TPS54331-Q1 Series

Automotive 3.5V to 28V, 570kHz Fixed Frequency 3A Buck Converter with Eco-Mode™

Catalog

Automotive 3.5V to 28V, 570kHz Fixed Frequency 3A Buck Converter with Eco-Mode™

Part	Output Configuration	Package / Case	Package / Case [y]	Package / Case [x]	Voltage - Output (Max) [Max]	Mounting Type	Voltage - Input (Min) [Min]	Topology	Supplier Device Package	Function	Frequency - Switching	Voltage - Input (Max) [Max]	Current - Output	Operating Temperature [Max]	Operating Temperature [Min]	Output Type	Number of Outputs	Voltage - Output (Min/Fixed)	Grade	Qualification	Voltage - Input [Max]	Voltage - Input [Min]	Regulator Topology	Utilized IC / Part	Board Type	Main Purpose	Voltage - Output	Outputs and Type	Outputs and Type	Supplied Contents
Texas Instruments TPS54331DG4	Positive	8-SOIC	3.9 mm	0.154 in	25 V	Surface Mount	3.5 V	Buck	8-SOIC	Step-Down	570 kHz	28 V	3 A	150 °C	-40 °C	Adjustable	1	0.8 V
Texas Instruments TPS54331DDA	Positive	8-PowerSOIC	3.9 mm	0.154 in	25 V	Surface Mount	3.5 V	Buck	8-SO PowerPad	Step-Down	570 kHz	28 V	3 A	150 °C	-40 °C	Adjustable	1	0.8 V
Texas Instruments TPS54331QDRQ1	Positive	8-SOIC	3.9 mm	0.154 in	25 V	Surface Mount	3.5 V	Buck	8-SOIC	Step-Down	570 kHz	28 V	3 A	125 °C	-40 °C	Adjustable	1	0.8 V	Automotive	AEC-Q100
Texas Instruments TPS54331D	Positive	8-SOIC	3.9 mm	0.154 in	25 V	Surface Mount	3.5 V	Buck	8-SOIC	Step-Down	570 kHz	28 V	3 A	150 °C	-40 °C	Adjustable	1	0.8 V
Texas Instruments TPS54331DR	Positive	8-SOIC	3.9 mm	0.154 in	25 V	Surface Mount	3.5 V	Buck	8-SOIC	Step-Down	570 kHz	28 V	3 A	150 °C	-40 °C	Adjustable	1	0.8 V
Texas Instruments TPS54331EVM-232											570 kHz		3 A								28 V	7 V	Buck	TPS54331	Fully Populated	DC/DC Step Down	3.3 V	Non-Isolated	1	Board(s)

Catalog

Automotive 3.5V to 28V, 570kHz Fixed Frequency 3A Buck Converter with Eco-Mode™

Key Features

• Qualified for Automotive Applications3.5V to 28V Input Voltage RangeAdjustable Output Voltage Down to 0.8VIntegrated 80 mΩ High Side MOSFET Supports up to 3A Continuous Output CurrentHigh Efficiency at Light Loads with Pulse Skipping Eco-mode™ ControlFixed 570kHz Switching FrequencyTypical 1µA Shutdown Quiescent CurrentAdjustable Slow Start Limits Inrush CurrentsProgrammable UVLO ThresholdOvervoltage Transient ProtectionCycle-by-Cycle Current Limit, Frequency Fold Back and Thermal Shutdown ProtectionAvailable in Easy-to-Use SOIC8 PackageSupported by SwitcherPro™ Software Tool (http://focus.ti.com/docs/toolsw/folders/print/switcherpro.html)strong>For SWIFT™ Documentation, See the TI Website atwww.ti.com/swiftAPPLICATIONSConsumer Applications such as Set-Top Boxes, CPE Equipment, LCD Displays,Peripherals, and Battery ChargersIndustrial and Car Audio Power Supplies5-V, 12-V and 24-V Distributed Power SystemsSWIFT, Eco-mode, SwitcherPro, PowerPAD are trademarks of Texas Instruments.Qualified for Automotive Applications3.5V to 28V Input Voltage RangeAdjustable Output Voltage Down to 0.8VIntegrated 80 mΩ High Side MOSFET Supports up to 3A Continuous Output CurrentHigh Efficiency at Light Loads with Pulse Skipping Eco-mode™ ControlFixed 570kHz Switching FrequencyTypical 1µA Shutdown Quiescent CurrentAdjustable Slow Start Limits Inrush CurrentsProgrammable UVLO ThresholdOvervoltage Transient ProtectionCycle-by-Cycle Current Limit, Frequency Fold Back and Thermal Shutdown ProtectionAvailable in Easy-to-Use SOIC8 PackageSupported by SwitcherPro™ Software Tool (http://focus.ti.com/docs/toolsw/folders/print/switcherpro.html)strong>For SWIFT™ Documentation, See the TI Website atwww.ti.com/swiftAPPLICATIONSConsumer Applications such as Set-Top Boxes, CPE Equipment, LCD Displays,Peripherals, and Battery ChargersIndustrial and Car Audio Power Supplies5-V, 12-V and 24-V Distributed Power SystemsSWIFT, Eco-mode, SwitcherPro, PowerPAD are trademarks of Texas Instruments.

Description

The TPS54331 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 under-voltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions. A cycle by cycle current limit scheme, frequency fold back and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54331 is available in an 8-pin SOIC package that has been internally optimized to improve thermal performance. The TPS54331 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 under-voltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions. A cycle by cycle current limit scheme, frequency fold back and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54331 is available in an 8-pin SOIC package that has been internally optimized to improve thermal performance.