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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 | 鍏嶈不娉ㄥ唺

鎮ㄦ墍鍦ㄧ殑浣嶇疆锛�闆诲瓙鍏冨櫒浠堕噰璩肩恫(w菐ng) > IC鐧剧 > L4947R

L4947R 鐧�(f膩)甯冩檪闁� 鏅傞枔锛�2025/6/11 16:09:52 鏌ョ湅 闁辫畝锛�4

L4947R 鏄竴娆鹃珮鎬ц兘銆佷綆鍔熻�楃殑闄嶅鍨嬬洿娴�-鐩存祦杞�(zhu菐n)鎻涜姱鐗�锛屽唬娉涙噳(y墨ng)鐢ㄤ簬鍚勭ó闇�瑕侀珮鏁堥浕澹撹綁(zhu菐n)鎻涚殑鍫存櫙銆傝┎鑺墖闆嗘垚浜嗗姛鐜囬枊闂�(gu膩n)绠″拰澶氱ó淇濊(h霉)鍔熻兘锛岃兘澶犲湪杓冨鐨勮几鍏ラ浕澹撹寖鍦嶅収(n猫i)鎻愪緵绌�(w臎n)瀹氱殑杓稿嚭闆诲銆傚叾楂樻晥鐜囧拰绶婃箠鐨勮ō(sh猫)瑷堜娇鍏堕潪甯搁仼鍚堜究鏀滃紡瑷�(sh猫)鍌欏拰灏嶇┖闁撹姹傝純楂樼殑鎳�(y墨ng)鐢ㄥ牬鍚�銆�
銆�銆�瑭茶姱鐗囬噰鐢ㄥ厛閫�(j矛n)鐨勬帶鍒剁畻娉曪紝鑳藉鏈夋晥闄嶄綆闁嬮棞(gu膩n)鎼嶈�楀苟鎻愰珮鏁撮珨鏁堢巼锛屽悓鏅傛敮鎸佽剤娌栭牷鐜囪(di脿o)鍒讹紙PFM锛夊拰鑴堟矕瀵害瑾�(di脿o)鍒讹紙PWM锛夊叐绋伐浣滄ā寮忥紝浠ラ仼鎳�(y墨ng)涓嶅悓鐨勮矤(f霉)杓夋浠�銆�

鍙冩暩(sh霉)

杓稿叆闆诲鑼冨湇锛�3V - 40V
銆�銆�杓稿嚭闆诲鑼冨湇锛�1.2V - 35V
銆�銆�鏈�澶ц几鍑洪浕娴侊細3A
銆�銆�闁嬮棞(gu膩n)闋荤巼锛�500kHz
銆�銆�寰呮闆绘祦锛氬吀鍨嬪�� 2uA
銆�銆�灏佽褰㈠紡锛歋OIC-8
銆�銆�宸ヤ綔婧害鑼冨湇锛�-40鈩� 鑷� +125鈩�
銆�銆�鏁堢巼锛氶珮閬�(d谩) 95%
銆�銆�鍟熷嫊闆诲锛氬吀鍨嬪�� 2.6V

鐗规��

L4947R 鍏峰倷浠ヤ笅椤憲鐗规�э細
銆�銆�1. 鍏�(n猫i)缃姛鐜囬枊闂�(gu膩n)绠�锛岀劇闇�澶栫疆鍔熺巼鍣ㄤ欢锛屾笡灏戜簡澶栧湇闆昏矾瑷�(sh猫)瑷堝京(f霉)闆滃害銆�
銆�銆�2. 鏀寔鎭掑畾灏�(d菐o)閫氭檪闁擄紙COT锛夋帶鍒舵ā寮�锛屾彁渚涘揩閫熺灛鎱�(t脿i)闊挎噳(y墨ng)鑳藉姏銆�
銆�銆�3. 闆嗘垚浜嗗閲嶄繚璀�(h霉)鍔熻兘锛屽寘鎷亷娴佷繚璀�(h霉)銆佺煭璺繚璀�(h霉)銆侀亷婧繚璀�(h霉)绛�锛岀⒑淇濈郴绲�(t菕ng)鍦ㄧ暟甯告儏娉佷笅鐨勫畨鍏ㄩ亱琛�銆�
銆�銆�4. 鎻愪緵鍙(di脿o)杌熷暉鍕曞姛鑳�锛屾笡灏戜笂闆绘檪鐨勬矕鎿婇浕娴�銆�
銆�銆�5. 鏀寔澶栭儴瑁滃劅锛屽彲鏍规摎(j霉)鍏烽珨鎳�(y墨ng)鐢ㄩ渶姹傚劒(y艒u)鍖栫挵(hu谩n)璺┅(w臎n)瀹氭��銆�
銆�銆�6. 宸ヤ綔闋荤巼鍥哄畾鐐� 500kHz锛屾湁鍔╀簬閬告搰杓冨皬灏哄鐨勫閮ㄥ厓浠�锛岀瘈(ji茅)鐪� PCB 绌洪枔銆�
銆�銆�7. 鎻愪緵绮剧⒑鐨勫弮鑰冮浕澹撴簮锛岃几鍑洪浕澹撶簿搴﹀彲閬�(d谩) 卤1%銆�

