66ff\u4ee3 IS31FL3206（Lumissil）\u4e0e SN3112-12（Si-En）\u540c\u7c7b 12 \u901a\u9053 LED \u9a71\u52a8\u65b9\u6848\u3002<\/p>\n

\u5173\u952e\u53c2\u6570（\u6d4b\u8bd5\u6761\u4ef6：TA=25\u2103\u3001VCC=3.6V，\u9664\u975e\u7279\u522b\u8bf4\u660e；\u6570\u636e\u6765\u6e90：HTR3212 \u5b98\u65b9\u89c4\u683c\u4e66 V0.5）<\/p>\n

– \u7535\u6e90\u7535\u538b VCC：2.5\u20135.5V
\n– \u6700\u5927\u5168\u5c40\u8f93\u51fa\u7535\u6d41 Imax：38mA（VCC=4.2V\u3001VOUT=0.8V\u3001REXT=2k\u03a9\u3001SL="00"）
\n– \u8f93\u51fa\u7535\u6d41 IOUT：23mA（VOUT=0.6V\u3001REXT=3.3k\u03a9\u3001SL="00"）
\n– \u6bcf\u8def\u7535\u6d41\u7f29\u653e：4 \u6863\u72ec\u7acb\u53ef\u9009（1\u30011\/2\u30011\/3\u30011\/4）
\n– PWM \u4eae\u5ea6\u8c03\u8282：\u6bcf\u8def 256 \u9636
\n– PWM \u9891\u7387：3kHz（\u9ed8\u8ba4）\/ 22kHz \u53ef\u9009
\n– I\u00b2C \u4ece\u673a\u5730\u5740：HTR3212S \u56fa\u5b9a 0111 000（\u4ec5\u5199）；HTR3212F \u7531 AD \u5f15\u811a\u8fde\u63a5\u51b3\u5b9a（4 \u4e2a\u5730\u5740\u53ef\u9009）
\n– I\u00b2C \u65f6\u949f\u9891\u7387：\u6700\u9ad8 400kHz
\n– \u9759\u6001\u7535\u6d41 ICC：5mA（\u5178\u578b\u503c，REXT=3.3k\u03a9）
\n– \u5173\u65ad\u7535\u6d41 ISD：1.7\u03bcA（\u5178\u578b\u503c，\u6700\u5927\u503c 5\u03bcA）
\n– \u8f93\u51fa\u6f0f\u7535\u6d41 IOZ：0.2\u03bcA（PWM=0\u3001VOUT=5.5V）
\n– \u70ed\u5173\u65ad\u6e29\u5ea6：160\u2103，\u8fdf\u6ede 20\u2103
\n– R_EXT \u5f15\u811a\u8f93\u51fa\u7535\u538b VEXT：1.2V
\n– \u5de5\u4f5c\u6e29\u5ea6\u8303\u56f4：-40\u2103～+85\u2103
\n– \u9759\u7535\u8010\u538b ESD（HBM）：\u00b18kV
\n– \u5c01\u88c5：QFN-20L（3mm\u00d73mm）<\/p>\n

\u529f\u80fd\u7279\u6027<\/p>\n

– 12 \u8def\u6052\u6d41\u901a\u9053，\u6bcf\u8def\u72ec\u7acb PWM \u63a7\u5236
\n– \u6bcf\u8def 256 \u9636 PWM \u4eae\u5ea6\u8c03\u8282：I_PWM = I_LUT \/ 256 \u00d7 \u03a3 D [n]\u00d72\u207f
\n– \u6bcf\u8def\u6700\u5927\u7535\u6d41\u72ec\u7acb 4 \u6863\u7f29\u653e（1\u30011\/2\u30011\/3\u30011\/4），\u53ef\u8bbe\u7f6e\u6bcf\u8def\u4eae\u5ea6\u6bd4\u4f8b
\n– \u5168\u5c40\u7535\u6d41\u7531\u5916\u63a5\u7535\u963b\u8bbe\u5b9a：IMAX = 63.3 \u00d7 1.2V \/ R_EXT
\n– I\u00b2C \u63a5\u53e3：\u652f\u6301\u8fde\u7eed\u5199\u6570\u636e\u3001\u5730\u5740\u81ea\u52a0\u3001\u5185\u7f6e\u590d\u4f4d\u5bc4\u5b58\u5668
\n– \u5173\u65ad\u65b9\u5f0f：SDB \u5f15\u811a\u62c9\u4f4e\u6216\u8f6f\u4ef6\u5173\u65ad；\u5173\u65ad\u540e I\u00b2C \u4ecd\u53ef\u5bf9\u5bc4\u5b58\u5668\u5199\u64cd\u4f5c
\n– \u5185\u7f6e\u8f6f\u4ef6\u590d\u4f4d\u5bc4\u5b58\u5668<\/p>\n

\u5178\u578b\u5e94\u7528<\/p>\n

– \u667a\u80fd\u97f3\u54cd
\n– \u65e0\u7ebf\u97f3\u54cd
\n– \u5e26 LED \u663e\u793a\u7684\u624b\u673a\u548c\u638c\u4e0a\u8bbe\u5907
\n– \u5bb6\u7535\u7c7b LED \u663e\u793a<\/p>\n

