鎮ㄥソ锛屾杩庝締鍒扮董搴浕瀛愬競鍫寸恫(w菐ng)
鐧婚寗 | 鍏嶈不(f猫i)娉ㄥ唺
鏅傞枔锛�2024/2/26 17:38:29
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LM317LM鏄編鍦嬪湅瀹跺崐灏�(d菐o)楂斿叕鍙革紙National Semiconductor锛夋帹鍑虹殑涓�娆句綆鍔熻�椾笁绔┅(w臎n)澹撳櫒銆傚畠閲囩敤浜嗗浐瀹氱殑鍙嶉闆诲锛岃兘澶犻�氶亷澶栭儴闆婚樆瑾�(di脿o)绡�(ji茅)杓稿嚭闆诲锛屽叿鏈夎壇濂界殑婧害绌�(w臎n)瀹氭�у拰璨�(f霉)杓夎(di脿o)鏁寸壒鎬с�侺M317LM寤ｆ硾鎳�(y墨ng)鐢ㄤ簬鍚勭ó闆诲瓙瑷�(sh猫)鍌欎腑锛屽闆绘簮闆昏矾銆侀浕澹撹(di脿o)绡�(ji茅)鍣�銆侀浕娴侀檺鍒跺櫒绛夈��
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LM317LM鍖呭惈浜嗕竴鍊嬬┅(w臎n)澹撳櫒闆昏矾銆佷竴鍊嬮浕婧愰浕澹撹几鍏ョ銆佷竴鍊嬭(di脿o)绡�(ji茅)闆婚樆鍜屼竴鍊嬭几鍑虹銆傜┅(w臎n)澹撳櫒闆昏矾鐢变竴鍊嬮浕娴佹帶鍒堕儴鍒嗗拰涓�鍊嬮浕澹撴帶鍒堕儴鍒嗙祫鎴�銆傞浕娴佹帶鍒堕儴鍒嗚矤(f霉)璨�(z茅)鎺у埗杓稿嚭闆绘祦锛岄浕澹撴帶鍒堕儴鍒嗚矤(f霉)璨�(z茅)鎺у埗杓稿嚭闆诲銆傚湪宸ヤ綔鏅傦紝杓稿叆闆诲閫氶亷瑾�(di脿o)绡�(ji茅)闆婚樆閫�(j矛n)鍏ョ┅(w臎n)澹撳櫒闆昏矾銆傜┅(w臎n)澹撳櫒闆昏矾灏囪几鍏ラ浕澹撹綁(zhu菐n)鎻涚偤绌�(w臎n)瀹氱殑杓稿嚭闆诲锛屽苟閫氶亷杓稿嚭绔彁渚涚郸璨�(f霉)杓�銆傜暥(d膩ng)璨�(f霉)杓夎畩鍖栨檪锛岀┅(w臎n)澹撳櫒闆昏矾鏈冩牴鎿�(j霉)璨�(f霉)杓夌殑闇�姹傝嚜鍕曡(di脿o)鏁磋几鍑洪浕澹�锛屼互淇濇寔绌�(w臎n)瀹�銆�
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1銆佽几鍑洪浕澹撹寖鍦嶏細1.2V鑷�37V鍙(di脿o)
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銆�銆�3銆佽几鍏�-杓稿嚭宸锛氭渶澶х偤40V