鎳�(y墨ng)鐢�

L4947R 鑺墖閬╃敤浜庝互涓嬮牁(l菒ng)鍩燂細
銆�銆�1. 娑堣不闆诲瓙鐢�(ch菐n)鍝佺殑闆绘簮绠＄悊锛屽鏅鸿兘鎵嬫鍜屽钩鏉块浕鑵﹀厖闆诲櫒銆�
銆�銆�2. 宸ユキ(y猫)瑷�(sh猫)鍌欎腑鐨勪綆澹撻浕婧愭ā濉婏紝渚嬪鍌虫劅鍣ㄤ緵闆诲柈鍏�銆�
銆�銆�3. 闆绘睜渚涢浕瑷�(sh猫)鍌欑殑闆诲杞�(zhu菐n)鎻�锛屽鎵嬫寔寮忓伐鍏峰拰鐒＄窔閫氫俊瑁濈疆銆�
銆�銆�4. LED 椹�(q奴)鍕曞櫒瑷�(sh猫)瑷�锛岀敤浜庨珮鏁堢収鏄庤В姹烘柟妗�銆�
銆�銆�5. 姹借粖闆诲瓙绯荤当(t菕ng)涓殑杓斿姪闆绘簮妯″锛屾豢瓒冲毚(y谩n)鑻涚挵(hu谩n)澧冧笅鐨勭┅(w臎n)瀹氭�ц兘瑕佹眰銆�

鏇夸唬鍨嬭櫉

L4947P, L4947N

l4947r鎺ㄨ枽渚涙噳(y墨ng)鍟� 鏇村>

  • 鐢�(ch菐n)鍝佸瀷铏�
  • 渚涙噳(y墨ng)鍟�
  • 鏁�(sh霉)閲�
  • 寤犲晢
  • 灏佽/鎵硅櫉
  • 瑭㈠児

l4947r璩囨枡 鏇村>

  • 鍨嬭櫉
  • 鎻忚堪
  • 鍝佺墝
  • 闁辫涓嬭級

l4947r鍙冩暩(sh霉)

  • 鍒堕�犲晢STMicroelectronics
  • 鐢�(ch菐n)鍝佺ó椤�浣庡闄� (LDO) 瑾�(di脿o)绡�(ji茅)鍣�
  • 鏈�澶ц几鍏ラ浕澹�26 V
  • 杓稿嚭闆诲5 V
  • 鍥炲嫊闆诲锛堟渶澶у�硷級0.55 V at 500 mA
  • 杓稿嚭闆绘祦500 mA
  • 璨�(f霉)杓夎(di脿o)绡�(ji茅)60 mV
  • 杓稿嚭绔暩(sh霉)閲�1
  • 杓稿嚭椤炲瀷Fixed
  • 鏈�澶у伐浣滄韩搴�+ 125 C
  • 瀹夎棰�(f膿ng)鏍�Through Hole
  • 灏佽 / 绠遍珨Pentawatt
  • 杓稿叆鍋忔祦锛堟渶澶у�硷級5 mA
  • Input Voltage MIN+ 6 V
  • 绶氳矾瑾�(di脿o)鏁寸巼10 mV
  • 鏈�灏忓伐浣滄韩搴�- 40 C
  • 灏佽Tube
  • 宸ュ粻鍖呰鏁�(sh霉)閲�50
  • 闆诲瑾�(di脿o)绡�(ji茅)婧�(zh菙n)纰哄害4 %