UCC28083D Datasheet

Current Mode PWM Controllers


The UCC28083D /4/5/6 is a family of BiCMOS pulse width modulation (PWM) controllers for dc-to-dc or off-line fixed-frequency current-mode switching power supplies. The dual output stages are configured for the push-pull topology. Both outputs switch at half the oscillator frequency using a toggle flip-flop. The dead time between the two outputs is typically 110 ns, limiting each output’s duty cycle to less than 50%. UCC28083D Features • Programmable Slope Compensation• Internal Soft-Start on the UCC38083/4• Cycle-by-Cycle Current Limiting• Low Start-Up Current of 120 μA and 1.5 mA Typical Run Current• Single External Component Oscillator Programmable from 50 kHz to 1 MHz• High-Current Totem-Pole Dual Output Stage Drives Push-Pull Configuration with 1-A Sink and 0.5-A Source Capability• Current Sense Discharge Transistor to Improve Dynamic Response• Internally Trimmed Bandgap Reference• Undervoltage Lockout with Hysteresis UCC28083D Applications • High-Efficiency Switch-Mode Power Supplies• Telecom dc-to-dc Converters• Point-of-Load or Point-of-Use Power Modules• Low-Cost Push-Pull and Half-Bridge Applications


[{"Name":"Switching Frequency","Value":"50 kHz to 1000 kHz "},{"Name":"Rise Time ","Value":"25 ns "},{"Name":"Fall Time","Value":"25 ns "},{"Name":"Number of Outputs ","Value":"2"},{"Name":"Maximum Operating Temperature ","Value":"+ 85 C "},{"Name":"Mounting Style ","Value":"SMD/SMT "},{"Name":"Package / Case","Value":"SOIC-8 "}]

Manufacturer information

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