TPS54331 Series

3.5V to 28V Input, 3A, 570kHz Step-Down Converter with Eco-mode

Catalog(3 parts)

Part	Supplier Device Package	Voltage - Output (Max)▲▼	Current - Output▲▼	Output Configuration	Package / Case▲▼	Package / Case	Output Type	Voltage - Input (Min)▲▼	Mounting Type	Topology	Number of Outputs▲▼	Voltage - Output (Min/Fixed)▲▼	Operating Temperature▲▼	Operating Temperature▲▼	Voltage - Input (Max)▲▼	Frequency - Switching▲▼	Function	Package / Case▲▼	Package / Case▲▼	Qualification	Grade
Texas Instruments TPS54331DG4 Buck Switching Regulator IC Positive Adjustable 0.8V 1 Output 3A 8-SOIC (0.154", 3.90mm Width)	8-SOIC	25 V	3 A	Positive	0.003899999894201755 m	8-SOIC	Adjustable	3.5 V	Surface Mount	Buck	1 ul	0.800000011920929 V	150 °C	-40 °C	28 V	570000 Hz	Step-Down
Texas Instruments TPS54331DDA Buck Switching Regulator IC Positive Adjustable 0.8V 1 Output 3A 8-PowerSOIC (0.154", 3.90mm Width)	8-SO PowerPad	25 V	3 A	Positive		8-PowerSOIC	Adjustable	3.5 V	Surface Mount	Buck	1 ul	0.800000011920929 V	150 °C	-40 °C	28 V	570000 Hz	Step-Down	0.003899999894201755 m	0.003911599982529879 m
Texas Instruments TPS54331QDRQ1 Buck Switching Regulator IC Positive Adjustable 0.8V 1 Output 3A 8-SOIC (0.154", 3.90mm Width)	8-SOIC	25 V	3 A	Positive	0.003899999894201755 m	8-SOIC	Adjustable	3.5 V	Surface Mount	Buck	1 ul	0.800000011920929 V	125 °C	-40 °C	28 V	570000 Hz	Step-Down			AEC-Q100	Automotive

Key Features

• 3.5 to 28-V input voltage rangeAdjustable output voltage down to 0.8 VIntegrated 80-mΩ high-side MOSFET supports up to 3-A continuous output currentHigh efficiency at light loads with a pulse skipping Eco-modeFixed 570-kHz switching frequencyTypical 1-µA shutdown quiescent currentAdjustable slow-start limits inrush currentsProgrammable UVLO thresholdOvervoltage transient protectionCycle-by-cycle current limit, frequency foldback, and thermal shutdown protectionAvailable in easy-to-use SOIC8 package or thermally-enhanced SOIC8 PowerPAD™ integrated circuit packageCreate a custom design using the TPS54331 with theWEBENCH Power DesignerUseTPS62933for a 30 VIN converter with higher frequency, lower IQ and improved EMI3.5 to 28-V input voltage rangeAdjustable output voltage down to 0.8 VIntegrated 80-mΩ high-side MOSFET supports up to 3-A continuous output currentHigh efficiency at light loads with a pulse skipping Eco-modeFixed 570-kHz switching frequencyTypical 1-µA shutdown quiescent currentAdjustable slow-start limits inrush currentsProgrammable UVLO thresholdOvervoltage transient protectionCycle-by-cycle current limit, frequency foldback, and thermal shutdown protectionAvailable in easy-to-use SOIC8 package or thermally-enhanced SOIC8 PowerPAD™ integrated circuit packageCreate a custom design using the TPS54331 with theWEBENCH Power DesignerUseTPS62933for a 30 VIN converter with higher frequency, lower IQ and improved EMI

Description

The TPS54331 device is a 28-V, 3-A non-synchronous buck converter that integrates a low R DS(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 start-up 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 integrated circuit package that have been internally optimized to improve thermal performance. The TPS54331 device is a 28-V, 3-A non-synchronous buck converter that integrates a low R DS(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 start-up 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 integrated circuit package that have been internally optimized to improve thermal performance.