鏅傞枔锛�2025/5/30 11:00:37
闁辫畝锛�11
MD8749H/B鏄竴娆鹃珮鏁堢殑鍚屾闄嶅DC-DC杞夋彌鍣�锛屽叿鏈夐珮闆嗘垚搴﹀拰鑹ソ鐨勬�ц兘琛ㄧ従(xi脿n)銆傝┎鑺墖閲囩敤鍏堥�茬殑CMOS宸ヨ棟鍒堕��锛屽収(n猫i)缃姛鐜嘙OSFET锛屾敮鎸佸杓稿叆闆诲鑼冨湇锛屽苟鑳藉鎻愪緵绌�(w臎n)瀹氱殑杓稿嚭闆绘祦銆傚叾瑷▓绶婃箠锛屽鍦嶅厓浠跺皯锛岄潪甯搁仼鍚堜究鏀滃紡瑷倷鍜屽叾浠栧皪绌洪枔鏁忔劅鐨勬噳鐢ㄥ牬鏅�銆�
銆�銆�MD8749H/B鐨勬帶鍒舵柟寮忕偤鎭掑畾闋荤巼闆绘祦妯″紡PWM锛屽叿鍌欏揩閫熺灛鎱�(t脿i)闊挎噳鑳藉姏鍜岃純浣庣殑绱嬫尝闆诲鐗规�с�傚悓鏅�锛屽畠閭勯泦鎴愪簡澶氱ó淇濊鍔熻兘锛屽閬庢祦淇濊銆佺煭璺繚璀峰拰閬庢韩淇濊绛夛紝纰轰繚鍦ㄥ悇绋伐浣滄浠朵笅鐨勫彲闈犻亱琛�銆�
杓稿叆闆诲鑼冨湇锛�2.7V~5.5V
銆�銆�杓稿嚭闆诲鑼冨湇锛�0.8V~VIN
銆�銆�鏈�澶ц几鍑洪浕娴侊細3A
銆�銆�闁嬮棞闋荤巼锛�1.2MHz
銆�銆�闈滄厠(t脿i)闆绘祦锛�30uA
銆�銆�寰呮闆绘祦锛�1uA
銆�銆�鏁堢巼锛堝吀鍨嬪�硷級锛�93%
銆�銆�宸ヤ綔婧害鑼冨湇锛�-40鈩儈+85鈩�
銆�銆�灏佽褰㈠紡锛歐LCSP-16
1. 鍏�(n猫i)缃笂涓嬫⿱楂樻晥鍔熺巼MOSFET锛岀劇闇�澶栫疆椹呭嫊闆昏矾銆�
銆�銆�2. 鏀寔楂橀仈3A鐨勬寔绾�(x霉)杓稿嚭闆绘祦锛屾豢瓒冲ぇ鍔熺巼鎳夌敤闇�姹�銆�
銆�銆�3. 1.2MHz楂橀牷闁嬮棞闋荤巼鍏佽ū浣跨敤灏忓瀷闆绘劅鍜岄浕瀹癸紝娓涘皯PCB闈㈢⿳銆�
銆�銆�4. 鎭掑畾闋荤巼闆绘祦妯″紡PWM鎺у埗锛岀⒑淇濈┅(w臎n)瀹氭�у拰蹇�熷嫊鎱�(t脿i)闊挎噳銆�
銆�銆�5. 鍏峰倷鍙法绋嬭粺鍟熷嫊鍔熻兘锛岄伩鍏嶄笂闆绘檪鐨勯浕娴佹矕鎿�銆�
銆�銆�6. 闆嗘垚鍏ㄩ潰鐨勪繚璀锋鍒讹紝鍖呮嫭閬庢祦淇濊銆佺煭璺繚璀峰拰閬庢韩闂滄柗鍔熻兘銆�
銆�銆�7. 寰呮妯″紡涓嬪姛鑰楁サ浣庯紝寤堕暦闆绘睜渚涢浕瑷倷鐨勫伐浣滄檪闁�銆�
MD8749H/B閬╃敤浜庨渶瑕侀珮鏁堥浕婧愮鐞嗙殑鍚勭ó鍫存櫙锛屼緥濡傛櫤鑳芥墜姗�銆佸钩鏉块浕鑵︺�佸彲绌挎埓瑷倷銆佽棈鐗欒�虫銆佺墿鑱�(li谩n)缍�(w菐ng)绲傜浠ュ強鍏朵粬渚挎敎寮忛浕瀛愮敘(ch菐n)鍝�銆�
銆�銆�姝ゅ锛岀敱浜庡叾楂樻晥鐜囧拰灏忓昂瀵哥壒榛�锛屼篃闈炲父閬╁悎鐢ㄤ簬绌洪枔鍙楅檺涓旇姹備綆鍔熻�楃殑绯荤当(t菕ng)涓�锛屾瘮濡傛櫤鑳藉灞呮帶鍒跺櫒鎴栨墜鎸佹脯閲忓剙鍣�銆�
APR349, MP2493, RT8097
