Product Summary

The TPS5450DDARG4 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. The applications of the TPS5450DDARG4 include High Density Point-of-Load Regulators, LCD Displays, Plasma Displays, Battery Chargers, 12-V/24-V Distributed Power Systems.

Parametrics

TPS5450DDARG4 absolute maximum ratings: (1)VI Input voltage range VIN: –0.3 to 40 V; BOOT: –0.3 to 50 V; PH (steady-state): –0.6 to 40 V; (2)ENA: –0.3 to 7 V; (3)BOOT-PH: 10 V; (4)VSENSE: –0.3 to 3 V; (5)PH (transient < 10 ns): –1.2 V; (6)Ilkg Leakage current PH: 10 μA; (7)TJ Operating virtual junction temperature range: –40 to 150 ℃; (8)Tstg Storage temperature: –65 to 150 ℃.

Features

TPS5450DDARG4 features: (1)Wide Input Voltage Range: 5.5 V to 36 V; (2)Up to 5-A Continuous (6-A Peak) Output Current; (3)High Efficiency Greater than 90% Enabled by 110-mΩ Integrated MOSFET Switch; (4)Wide Output Voltage Range: Adjustable Down to 1.22 V with 1.5% Initial Accuracy; (5)Internal Compensation Minimizes External Parts Count; (6)Fixed 500 kHz Switching Frequency for Small Filter Size; (7)18 μA Shut Down Supply Current; (8)Improved Line Regulation and Transient Response by Input Voltage Feed Forward; (9)System Protected by Overcurrent Limiting, Overvoltage Protection and Thermal Shutdown.

Diagrams

TPS5450DDA diagram

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Quantity
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