銆�銆�4銆佺窔鎬ц(di脿o)鏁寸巼锛氶�氬父鐐�0.01%/V
銆�銆�5銆佺窔鎬ц矤(f霉)杓夎(di脿o)鏁寸巼锛氶�氬父鐐�0.1%/A
銆�銆�6銆佽几鍏ラ浕澹撹寖鍦嶏細3V鑷�40V
銆�銆�7銆佹韩搴﹁寖鍦嶏細-40鈩冭嚦+125鈩�
1銆佸彲瑾�(di脿o)绌�(w臎n)澹撳櫒锛氶�氶亷瑾�(di脿o)鏁撮浕闃讳締鏀硅畩杓稿嚭闆诲銆�
銆�銆�2銆佷綆澹撳樊锛氬湪澶у鏁�(sh霉)鎳�(y墨ng)鐢ㄤ腑锛岃几鍏ヨ垏杓稿嚭涔嬮枔鐨勫宸潪甯稿皬锛屽彲浠ユ彁渚涙洿楂樼殑鏁堢巼銆�
銆�銆�3銆佸収(n猫i)閮ㄩ亷杓変繚璀�(h霉)锛氱暥(d膩ng)璨�(f霉)杓夐亷澶ф檪锛屾渻鑷嫊鍒囨柗杓稿嚭浠ヤ繚璀�(h霉)鑺墖銆�
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LM317LM鐨勬噳(y墨ng)鐢ㄩ潪甯稿唬娉�锛屽寘鎷絾涓嶉檺浜庝互涓嬪咕鍊嬫柟闈細
銆�銆�1銆侀浕婧愮┅(w臎n)澹擄細鐢变簬LM317LM鍏锋湁杓稿嚭闆诲鍙(di脿o)鐨勭壒榛�锛屽洜姝ゅ父鐢ㄤ簬闇�瑕佺┅(w臎n)瀹氳几鍑洪浕澹撶殑闆绘簮闆昏矾涓紝濡傚悇绋浕瀛愯ō(sh猫)鍌欑殑闆绘簮妯″銆�
銆�銆�2銆佸彲瑾�(di脿o)闆诲婧愶細LM317LM鍙互閫氶亷瑾�(di脿o)鏁村閮ㄩ浕闃讳締瀵︾従(xi脿n)鍙(di脿o)鐨勮几鍑洪浕澹�锛屽洜姝ゅ彲鐢ㄤ綔鍙(di脿o)闆诲婧�锛屽唬娉涙噳(y墨ng)鐢ㄤ簬鍚勭ó娓│銆佹脯閲忋�佹牎婧�(zh菙n)绛夐牁(l菒ng)鍩�銆�
銆�銆�3銆侀浕姹犲厖闆诲櫒锛氱敱浜嶭M317LM鍏锋湁杓冮珮鐨勮几鍑洪浕娴佽兘鍔涳紝鍙敤浜庤ō(sh猫)瑷堝悇绋浕姹犲厖闆诲櫒锛屽閶伴浕姹犲厖闆诲櫒銆侀墰閰搁浕姹犲厖闆诲櫒绛�銆�
銆�銆�4銆侀浕瀛愬剙鍣細LM317LM鍙敤浜庤ō(sh猫)瑷堝悇绋浕瀛愬剙鍣ㄤ腑锛屽淇¤櫉鐧�(f膩)鐢熷櫒銆佹斁澶у櫒銆佹烤娉㈠櫒绛�銆�
銆�銆�5銆佺劇绶氶�氫俊瑷�(sh猫)鍌欙細鐢变簬LM317LM鍏锋湁浣庡姛鑰�銆侀珮绌�(w臎n)瀹氭�х殑鐗归粸锛屽彲鐢ㄤ簬鐒＄窔閫氫俊瑷�(sh猫)鍌欎腑鐨勯浕婧愭ā濉婅ō(sh猫)瑷堛��
LM317LM鏄竴绋(di脿o)绡�(ji茅)闆诲鐨勭窔鎬х┅(w臎n)澹撳櫒鑺墖锛屽唬娉涙噳(y墨ng)鐢ㄤ簬鍚勭ó闆诲瓙瑷�(sh猫)鍌欎腑銆傚湪瀹夎LM317LM鏅�锛岄渶瑕佹敞鎰忎互涓嬭榛烇細
