DESCRIPTION
●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
