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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)

LTC3569
闁辫畝锛�4396鏅�(sh铆)闁擄細2010-12-31 09:19:42

銆�銆�LTC3569鏄竴娆鹃仼鐢ㄤ簬鎵嬫寔寮忚ō(sh猫)鍌欑殑绶婃箠鍨�闆绘簮瑙ｆ焙鏂规銆傚叾绾栧阀鍨� 3mm x 3mm QFN 灏佽涓収(n猫i)缃簡涓夊��(g猫)鍏锋湁鍙柈鐛�(d煤)绶ㄧ▼杓稿嚭闆诲鐨勯檷澹撳瀷 (Buck) 绌�(w臎n)澹撳櫒銆備竴鍊�(g猫)绌�(w臎n)澹撳櫒鍙敮鎸侀珮閬�(d谩) 1200mA 鐨勮矤(f霉)杓夐浕娴�锛岃�屽叾浠栧叐鍊�(g猫)绌�(w臎n)澹撳櫒鍓囧彲鏀寔鑷� 600mA 鐨勮矤(f霉)杓夐浕娴�?锛熸ⅱ鍥钃氣偓(g猫)绌�(w臎n)澹撳櫒骞惰伅(li谩n)璧蜂締(l谩i)浣跨敤浠ユ彁鍗囪矤(f霉)杓夎兘鍔�銆傛瘡鍊�(g猫)闆绘祦妯″紡绌�(w臎n)澹撳櫒鍦ㄥ収(n猫i)閮ㄩ��(j矛n)琛岃(b菙)鍎�锛屽叿鏈夊崜瓒婄殑璨�(f霉)杓夊拰闆诲瑾�(di脿o)绡�(ji茅)鎬ц兘銆傚畬鏁寸殑鍏╄几鍑烘垨涓夎几鍑鸿В姹烘柟妗堝彧闇�鏁�(sh霉)鐩サ灏戠殑澶栭儴鐒�(w煤)婧愬厓浠�銆�

杓稿嚭闆诲

銆�銆�LTC3569 鐨勪笁鍊�(g猫)杓稿嚭闆诲鍙啊(ji菐n)鍠湴閫氶亷(gu貌)灏�(du矛)鍏跺悇鑷殑浣胯兘寮曡叧閫�(j矛n)琛岄枊闂�(gu膩n)鍒囨彌渚�(l谩i)鐛�(d煤)绔嬬法绋�銆傛瘡娆＄暥(d膩ng)鏌愬��(g猫)浣胯兘寮曡叧閬囧埌涓�鍊�(g猫)涓嬮檷娌挎檪(sh铆)锛屽墖灏�(du矛)涓�鍊�(g猫) 4 浣嶈▓(j矛)鏁�(sh霉)鍣ㄩ��(j矛n)琛岄仦娓涜▓(j矛)鏁�(sh霉)銆傚湪缍�(j墨ng)閬�(gu貌)涓�鍊�(g猫) 120渭s 鐨勮秴鏅�(sh铆)寤堕伈涔嬪悗 (寰炰娇鑳藉紩鑵充笂鐨勪竴鍊�(g猫)涓婂崌娌跨畻璧�)锛岃▓(j矛)鏁�(sh霉)鍣ㄧ殑鐙�鎱�(t脿i)灏囬帠瀛樿嚦鍙嶉鍩烘簴(zh菙n)闆诲 DAC 涓�傞�欐ǎ锛屽氨鑳藉鍦� 800mV (鍏ㄦ(bi膩o)搴�) 鑷� 425mV 鐨勮寖鍦嶅収(n猫i)浠� 25mV 姝ラ��(j矛n)灏�(du矛)鍩烘簴(zh菙n)闆诲瀵�(sh铆)鏂界法绋�銆�

骞惰伅(li谩n)鍔熺巼绱�(j铆)

銆�銆�LTC3569 鐨勯檷澹撳瀷绌�(w臎n)澹撳櫒鍙�熷姪骞惰伅(li谩n)鐨勬柟寮忎締(l谩i)鎻愪緵杓冮珮鐨勮矤(f霉)杓夎兘鍔涖�傞�氶亷(gu貌)鎶婂叐鍊�(g猫) 600mA 绌�(w臎n)澹撳櫒涔嬩竴鐨勫弽楗嬪紩鑵抽浕骞充笂鎷夎嚦杓稿叆闆绘簮闆诲锛岃┎绌�(w臎n)澹撳櫒鐨勫姛鐜囩礆(j铆)灏囪閲嶆柊閰嶇疆鐐轰竴鍊�(g猫)寰炲爆闆绘簮锛屾鏅�(sh铆)闁嬮棞(gu膩n)鎿嶄綔琚悓姝ヨ嚦鍏朵笂娓镐富鎺у櫒銆侭uck 2 鍙互鏄� Buck 1 鐨勪竴鍊�(g猫)寰炲爆闆绘簮锛屾垨 Buck 3 鏄� Buck 2 鐨勪竴鍊�(g猫)寰炲爆闆绘簮銆傜暥(d膩ng)閬�(y霉n)浣滀簬寰炲爆妯″紡鏅�(sh铆)锛屽緸灞枊闂�(gu膩n)寮曡叧鑸囦富鎺ч枊闂�(gu膩n)寮曡叧鐩稿苟鑱�(li谩n)锛屼笖杓稿嚭闆绘祦鐩稿姞銆傞�欏皣鐢�(ch菐n)鐢熶笁绋彲鑳界殑绲勫悎锛氫笁鍊�(g猫)鐛�(d煤)绔嬬殑绌�(w臎n)澹撳櫒(涓�鍊�(g猫) 1.2A 闄嶅鍨嬬┅(w臎n)澹撳櫒鍜屽叐鍊�(g猫) 0.6A 闄嶅鍨嬬┅(w臎n)澹撳櫒)銆佸叐鍊�(g猫)鐛�(d煤)绔嬬殑 1.2A 闄嶅鍨嬬┅(w臎n)澹撳櫒銆佹垨鍏╁��(g猫)鍒嗗垾鐐� 1.8A 鍜� 0.6A 鐨勭崹(d煤)绔嬮檷澹撳瀷绌�(w臎n)澹撳櫒銆�

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銆�銆�LTC3569 鍏锋湁涓�鍊�(g猫) PGOOD (闆绘簮鑹ソ) 寮曡叧锛岀敤浜庡湪浠讳綍浣胯兘绌�(w臎n)澹撳櫒杓稿嚭闆诲涓婂崌鑷崇法绋嬪�肩殑 8% 浠ュ収(n猫i)鏅�(sh铆)鐧�(f膩)鍑烘寚绀轰俊铏�(h脿o)銆傚鏋滀娇鑳借几鍑洪浕澹撲腑浠讳綍涓�鍊�(g猫)浣庝簬绶ㄧ▼鍊�锛屽墖 PGOOD 寮曡叧灏囨媺鑷充綆闆诲钩銆傝嫢鎵�鏈夌┅(w臎n)澹撳櫒闂�(gu膩n)鏂�锛屽墖 PGOOD 寮曡叧鎷夎嚦浣庨浕骞充笖 LTC3569 灏囬��(j矛n)鍏ヤ竴绋綆鍔熺巼鍋滄(j墨)妯″紡 (瑭叉ā寮忕殑闆绘簮闆绘祦 <1渭A)銆�

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宸叉敹閷勮姊�161784鍊�(g猫)