銆�銆�1銆佺⒑瑾�(r猫n)鑺墖鏂瑰悜锛歀M317LM鍏锋湁涓夊�嬪紩鑵筹紝鍒嗗垾鏄几鍏ワ紙VIN锛�銆佽几鍑猴紙VOUT锛夊拰鍦帮紙GND锛夈�傚湪瀹夎涔嬪墠锛岀⒑淇濇纰鸿瓨鍒ヨ姱鐗囩殑寮曡叧甯冨眬锛屽苟灏囧叾姝ｇ⒑鎻掑叆闆昏矾鏉�銆�
銆�銆�2銆佷緵闆婚浕婧愶細LM317LM闇�瑕佸閮ㄩ浕婧愪締鎻愪緵宸ヤ綔闆诲銆傝几鍏ュ紩鑵筹紙VIN锛夐�ｆ帴鍒版鍚戦浕婧�锛岄�氬父鏄浕姹犳垨绌�(w臎n)澹撻浕婧愮殑姝ｆサ銆傚湴寮曡叧锛圙ND锛夐�ｆ帴鍒拌矤(f霉)鍚戦浕婧�锛岄�氬父鏄浕姹犳垨绌�(w臎n)澹撻浕婧愮殑璨�(f霉)妤�銆�
銆�銆�3銆佽几鍑洪浕澹撹ō(sh猫)缃細LM317LM鍙互閫氶亷瑾�(di脿o)鏁村叾杓稿嚭闆婚樆渚嗚ō(sh猫)缃几鍑洪浕澹�銆傚湪杓稿嚭寮曡叧锛圴OUT锛夊拰鍦板紩鑵筹紙GND锛変箣闁�锛岄�ｆ帴涓�鍊嬮浕闃�锛屽叾鍊煎彲浠ユ牴鎿�(j霉)鎵�闇�鐨勮几鍑洪浕澹撲締纰哄畾銆傚叿楂旂殑瑷堢畻鍏紡鐐猴細VOUT = 1.25V 脳 (1 + R2/R1)锛屽叾涓璕1鐐鸿几鍑虹鐨勯浕闃�锛孯2鐐哄湴寮曡叧锛圙ND锛夊埌闆婚樆鐨勯浕闃汇��
銆�銆�4銆佹暎鐔辫檿鐞嗭細鐢变簬LM317LM鍦ㄥ伐浣滈亷绋嬩腑鏈冪敘(ch菐n)鐢熶竴瀹氱殑鐔遍噺锛屽洜姝ら渶瑕侀��(j矛n)琛屾暎鐔辫檿鐞嗕互纰轰繚鑺墖鐨勬甯稿伐浣�?锛熸ⅱ閰濄劅^灏囪姱鐗囧畨瑁濆湪鏁ｇ啽鐗囦笂锛屾垨鑰呬娇鐢ㄦ暎鐔卞櫒渚嗘彁楂樻暎鐔辨晥鏋溿��
銆�銆�5銆佺⒑淇濋浕璺澘甯冨眬鑹ソ锛氬湪瀹夎LM317LM鏅�锛岀⒑淇濋浕璺澘鐨勫竷灞�鑹ソ锛岄伩鍏嶅紩鑵充箣闁撶殑鐭矾鎴栬鎺�銆傚悓鏅傦紝閭勬噳(y墨ng)娉ㄦ剰閬垮厤闆昏矾鏉夸笂鐨勯珮闋诲櫔鑱插共鎿�銆�
銆�銆�6銆佹敞鎰忓伐浣滅挵(hu谩n)澧冿細鍦ㄥ畨瑁滾M317LM鏅傦紝鎳�(y墨ng)娉ㄦ剰宸ヤ綔鐠�(hu谩n)澧冪殑婧害鍜屾繒搴�銆侺M317LM鐨勫伐浣滄韩搴﹁寖鍦嶇偤0鈩冭嚦125鈩冿紝鍦ㄨ秴鍑鸿┎鑼冨湇鐨勭挵(hu谩n)澧冧腑浣跨敤鍙兘灏�(d菐o)鑷磋姱鐗囨悕澹�銆�
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