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LT8705
闁辫畝锛�8117鏅�(sh铆)闁擄細2013-08-19 14:26:13

銆�銆�LT8705鏁堢巼楂橀仈(d谩)98%鐨勫悓姝ラ檷澹�-鍗囧鍨� DC/DC鎺у埗鍣�锛岃┎鍣ㄤ欢鍙湪杓稿叆闆诲楂樹簬銆佷綆浜庢垨绛変簬杓稿嚭闆诲鐨勬儏娉佷笅閬�(y霉n)浣�銆傞�欏��(g猫)鍣ㄤ欢鐢� 4 鍊�(g猫)鍙嶉鐠�(hu谩n)璺締(l谩i)瑾�(di脿o)绡�(ji茅)杓稿叆闆绘祦/闆诲浠ュ強杓稿嚭闆绘祦/闆诲銆傝几鍏ラ浕娴佸拰闆诲鍙嶉鐠�(hu谩n)璺彲闃叉澶櫧(y谩ng)鑳�闆绘睜閬�(gu貌)杓�銆傝几鍑�闆绘祦鐠�(hu谩n)璺偤闆绘睜鍏呴浕鍣ㄦ垨闆绘祦婧�鎻愪緵绌�(w臎n)瀹氱殑杓稿嚭闆绘祦銆侺T8705 鍙娇鐢ㄥ湪澶氱ó鎳�(y墨ng)鐢ㄤ腑锛屼緥濡傞浕淇″拰姹借粖(ch膿)涓殑闆诲绌�(w臎n)瀹氬櫒銆佷互鍙婂お闄�(y谩ng)鑳芥垨楂橀樆鎶�闆绘簮鍜岄浕姹犵郴绲�(t菕ng)銆�

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銆�銆�LT8705 鍦� 2.8V 鑷� 80V 鐨勫杓稿叆闆诲鑼冨湇鍏�(n猫i)宸ヤ綔锛岀敘(ch菐n)鐢� 1.3V 鑷� 80V 杓稿嚭锛岄噰鐢ㄥ柈鍊�(g猫)闆绘劅鍣ㄥ拰 4 闁�(k膩i)闂�(gu膩n)鍚屾鏁存祦銆傜敤鍠��(g猫)鍣ㄤ欢鍙彁渚涢珮閬�(d谩) 250W 鐨勮几鍑哄姛鐜�銆傜暥(d膩ng)澶氬��(g猫)闆昏矾骞惰伅(li谩n)鏅�(sh铆)锛屽彲浠ュ(sh铆)鐝�(xi脿n)鏇村ぇ鐨勮几鍑哄姛鐜囥�傚伐浣滈牷鐜囧彲鍦� 100kHz 鑷� 400kHz 鑼冨湇鍏�(n猫i)閬告搰锛屼篃鍙悓姝ヨ嚦涓�鍊�(g猫)澶栭儴鏅�(sh铆)閻�銆侺T8705 閲囩敤灏�(zhu膩n)鏈夌殑闆绘祦妯″紡鎺у埗鏋舵(g貌u)锛屼互闄嶅鎴栧崌澹撴ā寮忓(sh铆)鐝�(xi脿n)鎭掑畾闋荤巼宸ヤ綔锛岃�屼笖鎻愪緵浜� 4 鍊�(g猫)寮�(qi谩ng)澶х殑鍏�(n猫i)缃� N 婧濋亾 MOSFET 鏌垫サ椹�(q奴)鍕�(d貌ng)鍣ㄣ�傜敤鎴�(h霉)鍙互閬告搰寮�(qi谩ng)鍒堕�ｇ簩(x霉)銆佹柗绾�(x霉)鍜岀獊鐧�(f膩)妯″紡 锛圔urst Mode?锛� 宸ヤ綔锛屼互闄愬害鍦版彁楂樿紩璨�(f霉)杓夋檪(sh铆)鐨勬晥鐜�銆�

銆�銆�LT8705 鍖呮嫭浼烘湇寮曡叧浠ユ寚绀洪偅鍊�(g猫)鍙嶉鐠�(hu谩n)璺檿浜庡伐浣滅媭鎱�(t脿i)銆侻ODE 寮曡叧鑳介伕鎿囩獊鐧�(f膩)妯″紡 锛圔urst Mode锛� 鎿嶄綔銆佷笉閫ｇ簩(x霉)鎴栭�ｇ簩(x霉)灏�(d菐o)閫氭ā寮� 锛堝湪杓曡級鏅�(sh铆)锛�銆傚叾浠栫壒榛�(di菐n)閭勫寘鎷竴鍊�(g猫) 3.3V/12A LDO銆佸悓姝ュ浐瀹氶牷鐜囥�佸収(n猫i)缃煹妤甸﹨(q奴)鍕�(d貌ng)鍣�銆佸彲瑾�(di脿o) UVLO 浠ュ強鍏峰彲绶ㄧ▼鍊肩殑杓稿叆鍜岃几鍑洪浕娴佺洠(ji膩n)瑕栧姛鑳�銆�

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銆�銆�鍠浕鎰熷櫒鏋舵(g貌u)鍏佽ū VIN 楂樹簬銆佷綆浜庢垨绛変簬绌�(w臎n)澹撶殑 VOUT

銆�銆�VIN 鑼冨湇锛�2.8V 锛堥渶瑕� EXTVCC > 6.4V锛� 鑷� 80V

銆�銆�VOUT 鑼冨湇锛�1.3V 鑷� 80V

銆�銆�鍥涜矾 N 婧濋亾 MOSFET 鏌垫サ椹�(q奴)鍕�(d貌ng)鍣�

銆�銆�鍚屾鏁存祦锛氭晥鐜囬珮閬�(d谩) 98%

銆�銆�杓稿叆鍜岃几鍑洪浕娴佺洠(ji膩n)瑕栧櫒寮曡叧

銆�銆�鍙悓姝ョ殑鍥哄畾闋荤巼锛�100kHz 鑷� 400kHz

銆�銆�闆嗘垚鍨嬭几鍏ラ浕娴�銆佽几鍏ラ浕澹�銆佽几鍑洪浕娴佸拰杓稿嚭闆诲鍙嶉鐠�(hu谩n)璺�

銆�銆�鏅�(sh铆)閻樿几鍑哄彲鐢ㄤ簬鐩�(ji膩n)瑕栬姱鐗囨韩搴�

銆�銆�閲囩敤 38 寮曡叧 锛�5mm x 7mm锛� QFN 灏佽鍜� TSSOP 灏佽 锛堝叾涓� TSSOP 灏佽閫�(j矛n)琛屼簡淇敼浠ユ敼鍠勯珮闆诲鎿嶄綔锛�

    

 

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