KA3842B各脚电压是多少才正常。。。请高手赐教
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1\u811aCOMP-OUT\uff1a3.5V\uff1b2\u811a FB(-)IN\uff1a2.5V\uff1b3\u811a LSNS-IN\uff1a0.5mV\uff1b4\u811a RT/CT\uff1a2.4V\uff1b5\u811a GND\uff1a0V\uff1b6\u811a V-OUT\uff1a1.2V\uff1b7\u811a Vcc-IN\uff1a14V\uff1b8\u811a VREF-OUT\uff1a5V\u3002
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UC3842B\u82af\u7247\u5404\u5f15\u811a\u7684\u5b9a\u4e49:
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2\u811a\uff1a\u662f\u7535\u538b\u7248\u9988\u8f93\u5165\u7aef,\u6b64\u811a\u7535\u538b\u4e0e\u8bef\u5dee\u653e\u5927\u5668\u540c\u76f8\u7aef\u76842.5V\u57fa\u51c6\u7535\u538b\u8fdb\u884c\u6bd4\u8f83,\u4ea7\u751f\u8bef\u5dee\u7535\u538b,\u4ece\u800c\u63a7\u5236\u8109\u51b2\u5bbd\u5ea6\uff1b
3\u811a\uff1a\u7535\u6d41\u53d6\u6837\u8f93\u5165\u7aef\uff0c\u5f53\u68c0\u6d4b\u7535\u538b\u8d85\u8fc71V\u65f6\u7f29\u5c0f\u8109\u51b2\u5bbd\u5ea6 \u4f7f\u7535\u6e90\u5904\u4e8e\u95f4\u6b47\u5de5\u4f5c\u72b6\u6001\uff1b
4\u811a\uff1a\u5b9a\u65f6\u7aef\uff0c\u5185\u90e8\u632f\u8361\u5668\u7684\u5de5\u4f5c\u9891\u7387\u7531\u5916\u63a5\u7684\u963b\u5bb9\u65f6\u95f4\u5e38\u6570\u51b3\u5b9a\uff0cf=1.72/(RTxCT)\uff1b
6\u811a\uff1a\u63a8\u633d\u8f93\u51fa\u7aef\uff0c\u5185\u90e8\u4e3a\u56fe\u817e\u67f1\u5f0f\uff0c\u5347\u3001\u4e0b\u964d\u65f6\u95f4\u4ec5\u4e3a50ns \u9a71\u52a8\u80fd\u529b\u4e3a+1A\uff1b
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绛旓細KA3842B / KA3843B / KA3844B / KA3845B鏄紑鍏崇數婧愭帶鍒跺櫒銆傛槸楂樻ц兘鍥哄畾棰戠巼鐢垫祦妯″紡PWM鎺у埗鍣ㄣ傛渶浼樺寲鐨勭绾緿C-DC鍙樻崲鍣ㄣ傞泦鎴愮數璺腑锛屾彁渚涗竴涓崟姝ヨ剦鍐叉帶鍒剁數璺紝蹇熻嚜鍔ㄨˉ鍋跨數璺紝楂樺鐩婅宸斁澶у櫒锛岀數娴佹娴嬫瘮杈冨櫒鍜屼竴涓珮椹卞姩鍔熺巼MOSFET銆傜數婧愪腑浣跨敤KA3843B鏄氳繃鍙樺帇鍣ㄥ拰鏁存祦鍣紝鎶婁氦娴佺數鍙樻垚...
绛旓細涓鏍枫KA3842 鏄紑鍏崇數婧愮敤鐢垫祦鎺у埗鏂瑰紡鐨勮剦瀹借皟鍒堕泦鎴愮數璺傚瀷鍙烽兘涓鏍凤紝搴忓彿涓嶄竴鏍风舰浜
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绛旓細4鑴氾紝鍩哄噯闇囪崱棰戠巼銆5鑴氾紝鍦般6鑴氾紝椹卞姩杈撳嚭銆7鑴氾紝鐢垫簮鑴氾紝姝ｅ父宸ヤ綔12-25V涔嬮棿銆傚惎鍔鐢靛帇8.5V銆傚叧鏂數鍘7.6V 8鑴氾紝鍐呴儴鍙傝冪數婧愶紝+5V銆傞氳繃姣旇緝锛KA3845锛孶C3845鍚姩鐢靛帇涓鏍凤紝寮曡剼鍙傛暟涓鏍枫傚叾瀹烇紝TL3845涓庝笂杩癐C寮曡剼涓鍔熻兘涓鏍凤紝鍙傛暟涓鏍凤紝鍙互浜掓崲銆3845鐨勫惎鍔ㄧ數鍘嬪拰鍏虫柇鐢靛帇姣3842浣4V鍜2.4V...
绛旓細鍙互鐢ㄥ惂,浣嗕笉鑳界‘瀹氫綘鑳界敤澶氶暱鏃堕棿,鍥犱负瀹冧滑鏈変簺灏忓弬鏁拌繕鏄笉涓鏍风殑,杩樻槸寤鸿浣犲埌甯傚満涔颁竴涓KA3842.
绛旓細鍏堟煡5,7鑴氥傛甯哥殑璇濆簲璇ユ槸17 V.杩欎釜涓槸渚涚數鐢靛帇锛屼篃鏄3842鏈瀹规槗鍑洪棶棰樼殑鍦版柟銆
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绛旓細KA3842B / KA3843B / KA3844B / KA3845B鏄紑鍏崇數婧愭帶鍒跺櫒銆傛槸楂樻ц兘鍥哄畾棰戠巼鐢垫祦妯″紡PWM鎺у埗鍣ㄣ傛渶浼樺寲鐨勭绾緿C-DC鍙樻崲鍣ㄣ傞泦鎴愮數璺腑锛屾彁渚涗竴涓崟姝ヨ剦鍐叉帶鍒剁數璺紝蹇熻嚜鍔ㄨˉ鍋跨數璺紝楂樺鐩婅宸斁澶у櫒锛岀數娴佹娴嬫瘮杈冨櫒鍜屼竴涓珮椹卞姩鍔熺巼MOSFET銆傜數婧愪腑浣跨敤KA3843B鏄氳繃鍙樺帇鍣ㄥ拰鏁存祦鍣紝鎶婁氦娴佺數鍙樻垚...
绛旓細KA3842B / KA3843B / KA3844B / KA3845B 寮鍏崇數婧愭帶鍒跺櫒 鏄珮鎬ц兘鍥哄畾棰戠巼鐢垫祦妯″紡PWM鎺у埗鍣ㄣ傛渶浼樺寲鐨勭绾緿C-DC鍙樻崲鍣ㄣ傞泦鎴愮數璺腑锛屾彁渚涗竴涓崟姝ヨ剦鍐叉帶鍒剁數璺紝蹇熻嚜鍔ㄨˉ鍋跨數璺紝楂樺鐩婅宸斁澶у櫒锛岀數娴佹娴嬫瘮杈冨櫒鍜屼竴涓珮椹卞姩鍔熺巼MOSFET銆傚紑鍏崇數婧愬叿鏈夊伐棰戝彉鍘嬪櫒鎵涓嶅叿澶囩殑浼樼偣锛屾柊鍨嬨侀珮鏁堛佽妭鑳界殑...
