TPS5450MDDAREP Datasheet PDF - TI

●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