TPS54331DR Power Path Management IC Switching Voltage Regulators 3A 28V In Step Down SWIFT DC/DC Cnvrtr
microchip battery management
,power management integrated circuit
TPS54331DR Power Path Management IC Switching Voltage Regulators 3A 28V In Step Down SWIFT DC/DC Cnvrtr
1 Features
- 3.5 to 28-V Input Voltage Range
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Adjustable Output Voltage Down to 0.8 V
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Integrated 80-mΩ High-Side MOSFET Supports up to 3-A Continuous Output Current
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High Efficiency at Light Loads With a Pulse Skipping Eco-modeTM
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Fixed 570 kHz Switching Frequency
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Typical 1-μA Shutdown Quiescent Current
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Adjustable Slow-Start Limits Inrush Currents
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Programmable UVLO Threshold
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Overvoltage Transient Protection
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Cycle-by-Cycle Current Limit, Frequency Fold Back, and Thermal Shutdown Protection
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Available in Easy-to-Use SOIC8 Package or Thermally Enhanced SOIC8 PowerPADTM Package
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Create a Custom Design with WEBENCH Tools
2 Applications
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Consumer Applications such as Set-Top Boxes, CPE Equipment, LCD Displays, Peripherals, and Battery Chargers
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Industrial and Car-Audio Power Supplies
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5-V, 12-V, and 24-V Distributed Power Systems
3 Description
The TPS54331 device is a 28-V, 3-A non- synchronous buck converter that integrates a low RDS(on) high-side MOSFET. To increase efficiency at light loads, a pulse skipping Eco-mode feature is automatically activated. Furthermore, the 1-μA shutdown supply-current allows the device to be used in battery-powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input undervoltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions. A cycle-by-cycle current-limit scheme, frequency foldback and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54331 device is available in an 8-pin SOIC package and 8-pin SO PowerPAD package that have been internally optimized to improve thermal performance.