HomedatasheetUC3845BD1G

UC3845BD1G Datasheet

Switching Controllers
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Description

The UC3844B, UC3845BD1G series are high performance fixed frequency current mode controllers. They are specifically designed for Off−Line and dc−dc converter applications offering the designer a cost−effective solution with minimal external components. These integrated circuits feature an oscillator, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET. UC3845BD1G Features • Trimmed Oscillator for Precise Frequency Control• Oscillator Frequency Guaranteed at 250 kHz• Current Mode Operation to 500 kHz Output Switching Frequency• Output Deadtime Adjustable from 50% to 70%• Automatic Feed Forward Compensation• Latching PWM for Cycle−By−Cycle Current Limiting• Internally Trimmed Reference with Undervoltage Lockout• High Current Totem Pole Output• Undervoltage Lockout with Hysteresis• Low Startup and Operating Current• These Devices are Pb−Free and are RoHS Compliant• NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable
Features

Parameters

[{"Name":"Switching Frequency ","Value":"500 kHz"},{"Name":"Output Voltage ","Value":"4.9 V to 5.1 V "},{"Name":"Output Current ","Value":"1000 mA "},{"Name":"Number of Outputs ","Value":"1"},{"Name":"Maximum Operating Temperature ","Value":"+ 70 C "},{"Name":"Mounting Style","Value":"SMD/SMT "},{"Name":"Package / Case ","Value":"SOIC-8 "}]

Manufacturer information

FAIRCHILD SEMICONDUCTOR

Fairchild has a rich history as a pioneer in the semiconductor industry and that pioneering spirit endures today. In an era where diversity can dilute focus and hamper innovation, we specialize in the development and manufacturing of a complete portfolio of low- to high-power solutions for the mobile, industrial, cloud, automotive, lighting, and computing industries. Fairchild is one of the most reliable partners in the industry, offering the shortest time from concept to silicon, expert FAEs for customer support, and a flexible, multi-source supply chain. Our vision is clear – anticipate the power efficiencies demanded by tomorrow’s electronic products and deliver an amazing design experience

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