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RT9721CGB 鏄竴娆剧敱 RICHTEK锛堢珛閿滅鎶�锛夎ō(sh猫)瑷堢殑鍚屾鏁存祦闄嶅鍨� DC-DC 杞�(zhu菐n)鎻涘櫒銆傝┎鑺墖鍏锋湁楂樻晥鐜�銆佸皬灏哄鍜屾槗鐢ㄦ�х瓑鐗归粸锛岄仼鐢ㄤ簬渚挎敎寮忚ō(sh猫)鍌欏拰鍏朵粬闇�瑕侀珮鏁堥浕婧愮鐞嗙殑鎳�(y墨ng)鐢ㄥ牬鏅�銆�
銆�銆�RT9721CGB 鍏�(n猫i)缃簡楂樻�ц兘 PWM 鎺у埗鍣ㄥ拰鍔熺巼 MOSFET锛岃兘澶犳彁渚涚┅(w臎n)瀹氱殑杓稿嚭闆诲锛屽苟鏀寔瀵几鍏ラ浕澹撹寖鍦�銆傚叾绶婃箠鐨勮ō(sh猫)瑷堝拰鍏ㄩ潰鐨勪繚璀峰姛鑳戒娇鍏舵垚鐐哄悇绋秷璨婚闆诲瓙鐢�(ch菐n)鍝佺殑鐞嗘兂閬告搰銆�
杓稿叆闆诲鑼冨湇锛�3V 鑷� 20V
銆�銆�杓稿嚭闆诲鑼冨湇锛�0.8V 鑷� (VIN - 0.5V)
銆�銆�闁嬮棞(gu膩n)闋荤巼锛�550kHz
銆�銆�鏈�澶ц几鍑洪浕娴侊細2A
銆�銆�寰呮闆绘祦锛�1渭A
銆�銆�宸ヤ綔婧害鑼冨湇锛�-40掳C 鑷� +85掳C
銆�銆�灏佽椤炲瀷锛歋OP-8
RT9721CGB 鐨勪富瑕佺壒鎬у寘鎷細
銆�銆�1. 鍚屾鏁存祦鏋舵(g貌u)锛屾彁楂樿綁(zhu菐n)鎻涙晥鐜�銆�
銆�銆�2. 鍏�(n猫i)缃姛鐜� MOSFET锛屾笡灏戝閮ㄥ厓浠舵暩(sh霉)閲忋��
銆�銆�3. 鏀寔鍙(di脿o)杓稿嚭闆诲锛岄�氶亷澶栭儴闆婚樆鍒嗗鍣ㄨō(sh猫)缃�銆�
銆�銆�4. 鍏锋湁閬庢祦淇濊銆佺煭璺繚璀峰拰閬庢韩淇濊鍔熻兘銆�
銆�銆�5. 鎻愪緵蹇�熺灛鎱�(t脿i)闊挎噳(y墨ng)锛岄仼鎳�(y墨ng)璨犺級璁婂寲銆�
銆�銆�6. 鍏�(n猫i)閮ㄨ鍎熺啊鍖栦簡闆昏矾瑷�(sh猫)瑷�銆�
銆�銆�7. 鏀寔浣胯兘寮曡叧锛屼究浜庢帶鍒惰姱鐗囬枊闂�(gu膩n)鐙�鎱�(t脿i)銆�
銆�銆�8. 灏忓昂瀵� SOP-8 灏佽锛岀瘈(ji茅)鐪� PCB 绌洪枔銆�
RT9721CGB 寤ｆ硾鎳�(y墨ng)鐢ㄤ簬浠ヤ笅闋�(l菒ng)鍩燂細
銆�銆�1. 娑堣不椤為浕瀛愮敘(ch菐n)鍝�锛屽鏅鸿兘鎵嬫銆佸钩鏉块浕鑵﹀拰渚挎敎寮忓獟楂旀挱鏀惧櫒銆�
銆�銆�2. 宸ユキ(y猫)瑷�(sh猫)鍌欎腑鐨勫祵鍏ュ紡闆绘簮妯″銆�
銆�銆�3. 鍙┛鎴磋ō(sh猫)鍌欏拰鍏朵粬浣庡姛鑰楃郴绲�(t菕ng)銆�
銆�銆�4. 闆绘睜渚涢浕瑷�(sh猫)鍌欙紝渚嬪鐒＄窔鍌虫劅鍣ㄥ拰鎵嬫寔鎺冩弿鍎�銆�
銆�銆�5. USB 鍏呴浕鍣ㄥ拰閬╅厤鍣�銆�
銆�銆�6. LED 椹�(q奴)鍕曢浕婧�銆�
銆�銆�7. 浠讳綍闇�瑕侀珮鏁堥檷澹撹綁(zhu菐n)鎻涚殑鎳�(y墨ng)鐢ㄥ牬鏅��
RT9721BGY, RT9721CGQ
IC鍨嬭櫉绱㈠紩锛� A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9
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