\u517c\u5bb9\u66ff\u4ee3\u5bf9\u7167<\/p>\n

– IS31FL3206（Lumissil Microsystems）：12 \u6052\u6d41\u901a\u9053\u3001\u6bcf\u901a\u9053\u6700\u5927 38mA\u3001256 \u9636 PWM\u3001I\u00b2C \u63a5\u53e3（4 \u4e2a\u5730\u5740\u53ef\u9009）\u3001QFN-20（3mm\u00d73mm）；\u5dee\u5f02：\u5de5\u4f5c\u7535\u538b 2.7\u20135.5V\u3001\u6e29\u5ea6\u8303\u56f4 -40\u2103～+125\u2103\u3001PWM \u9891\u7387 24kHz（\u9ed8\u8ba4）\/ 3.6kHz
\n– SN3112-12（Si-En \u77fd\u6069\u5fae\u7535\u5b50）：12 \u8def\u3001\u6bcf\u8def\u6700\u5927 38mA（REXT \u8bbe\u5b9a）\u3001256 \u7ea7\u4eae\u5ea6\u3001I\u00b2C \u63a5\u53e3（\u56fa\u5b9a\u4ece\u5730\u5740 1010 1000）\u3001QFN-20（3mm\u00d73mm）；\u5dee\u5f02：\u5de5\u4f5c\u7535\u538b 2.7\u20135.5V\u3001\u6e29\u5ea6\u8303\u56f4 -40\u2103～+85\u2103
\n– \u5bf9\u7167\u7ed3\u8bba：\u901a\u9053\u6570\u3001\u6bcf\u8def\u6700\u5927\u7535\u6d41\u3001PWM \u9636\u6570\u3001\u5c01\u88c5（QFN20，3mm\u00d73mm）\u4e00\u81f4；\u5dee\u5f02\u70b9\u5728\u7535\u6e90\u7535\u538b\u4e0b\u9650（2.5V \u5bf9 2.7V）\u3001\u5de5\u4f5c\u6e29\u5ea6\u8303\u56f4\u3001PWM \u9891\u7387\u6863\u4f4d\u4e0e I\u00b2C \u5730\u5740\u6570，\u5b9e\u9645\u66ff\u4ee3\u65f6\u6309\u7cfb\u7edf\u4f9b\u7535\u4e0e\u6e29\u5ea6\u6761\u4ef6\u6838\u5bf9<\/p>\n

\u8bbe\u8ba1\u6ce8\u610f\u4e8b\u9879<\/p>\n

– \u5168\u5c40\u7535\u6d41\u8bbe\u5b9a：IMAX = 63.3 \u00d7 1.2V \/ R_EXT；REXT \u6700\u5c0f\u63a8\u8350 2k\u03a9（\u5bf9\u5e94\u6700\u5927\u7535\u6d41 38mA），\u5178\u578b\u5e94\u7528 3.3k\u03a9（\u7ea6 23mA）
\n– VCC \u7535\u6e90\u5f15\u811a：\u63a5 0.1\u03bcF + 1\u03bcF \u7535\u5bb9\u5230\u5730
\n– SDA \/ SCL \u9700\u63a5\u4e0a\u62c9\u7535\u963b（\u5efa\u8bae 4.7k\u03a9），1.8V \/ 3.3V \u7cfb\u7edf\u5747\u53ef\u4f7f\u7528
\n– SDB \u5f15\u811a\u9700\u63a5 100k\u03a9 \u4e0b\u62c9\u7535\u963b，\u4f7f\u5f00\u673a\u9ed8\u8ba4\u4e3a\u4f4e\u7535\u5e73 GPIO \u63a7\u5236；\u62c9\u4f4e\u5373\u5173\u65ad
\n– I\u00b2C \u4ec5\u652f\u6301\u5199\u64cd\u4f5c；PWM \u4e0e LED \u63a7\u5236\u5bc4\u5b58\u5668\u6570\u636e\u5148\u5199\u5165\u4e34\u65f6\u5bc4\u5b58\u5668，\u5199 0x25 \u66f4\u65b0\u5bc4\u5b58\u5668\u540e\u914d\u7f6e\u751f\u6548
\n– PCB \u5e03\u7ebf\u5efa\u8bae\u82af\u7247\u8fdc\u79bb\u5929\u7ebf\u653e\u7f6e，\u9632\u6b62\u8f90\u5c04\u5e72\u6270<\/p>\n

\"\"<\/p>\n

\u8bf4\u660e
\n\u4ee5\u4e0a\u53c2\u6570\u6458\u81ea HTR3212 \u5b98\u65b9\u89c4\u683c\u4e66（Heroic，V0.5，2020-09），\u4f9b\u6280\u672f\u9009\u578b\u53c2\u8003\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u6838\u5fc3\u4fe1\u606f
\nHTR3212 (S) \u662f Heroic（\u79be\u6da6\u7535\u5b50）\u63a8\u51fa\u7684 12 \u8def LED PWM \u9a71\u52a8\u5668\u3002\u8f93\u5165\u7535\u538b\u8303\u56f4 2.5\u20135.5V；\u6bcf\u8def\u6700\u5927\u8f93\u51fa\u7535\u6d41 38mA（\u5916\u7f6e R_EXT \u8bbe\u5b9a，4 \u6863\u7535\u6d41\u7f29\u653e）；\u6bcf\u8def 256 \u9636 PWM \u4eae\u5ea6\u72ec\u7acb\u8c03\u8282；I\u00b2C \u63a5\u53e3，\u652f\u6301\u8fde\u7eed\u5199\u6570\u636e\u4e0e\u5730\u5740\u81ea\u52a0；PWM \u9891\u7387 3kHz（\u9ed8\u8ba4&#xff0<\/p>\n","protected":false},"author":2,"featured_media":119352,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[270,269,2400,977,1363],"topic":[],"class_list":["post-119353","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-270","tag-269","tag-2400","tag-977","tag-1363"],"yoast_head":"\nHTR3212 (S) 12 \u8def LED PWM \u9a71\u52a8\u5668\uff1a2.5-5.5V\u3001\u6bcf\u8def 256 \u9636\u8c03\u5149\u300138mA \u53c2\u6570\u8be6\u89e3 - 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