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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

LTC3122
闁辫畝锛�4329鏅傞枔锛�2013-08-19 15:13:40

銆�銆�LTC3122 鏄竴娆惧悓姝ュ崌澹撳瀷 DC/DC 杞�(zhu菐n)鎻涘櫒锛屽叿鏈夌湡姝ｇ殑杓稿嚭鏂锋帴鍜屾氮娑岄浕娴侀檺鍒跺姛鑳�銆�2.5A 鐨勯浕娴侀檺鍊间互鍙婅ō(sh猫)缃珮閬�(d谩) 15V 杓稿嚭闆诲鐨勮兘鍔涗娇 LTC3122 闈炲父閬╁悎浜庣溇澶氳姹傝嫑鍒荤殑鎳�(y墨ng)鐢ㄣ�備竴鏃﹁捣鍕�锛屽櫒浠舵搷浣滃皣鍦ㄨ几鍏ヤ綆鑷� 500mV 鐨勬儏娉佷笅鎸佺簩(x霉)閫�(j矛n)琛�锛屽緸鑰屽欢闀蜂簡瑷卞鎳�(y墨ng)鐢ㄤ腑鐨勯亱(y霉n)琛屾檪闁撱��

    

鍦栫墖瑾槑锛氱穵婀�銆侀珮鏁堢巼 2.5A 鍚屾鍗囧鍨�绌�(w臎n)澹撳櫒鎻愪緵楂橀仈(d谩) 15V 杓稿嚭

涓昏鐗归粸(di菐n)

銆�銆�涓�杓稿嚭闆诲鑼冨湇锛�2.2V 鑷� 15V

銆�銆�浜孷IN 鑼冨湇锛�1.8V 鑷� 5.5V,鍟熷嫊鍚庣偤 500mV  涓夊湪 VIN = 5V 鍜� VOUT = 12V 鏅傦紝杓稿嚭闆绘祦鐐� 800mA

銆�銆�鍥涘仠姗�(j墨)鏅傝几鍑鸿垏杓稿叆鏂锋帴

銆�銆�浜斿悓姝ユ暣娴侊細鏁堢巼楂橀仈(d谩) 95%

銆�銆�鍏�12 寮曠窔 3mm x 4mm x 0.75mm 鑰愮啽澧炲挤(qi谩ng)鍨� DFN 鍜� MSOP

銆�銆�涓冮珮閬�(d谩) 3MHz 鐨勫彲瑾�(di脿o)闁嬮棞(gu膩n)闋荤巼鍙悓姝ヨ嚦澶栭儴鏅傞悩

銆�銆�鍏几鍑洪亷澹撲繚璀�(h霉)

銆�銆�涔濆彲閬哥獊鐧�(f膩)妯″紡宸ヤ綔锛�25?A IQ

銆�銆�鍗佽粺鍟熷嫊

銆�銆�鍗佷竴鍋滄(j墨)鏅� <1?A

銆�銆�鍗佷簩灏佽娴秾闆绘祦闄愬埗

      瑭插櫒浠剁殑鍏朵粬鐗归粸(di菐n)鍖呮嫭 <1渭A 鐨勫仠姗�(j墨)闆绘祦浠ュ強鐭矾銆佺啽閬庤級鍜岃几鍑洪亷澹撴儏娉佷笅鐨勭┅(w臎n)鍋ヤ繚璀�(h霉)鍔熻兘銆侺TC3122 閲囩敤鎵佸钩 12 寮曡叧 锛�3mm x 4mm x 0.75mm锛� DFN 灏佽鍜� 12 寮曡叧鑰愮啽鎬ц兘澧炲挤(qi谩ng)鍨� MSOP 灏佽銆�

涓昏鍔熻兘

銆�銆�LTC3122 鍏锋湁 RDS锛圤N锛� 鍍呯偤 121m惟 锛圢 婧濋亾锛� 鍜� 188m惟 锛圥 婧濋亾锛� 鐨勫収(n猫i)閮ㄥ悓姝ラ枊闂�(gu膩n)锛屼互鎻愪緵楂橀仈(d谩) 95% 鐨勬晥鐜�銆侺TC3122 鍙�氶亷涓�鍊嬪閮ㄥ紩鑵宠ō(sh猫)瀹氫互鍦ㄦ亽瀹� PWM 妯″紡閬�(y霉n)琛�銆傚叾浠栫壒榛�(di菐n)鍖呮嫭澶栭儴鍚屾銆佽几鍑洪亷澹撲繚璀�(h霉)鍜屽爡(ji膩n)鍥虹殑鐭矾淇濊(h霉)銆傝几鍑烘柗鎺ュ姛鑳藉厑瑷辫几鍑洪浕澹撳湪鍋滄(j墨)鏅傝瀹屽叏鏀鹃浕锛岃�屼笖鍦ㄥ暉鍕曟檪閭勬秷闄や簡澶х殑娴秾闆绘祦锛屽緸鑰岄檺搴﹀湴闄嶄綆浜嗚几鍏ラ浕婧愮殑澹撳姏銆傜暥(d膩ng)杓稿叆闆诲瓒呴亷杓稿嚭闆诲鏅�锛孡TC3122 渚濈劧瑾�(di脿o)绡�(ji茅)杓稿嚭闆诲锛屽緸鑰屼娇瑭插櫒浠惰兘鑸囦换浣曢浕姹犲寲瀛�(xu茅)绲勬垚鍏煎銆傚氨闇�瑕佷互鐩″彲鑳藉櫔鑱查亱(y霉n)琛岀殑鎳�(y墨ng)鐢ㄨ�岃█锛� LTC3122 鏄竴鍊嬮渶瑕侀珮閬�(d谩) 15V 杓稿嚭鐨勫崌澹撳瀷鎳�(y墨ng)鐢ㄤ箣鐞嗘兂瑙ｆ焙鏂规锛屽湪閫欓鎳�(y墨ng)鐢ㄤ腑锛岄珮鏁堢巼銆佸皬鐨勮В姹烘柟妗堝昂瀵稿拰楂樺彲闈犳�ф槸姹哄畾鎬у洜绱犮��
    

銆�銆�LTC3122 鍦ㄥ仠姗�(j墨)妯″紡涓叿鏈夎几鍑烘柗鎺ヨ兘鍔�锛屽緸鑰屽ぇ骞呭害鍦版笡灏戜簡杓稿叆闆绘簮娑堣�楀苟浣� VOUT 鑳藉畬鍏ㄦ斁闆�銆�100kHz 鑷� 3MHz 鐨勫彲瑾�(di脿o) PWM 闁嬮棞(gu膩n)闋荤巼鍎�(y艒u)鍖栦簡鎳�(y墨ng)鐢�锛屽彲瀵�(sh铆)鐝�(xi脿n)鐨勬晥鐜囨垨鏈�灏忕殑瑙ｆ焙鏂规鍗犳澘闈㈢⿳銆傚皪浜庨偅浜涘皪鍣伈鏁忔劅鐨勬噳(y墨ng)鐢�锛屼篃鍙娇鎸暕鍣ㄥ悓姝ヨ嚦涓�鍊嬪閮ㄦ檪閻�?锛熻泧x鐨勭獊鐧�(f膩)妯″紡鎿嶄綔灏囬潨鎱�(t脿i)闆绘祦娓涘皬鑷� 25渭A,寰炶�屽湪鏁村�嬭矤(f霉)杓夎寖鍦嶅収(n猫i)纰轰繚浜嗛珮鏁堢巼銆傚収(n猫i)閮ㄨ粺璧峰嫊鍔熻兘鍙檺鍒跺暉鍕曟湡闁撶殑娴秾闆绘祦銆�

缍韩闆诲瓙閫�锛岄浕瀛愮煡璀�锛屼竴鏌ョ櫨閫氾紒

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