HomedatasheetUC3844BNG

UC3844BNG Datasheet

Current Mode PWM Controllers
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Description

The UC3844BNG , UC3845B 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. UC3844BNG Features • Pb−Free Packages are Available• 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
Features

Parameters

[{"Name":"Switching Frequency","Value":"500 kHz "},{"Name":"Rise Time","Value":"50 ns "},{"Name":"Fall Time","Value":"50 ns "},{"Name":"Operating Supply Voltage","Value":"30 V "},{"Name":"Number of Outputs","Value":"1"},{"Name":"Maximum Operating Temperature","Value":"+ 70 C "},{"Name":"Mounting Style","Value":"Through Hole "},{"Name":"Package / Case","Value":"PDIP-8 "},{"Name":"Minimum Operating Temperature","Value":"0 C "},{"Name":"Packaging","Value":"Tube "}]

Manufacturer information

FUXIN JIEKEDA ELECTRONIC CO.,LTD.
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