TPS5420DRG4

TEXAS INSTRUMENTS  TPS5420DRG4  芯片, 直流/直流转换器

DESCRIPON

The TPS5420 is a high-output-current PWM converter that integrates a low resistance high side N-channel MOSFET. Included on the substrate with the listed features is a high performance voltage error amplifier that provides tight voltage regulation accuracy under transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 5.5 V; an internally set slow-start circuit to limit inrush currents; and a voltage feed-forward circuit to improve the transient response.

FEATURES

• Wide Input Voltage Range: 5.5 V to 36 V

• Up to 2-A Continuous 3-A Peak Output Current

• High Efficiency up to 95% Enabled by 110-mΩ Integrated MOSFET Switch

• Wide Output Voltage Range: Adjustable Down to 1.22 V with 1.5% Initial Accuracy

• Internal Compensation Minimizes External Parts Count

• Fixed 500-kHz Switching Frequency for Small Filter Size

• Improved Line Regulation and Transient Response by Input Voltage Feed Forward

• System Protected by Over Current Limiting, Over Voltage Protection and Thermal Shutdown

• –40°C to 125°C Operating Junction Temperature Range

• Available in Small 8-Pin SOIC Package

APPLICATIONS

• Consumer: Set-top Box, DVD, LCD Displays

• Industrial and Car Audio Power Supplies

• Battery Chargers, High Power LED Supply

• 12-V/24-V Distributed Power Systems