Description
The SC4810B/E is a 16 pin BICMOS primary side PWM controller for use in Isolated DC-DC and off-line switching power supplies. It is a highly integrated solution, requiring few external components. It features a high frequency of operation, accurately programmable maximum duty cycle, current mode control, line voltage monitoring, supply UVLO, low start-up current, and programmable soft start with user accessible reference. It operates in a fixed frequency, highly desirable for Telecom applications.
Features
â Operation to 1MHz
â Accurate programmable maximum duty cycle
â Line voltage monitoring
â External frequency synchronization
â Bi-phase mode of operation for low ripple
â Independent programmable delays
â Hiccup mode current limit
â Under 250µA start-up current
â Programmable maximum volt-second clamp
â Accessible reference voltage
â VDD undervoltage lockout
â -40°C to 105°C operating temperature
â 16 lead TSSOP or MLPQ lead free packages. Both fully WEEE and RoHS compliant
Applications
â Telecom equipment and power supplies
â Networking power supplies
â Power over LAN applications
â Industrial power supplies
â Isolated power supplies
â VoIP phones
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