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
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