TPS54231 Series

3.5 to 28V Input, 2A, 570kHz Step-Down Converter with Eco-mode™

Catalog

3.5 to 28V Input, 2A, 570kHz Step-Down Converter with Eco-mode™

Part	Supplier Device Package	Voltage - Input (Min) [Min]	Package / Case	Package / Case [y]	Package / Case [x]	Output Type	Mounting Type	Voltage - Output (Max) [Max]	Operating Temperature [Max]	Operating Temperature [Min]	Output Configuration	Frequency - Switching	Voltage - Input (Max) [Max]	Current - Output	Function	Number of Outputs	Voltage - Output (Min/Fixed)	Topology	Utilized IC / Part	Supplied Contents	Voltage - Input [Max]	Voltage - Input [Min]	Board Type	Main Purpose	Regulator Topology	Outputs and Type	Outputs and Type	Voltage - Output
Texas Instruments TPS54231DR	8-SOIC	3.5 V	8-SOIC	3.9 mm	0.154 in	Adjustable	Surface Mount	25 V	150 °C	-40 °C	Positive	570 kHz	28 V	2 A	Step-Down	1	0.8 V	Buck
Texas Instruments TPS54231DRG4	8-SOIC	3.5 V	8-SOIC	3.9 mm	0.154 in	Adjustable	Surface Mount	25 V	150 °C	-40 °C	Positive	570 kHz	28 V	2 A	Step-Down	1	0.8 V	Buck
Texas Instruments TPS54231EVM-372												570 kHz		2 A					TPS54231	Board(s)	28 V	7 V	Fully Populated	DC/DC Step Down	Buck	Non-Isolated	1	3.3 V
Texas Instruments TPS54231D	8-SOIC	3.5 V	8-SOIC	3.9 mm	0.154 in	Adjustable	Surface Mount	25 V	150 °C	-40 °C	Positive	570 kHz	28 V	2 A	Step-Down	1	0.8 V	Buck

Catalog

3.5 to 28V Input, 2A, 570kHz Step-Down Converter with Eco-mode™

Key Features

• 3.5- to 28-V Input Voltage RangeAdjustable Output Voltage Down to 0.8 VIntegrated 80-mΩ High-Side MOSFETSupports up to 2 A Continuous OutputCurrentHigh Efficiency at Light Loads with aPulse Skipping Eco-mode™Fixed 570-kHz Switching FrequencyTypical 1-µA Shutdown QuiescentCurrentAdjustable Slow-Start Limits InrushCurrentsProgrammable UVLO ThresholdOvervoltage Transient ProtectionCycle-by-Cycle Current Limit, FrequencyFold Back and Thermal Shutdown ProtectionAvailable in Easy-to-Use SOIC8 PackageSupported by WEBENCH®Software Tool(www.TI.com/WEBENCH)APPLICATIONSConsumer Applications such as Set-Top Boxes,CPE Equipment, LCD Displays, Peripherals, andBattery ChargersIndustrial and Car Audio Power Supplies5-V, 12-V and 24-V Distributed Power SystemsWEBENCH Is a trademark of Texas Instruments.All other trademarks are the property of their respective owners3.5- to 28-V Input Voltage RangeAdjustable Output Voltage Down to 0.8 VIntegrated 80-mΩ High-Side MOSFETSupports up to 2 A Continuous OutputCurrentHigh Efficiency at Light Loads with aPulse Skipping Eco-mode™Fixed 570-kHz Switching FrequencyTypical 1-µA Shutdown QuiescentCurrentAdjustable Slow-Start Limits InrushCurrentsProgrammable UVLO ThresholdOvervoltage Transient ProtectionCycle-by-Cycle Current Limit, FrequencyFold Back and Thermal Shutdown ProtectionAvailable in Easy-to-Use SOIC8 PackageSupported by WEBENCH®Software Tool(www.TI.com/WEBENCH)APPLICATIONSConsumer Applications such as Set-Top Boxes,CPE Equipment, LCD Displays, Peripherals, andBattery ChargersIndustrial and Car Audio Power Supplies5-V, 12-V and 24-V Distributed Power SystemsWEBENCH Is a trademark of Texas Instruments.All other trademarks are the property of their respective owners

Description

The TPS54231 device is a 2-V, 2-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 fold back and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54231 device is available in an 8-pin SOIC package that has been internally optimized to improve thermal performance. The TPS54231 device is a 2-V, 2-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 fold back and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54231 device is available in an 8-pin SOIC package that has been internally optimized to improve thermal performance.