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L4940D2M5-TR 鏄竴娆剧敱 STMicroelectronics锛堟剰娉曞崐灏�(d菐o)楂旓級鐢熺敘(ch菐n)鐨勪綆澹撳樊绶氭€х┅(w臎n)澹撳櫒锛圠ow Dropout Regulator锛岀啊绋� LDO锛夈€傝┎鍣ㄤ欢灏堢偤闇€瑕侀珮绮惧害銆佷綆鍔熻€楀拰灏忓皝瑁濈殑鎳�(y墨ng)鐢ㄨ€岃ō(sh猫)瑷�銆侺4940 绯诲垪鏀寔澶氱ó鍥哄畾杓稿嚭闆诲閬搁爡(xi脿ng)锛孡4940D2M5-TR 鐗瑰畾鐗堟湰鎻愪緵 2.5V 鐨勭┅(w臎n)瀹氳几鍑洪浕澹�銆�
銆€銆€瑭茶姱鐗囧叿鏈夊嚭鑹茬殑绶氳矾鍜岃矤(f霉)杓夎(di脿o)绡€(ji茅)鑳藉姏锛岃兘澶�?y脿n)妤﹂灒N闆诲瓙瑷�(sh猫)鍌欎腑鐨勬晱鎰熼浕璺彁渚涚┅(w臎n)瀹氱殑闆绘簮渚涙噳(y墨ng)銆傚叾鍏稿瀷鎳�(y墨ng)鐢ㄥ牬鏅寘鎷究鏀滃紡瑷�(sh猫)鍌�銆佹秷璨�(f猫i)椤為浕瀛愮敘(ch菐n)鍝佷互鍙婂伐妤�(y猫)鎺у埗绛夊皪闆绘簮绌�(w臎n)瀹氭€ц姹傝純楂樼殑闋�(l菒ng)鍩�銆�

鍙冩暩(sh霉)

椤炲瀷锛歀DO
銆€銆€杓稿嚭闆诲锛�2.5V
銆€銆€杓稿叆闆诲鑼冨湇锛�3V 鑷� 12V
銆€銆€鏈€澶ц几鍑洪浕娴侊細150mA
銆€銆€闈滄厠(t脿i)闆绘祦锛�6mA
銆€銆€ dropout 闆诲锛�1.3V锛堟渶澶у€�锛岀暥(d膩ng) Iout = 150mA 鏅傦級
銆€銆€灏佽褰㈠紡锛歍O-220
銆€銆€宸ヤ綔婧害鑼冨湇锛�-40掳C 鑷� +125掳C
銆€銆€绱嬫尝鎶戝埗姣旓細50dB锛堝吀鍨嬪€硷紝1kHz 涓嬶級

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L4940D2M5-TR 鍏锋湁浠ヤ笅椤憲鐗规€э細
銆€銆€1. 楂樼簿搴︾殑杓稿嚭闆诲浣垮緱瀹冮潪甯搁仼鍚堢偤寰檿鐞嗗櫒銆丏SP 鍜屽叾浠栫簿瀵嗘ā鎿浕璺緵闆�銆�
銆€銆€2. 鍏�(n猫i)缃亷娴佷繚璀�(h霉)鍜岄亷鐔遍棞(gu膩n)鏂峰姛鑳�锛屾彁楂樹簡绯荤当(t菕ng)鐨勫彲闈犳€у拰瀹夊叏鎬�銆�
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銆€銆€6. 妤典綆鐨� dropout 闆诲浣垮叾鍗充娇鍦ㄨ几鍏ラ浕澹撴帴杩戣几鍑洪浕澹撶殑鎯呮硜涓嬩篃鑳介珮鏁堝伐浣�銆�

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閫欐 LDO 涓昏鎳�(y墨ng)鐢ㄤ簬浠ヤ笅鍫存櫙锛�
銆€銆€1. 渚挎敎寮忛浕瀛愯ō(sh猫)鍌欏绉诲嫊闆昏┍銆丳DA 鍜屼究鏀滃紡濯掗珨鎾斁鍣�銆�
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