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UCC28083 - 8-Pin Current Mode Push-Pull PWM Controllers

Description

The UCC38083/4/5/6 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.

Features

  • D Programmable Slope Compensation D Internal Soft-Start on the UCC38083/4 D Cycle-by-Cycle Current Limiting D Low Start-Up Current of 120 µA and 1.5 mA Typical Run Current D Single External Component Oscillator Programmable from 50 kHz to 1 MHz D High-Current Totem-Pole Dual Output Stage Drives Push-Pull Configuration with 1-A Sink and 0.5-A Source Capability D Current Sense Discharge Transistor to Improve Dynamic Response D Internally Trimmed Bandgap Reference D Undervoltage Lockout with Hyster.

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Full PDF Text Transcription

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UCC28083, UCC28084, UCC28085, UCC28086 UCC38083, UCC38084, UCC38085, UCC38086 SLUS488E − SEPTEMBER 2002 − REVISED JULY 2009 8ĆPIN CURRENT MODE PUSHĆPULL PWM CONTROLLERS WITH PROGRAMMABLE SLOPE COMPENSATION FEATURES D Programmable Slope Compensation D Internal Soft-Start on the UCC38083/4 D Cycle-by-Cycle Current Limiting D Low Start-Up Current of 120 µA and 1.5 mA Typical Run Current D Single External Component Oscillator Programmable from 50 kHz to 1 MHz D High-Current Totem-Pole Dual Output Stage Drives Push-Pull Configuration with 1-A Sink and 0.
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