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鎮ㄥソ锛屾杩庝締(l谩i)鍒扮董搴�(k霉)闆诲瓙甯傚牬(ch菐ng)缍�(w菐ng) 鐧婚寗 | 鍏嶈不(f猫i)娉ㄥ唺(c猫)

鎮ㄦ墍鍦ㄧ殑浣嶇疆锛�闆诲瓙鍏冨櫒浠堕噰璩�(g貌u)缍�(w菐ng) > IC鐧剧 > LM2840

LM2840 鐧�(f膩)甯冩檪(sh铆)闁� 鏅�(sh铆)闁擄細2025/5/6 16:14:53 鏌ョ湅 闁辫畝锛�28

LM2840鏄竴绋珮鏁堢殑鍚屾闄嶅鐩存祦-鐩存祦杞�(zhu菐n)鎻涘櫒锛屽皥(zhu膩n)鐐洪﹨(q奴)鍕�(d貌ng)澶у姛鐜嘗ED鑰岃ō(sh猫)瑷�(j矛)銆傝┎鍣ㄤ欢闆嗘垚浜嗛珮閭婂拰浣庨倞MOSFET闁�(k膩i)闂�(gu膩n)锛屼互鎻愪緵楂橀仈(d谩)1A鐨勯�ｇ簩(x霉)杓稿嚭闆绘祦銆傚叾宸ヤ綔杓稿叆闆诲鑼冨湇鐐�5.5V鑷�36V锛屽苟鑳芥壙鍙楁渶楂橀仈(d谩)40V鐨勭灛鎱�(t脿i)闆诲銆傛澶�锛孡M2840閲囩敤鎭掑畾闋荤巼闆绘祦妯″紡鏋舵(g貌u)锛屽叿鏈夊揩閫熺灛鎱�(t脿i)闊挎噳(y墨ng)鍜屽崜瓒婄殑绶氳矾鍙婅矤(f霉)杓夎(di脿o)绡�(ji茅)鑳藉姏銆�
銆�銆�瑭茶姱鐗囧収(n猫i)缃簡澶氱ó淇濊(h霉)鍔熻兘锛屽寘鎷煭璺繚璀�(h霉)銆侀亷(gu貌)婧棞(gu膩n)鏂峰拰闁�(k膩i)璺娓�(c猫)锛屽緸鑰屾彁楂樹簡绯荤当(t菕ng)鐨勫彲闈犳��銆傚叾鍙(di脿o)鐨勯枊(k膩i)闂�(gu膩n)闋荤巼锛堟渶楂樺彲閬�(d谩)1MHz锛夊厑瑷变娇鐢ㄥ皬鍨嬪閮ㄥ厓浠�锛岄��(j矛n)涓�姝ョ府灏忎簡鏁撮珨瑙ｆ焙鏂规鐨勫昂瀵搞��

鍙冩暩(sh霉)

杓稿叆闆诲鑼冨湇锛�5.5V-36V
銆�銆�鏈�澶ц几鍏ラ浕澹擄細40V
銆�銆�杓稿嚭闆绘祦锛�1A閫ｇ簩(x霉)
銆�銆�闁�(k膩i)闂�(gu膩n)闋荤巼锛氬彲瑾�(di脿o)锛屾渶楂�1MHz
銆�銆�灏佽褰㈠紡锛歋OIC-8
銆�銆�宸ヤ綔鏁堢巼锛氶珮閬�(d谩)93%
銆�銆�宸ヤ綔婧害鑼冨湇锛�-40鈩冭嚦+125鈩�

鐗规��

LM2840鐨勪富瑕佺壒鎬у寘鎷互涓嬪咕榛�(di菐n)锛�
銆�銆�1. 鍏�(n猫i)缃珮閭婂拰浣庨倞MOSFET闁�(k膩i)闂�(gu膩n)锛岀劇(w煤)闇�椤嶅鐨勯﹨(q奴)鍕�(d貌ng)闆昏矾銆�
銆�銆�2. 楂樻晥鍚屾鏁存祦鎶�琛�(sh霉)锛岀⒑淇濆湪瀵几鍏ラ浕澹撹寖鍦嶅収(n猫i)淇濇寔楂樻晥鐜�銆�
銆�銆�3. 鏀寔PWM瑾�(di脿o)鍏夊拰妯℃摤瑾�(di脿o)鍏夊姛鑳�锛屼究浜庡(sh铆)鐝�(xi脿n)绮剧⒑鐨勪寒搴︽帶鍒躲��
銆�銆�4. 鎭掑畾闋荤巼闆绘祦妯″紡鎺у埗锛屾湁鍔╀簬绨�(ji菐n)鍖栫挵(hu谩n)璺(b菙)鍎熷苟鎻愰珮绌�(w臎n)瀹氭�с��
銆�銆�5. 鍙法绋嬮枊(k膩i)闂�(gu膩n)闋荤巼锛屽厑瑷辫ō(sh猫)瑷�(j矛)甯劒(y艒u)鍖朠CB甯冨眬鍜岄伕鎿囧悎閬╃殑闆绘劅鍊笺��
銆�銆�6. 瀹屽倷鐨勪繚璀�(h霉)鍔熻兘锛屽鐭矾淇濊(h霉)銆侀亷(gu貌)婧繚璀�(h霉)浠ュ強闁�(k膩i)璺疞ED妾㈡脯(c猫)锛屾彁鍗囦簡绯荤当(t菕ng)閬�(y霉n)琛岀殑瀹夊叏鎬с��

鎳�(y墨ng)鐢�

LM2840閬╃敤浜庡绋渶瑕侀珮鏁圠ED椹�(q奴)鍕�(d貌ng)鐨勬噳(y墨ng)鐢ㄥ牬(ch菐ng)鏅�锛屼緥濡傦細
銆�銆�1. 鑳屽厜鐓ф槑锛氱敤浜庢恫鏅堕’绀哄櫒鎴栨姇褰卞剙鐨勮儗鍏夋ā濉�銆�
銆�銆�2. 宸ユキ(y猫)鐓ф槑锛氭敮鎸侀珮浜害LED鐕堝叿鐨勯﹨(q奴)鍕�(d貌ng)锛屽宸ュ粻鍏�(n猫i)鐨凩ED鐓ф槑銆�
銆�銆�3. 姹借粖(ch膿)闆诲瓙锛氬彲鐢ㄤ簬姹借粖(ch膿)鍏�(n猫i)閮�?j墨)x琛ㄧ洡(p谩n)鑳屽厜銆佸熬鐕堟垨杞�(zhu菐n)鍚戠噲绛夈��
銆�銆�4. 娑堣不(f猫i)椤�(l猫i)闆诲瓙鐢�(ch菐n)鍝侊細渚挎敎寮忚ō(sh猫)鍌欎腑鐨勯’绀哄睆鑳屽厜鎴栨寚绀虹噲銆�
銆�銆�5. 鍏朵粬闋�(l菒ng)鍩燂細鎳�(y墨ng)鎬ョ収鏄�銆佷俊铏�(h脿o)鐕�銆佸缓绛戣椋剧収鏄庣瓑闇�瑕佺簿纰洪浕娴佹帶鍒剁殑鍫�(ch菐ng)鍚�銆�

鏇夸唬鍨嬭櫉(h脿o)

LM3405, APW7150, LT3474

lm2840鎺ㄨ枽渚涙噳(y墨ng)鍟� 鏇村>

  • 鐢�(ch菐n)鍝佸瀷铏�(h脿o)
  • 渚涙噳(y墨ng)鍟�
  • 鏁�(sh霉)閲�
  • 寤犲晢
  • 灏佽/鎵硅櫉(h脿o)
  • 瑭㈠児(ji脿)

lm2840璩囨枡 鏇村>

  • 鍨嬭櫉(h脿o)
  • 鎻忚堪
  • 鍝佺墝
  • 闁辫涓嬭級