UCC3808A-1 - Texas Instruments

UCC3808A-1 Low-Power Current-Mode Push-Pull PWM

The UCCx808A devices are a family of BiCMOS push-pull, high-speed, low-power, pulse-width modulators. The UCCx808A contains all of the control and drive circuitry required for off-line or DC-to-DC fixed frequency current-mode switching power supplies with minimal external parts count. The UCCx808A dual-output drive stages are arranged in a push-pull configu.

Features

•1 Dual-Output Drive Stages in Push-Pull Configuration
• Current-Sense Discharge Transistor to Improve Dynamic Response
• 130-μA Typical Starting Current
• 1-mA Typical Run Current
• Operation to 1 MHz
• Internal Soft Start
• On-Chip Error Amplifier With 2-MHz Gain Bandwidth Product
• On-Chip VDD Clamping
• Output Drive Stages Capable of 500-mA Peak- Source Current, 1-A Peak-Sink Current 2 Applications
• High-Efficiency Switch-Mode Power Supplies
• Telecom DC-to-DC Converters
• Point-of-Load Power Modules
• Low-Cost Push-Pull and Half-Bridge Applications 3 Description The UCCx808A devices are .