缍韩闆诲瓙甯傚牬缍�(w菐ng)-鍗佸叚骞村皥娉ㄦ墦閫犻浕瀛愬厓鍣ㄤ欢閲囪臣缍�(w菐ng)

LT3954 鏅傞枔锛�2020/11/4 16:41:00 闁辫畝锛�2393

LT3954 DC/DC 杞�(zhu菐n)鎻涘櫒鏄嚌灏嶉﹨(q奴)鍕曞ぇ闆绘祦 LED鑰岀爺鐧�(f膩)鐨勪竴娆炬柊鍣ㄤ欢锛岃┎鐢�(ch菐n)鍝佸叿鏈変竴鍊嬮瀹氬湪 40V/5A 鐨勫収(n猫i)閮ㄤ綆绔� N 婧濋亾鍔熺巼 MOSFET,灏堢偤鍏呯暥(d膩ng)涓€鍊嬫亽瀹氶浕娴佹簮鍜屾亽瀹氶浕澹撹(di脿o)绡€(ji茅)鍣ㄨ€岃ō(sh猫)瑷�銆�

涓昏鐗归粸

鍙偤 LED 鎻愪緵 3000:1 True Color PWMTM 瑾�(di脿o)鍏�

瀵� VIN 鑼冨湇锛�4.5V 鑷� 40V

杌岃嚦杌岄浕娴佹娓寖鍦嶏細0V 鑷� 40V

鍏�(n猫i)閮� 40V/5A 闁嬮棞(gu膩n)

鍙法绋� PWM 瑾�(di脿o)鍏変俊铏熺櫦(f膩)鐢熷櫒

鎭掑畾闆绘祦锛埪�3%锛� 鍜屾亽瀹氶浕澹� 锛埪�2%锛� 瑾�(di脿o)绡€(ji茅)

婧�(zh菙n)纰虹殑妯℃摤瑾�(di脿o)鍏�

鍙互閲囩敤鍗囧銆丼EPIC銆丆UK銆侀檷澹撴ā寮�銆侀檷澹�-鍗囧妯″紡銆佹垨鍙嶆縺寮忛厤缃締椹�(q奴)鍕� LED

杓稿嚭鐭矾淇濊(h霉)鍨嬪崌澹�

闁嬭矾 LED 淇濊(h霉)鍜屽牨鍛�

鍙(di脿o)闁嬮棞(gu膩n)闋荤巼锛�100kHz 鑷� 1MHz

鍏烽伈婊殑鍙法绋� VIN 娆犲闁夐帠锛圲VLO锛�

鐢ㄤ簬闆绘睜鍏呴浕鍣ㄧ殑 C/10 鎸囩ず

浣庡仠姗�(j墨)闆绘祦锛�<1渭A ?

鑰愮啽鎬ц兘澧炲挤(qi谩ng)鍨� 5mm x 6mm QFN 灏佽

40V 鎭掓祦 / 鎭掑瑾�(di脿o)绡€(ji茅)鍣�

鍏稿瀷鎳�(y墨ng)鐢�

LT3954閲囩敤楂樼闆绘祦妾㈡脯锛屾敮鎸佸崌澹撴ā寮�銆侀檷澹撴ā寮�銆侀檷澹�-鍗囧妯″紡鎴� SEPIC 鎷�?f霉)?銆傚浐瀹氶牷鐜�銆侀浕娴佹ā寮忔灦妲�(g貌u)鍦ㄤ竴鍊嬪緢瀵殑闆绘簮鍜岃几鍑洪浕澹撹寖鍦嶅収(n猫i)瀵︾従(xi脿n)浜嗙┅(w臎n)瀹氱殑鎿嶄綔銆傜暥(d膩ng)鐢变竴鍊嬪閮ㄤ俊铏熼﹨(q奴)鍕曟檪锛孭WM 杓稿叆鍙彁渚涢珮閬�(d谩) 3000:1 鐨� LED 瑾�(di脿o)鍏夋瘮銆侰TRL 杓稿叆鍓囨彁渚涗簡椤嶅鐨勬ā鎿(di脿o)鍏夎兘鍔�銆傝几鍑虹煭璺繚璀�(h霉)鍜岄枊璺� LED 淇濊(h霉)鍔熻兘澧炲挤(qi谩ng)浜嗙郴绲�(t菕ng)鍙潬鎬с€�

LT3954 閲囩敤 5mm x 6mm QFN 灏佽锛屽彲鎻愪緵闈炲父绶婃箠鐨勫ぇ鍔熺巼 LED 椹�(q奴)鍕曞櫒瑙ｆ焙鏂规銆備竴鍊嬮牷鐜囪(di脿o)绡€(ji茅)寮曡叧鍏佽ū鐢ㄦ埗鍦� 100kHz 鑷� 1MHz 鐨勮寖鍦嶅収(n猫i)瑷�(sh猫)缃牷鐜�锛屼互鍎�(y艒u)鍖栨晥鐜�銆佹€ц兘鎴栧閮ㄧ祫浠跺昂瀵镐笖闄嶄綆鎴愭湰銆�

LT3954鍏�(n猫i)閮� PWM 鐧�(f膩)鐢熷櫒鍙厤缃偤浠ユ亽瀹氶牷鐜囪嚜鎸暕锛屽苟鍏锋湁 4% 鑷� 96% 鐨勫彲绶ㄧ▼鍗犵┖姣�銆備娇鐢ㄤ竴鍊嬪収(n猫i)閮� 5A, 40V N 婧濋亾 MOSFET,鑳藉閲囩敤椤嶅畾 12V 杓稿叆椹�(q奴)鍕曢珮閬�(d谩) 8 鍊� 650mA 鐧藉厜 LED,寰炶€岃几閫佽秴閬� 20W 鐨勫姛鐜囥€侺T3954 鐨� 4.5V 鑷� 40V 杓稿叆闆诲鑼冨湇閬╁悎鍖呮嫭姹借粖銆佸伐妤�(y猫)鍜屽缓绛戠収鏄庣瓑澶氱ó鎳�(y墨ng)鐢�銆