HomedatasheetUC3842BD1G

UC3842BD1G Datasheet

Current Mode PWM Controllers
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Description

The UC3842BD1G , UC3843B 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 a trimmed oscillator for precise duty cycle control, 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. UC3842BD1G Features • Trimmed Oscillator for Precise Frequency Control• Oscillator Frequency Guaranteed at 250 kHz• Current Mode Operation to 500 kHz• 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• Pb−Free Packages are Available
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":"SMD/SMT "},{"Name":"Package / Case","Value":"SOIC-8 "},{"Name":"Minimum Operating Temperature","Value":"0 C "},{"Name":"Packaging","Value":"Tube "}]

Manufacturer information

ROHM
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