DESCRIPTION
●As a member of the SWIFT™ family of DC/DC regulators, the TPS5450 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 are 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
●• Qualified for Automotive Applications
●• Wide Input Voltage Range: 5.5 V to 36 V
●• Up to 5-A Continuous (6-A Peak) Output Current
●• High Efficiency Greater than 90% 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
●• 18-µA Shutdown Supply Current
●• Improved Line Regulation and Transient Response by Input Voltage Feed Forward
●• System Protected by Overcurrent Limiting, Overvoltage Protection, and Thermal Shutdown
●• Available in Small Thermally Enhanced 8-Pin SOIC PowerPAD™ Package
●APPLICATIONS
●• High-Density Point-of-Load Regulators
●• LCD Displays, Plasma Displays
●• Battery Chargers
●• 12-V/24-V Distributed Power Systems
