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常備原裝現(xiàn)貨 RS2138 PCT普誠 電源開關(guān)芯片

常備原裝現(xiàn)貨 RS2138 PCT普誠 電源開關(guān)芯片
型號: RS2138
廠 商:
品牌/商標(biāo): PCT/普誠
產(chǎn)品類別: 集成電路/IC- AC/DC電源芯片
聯(lián)系人: 顏先生/William
電話: 0755-82170220,21001680
 

產(chǎn)品詳情

常備原裝現(xiàn)貨 RS2138 PCT普誠 電源開關(guān)芯片


DESCRIPTION

RS2138 is a high performance offline PWM Powerswitch for low power AC/DC charger and adaptorapplications. It operates in primary-side sensing andregulation. Consequently, opto-coupler and 431 couldbe eliminated. Proprietary Constant Voltage (CV) andConstant Current (CC) control is integrated as shown inthe figure 1.

In CC control, the current and output power setting canbe adjusted externally by the sense resistor RS at CSpin. In CV control, multi-mode operations are utilized toachieve high performance and high efficiency. Inaddition, good load regulation is achieved by thebuilt-in cable drop compensation. Device operates inPFM in CC mode as well at large load condition and itoperates in PWM with frequency reduction atlight/medium load. 

RS2138 offers power on soft start control andprotection coverage with auto-recovery featuresincluding Cycle-by-Cycle current limiting, VDD OVP,VDD clamp and UVLO. Excellent EMI performance isachieved with Frequency Jiggling.


APPLICATIONS

● Cell Phone Charger

● Digital Cameras Charger

● Small Power Adaptor

● Auxiliary Power for PC, TV etc

● Linear Regulator/RCC Replacement