TPS54319 Series

2.95 V to 6 V input, 3 A, 2 MHz SWIFT™ synchronous step-down converter in a 3 mm x 3 mm QFN package

Catalog

2.95 V to 6 V input, 3 A, 2 MHz SWIFT™ synchronous step-down converter in a 3 mm x 3 mm QFN package

Part	Outputs and Type	Outputs and Type	Main Purpose	Board Type	Utilized IC / Part	Voltage - Input [Min]	Voltage - Input [Max]	Frequency - Switching [Max]	Frequency - Switching [Min]	Current - Output	Supplied Contents	Regulator Topology	Voltage - Output	Supplier Device Package	Output Type	Voltage - Input (Min) [Min]	Voltage - Input (Max) [Max]	Voltage - Output (Max) [Max]	Function	Voltage - Output (Min/Fixed)	Package / Case	Topology	Mounting Type	Number of Outputs	Operating Temperature [Max]	Operating Temperature [Min]	Output Configuration	Synchronous Rectifier
Texas Instruments TPS54319EVM-626	Non-Isolated	1	DC/DC Step Down	Fully Populated	TPS54319	3 V	6 V	2 MHz	200 kHz	3 A	Board(s)	Buck	1.8 V
Texas Instruments TPS54319RTER								2 MHz	300 kHz	3 A				16-WQFN (3x3)	Adjustable	2.95 V	6 V	4.5 V	Step-Down	0.827 V	16-WFQFN Exposed Pad	Buck	Surface Mount	1	150 °C	-40 °C	Positive

Catalog

2.95 V to 6 V input, 3 A, 2 MHz SWIFT™ synchronous step-down converter in a 3 mm x 3 mm QFN package

Key Features

• Two 45-m(typical) MOSFETs for High Efficiency at 3-A Loads300kHz to 2MHz Switching Frequency0.8 V ± 3.0% Voltage Reference Over Temperature (0°C to 85°C)Synchronizes to External ClockAdjustable Slow Start/SequencingUV and OV Power Good Output–40°C to 150°C Operating Junction Temperature RangeThermally Enhanced 3mm × 3mm 16-pin QFNPin Compatible to TPS54318APPLICATIONSLow-Voltage, High-Density Power SystemsPoint-of-Load Regulation for Consumer Applications such as Set Top Boxes,LCD Displays, CPE EquipmentSWIFT, SwitcherPro are trademarks of Texas Instruments.Two 45-m(typical) MOSFETs for High Efficiency at 3-A Loads300kHz to 2MHz Switching Frequency0.8 V ± 3.0% Voltage Reference Over Temperature (0°C to 85°C)Synchronizes to External ClockAdjustable Slow Start/SequencingUV and OV Power Good Output–40°C to 150°C Operating Junction Temperature RangeThermally Enhanced 3mm × 3mm 16-pin QFNPin Compatible to TPS54318APPLICATIONSLow-Voltage, High-Density Power SystemsPoint-of-Load Regulation for Consumer Applications such as Set Top Boxes,LCD Displays, CPE EquipmentSWIFT, SwitcherPro are trademarks of Texas Instruments.

Description

The TPS54319 device is a full featured 6 V, 3 A, synchronous step down current mode converter with two integrated MOSFETs. The TPS54319 enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by enabling up to 2 MHz switching frequency, and minimizing the IC footprint with a small 3mm × 3mm thermally enhanced QFN package. The TPS54319 provides accurate regulation for a variety of loads with an accurate ±3.0% Voltage Reference (VREF) over temperature. Efficiency is maximized through the integrated 45mMOSFETs and 360µA typical supply current. Using the enable pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode. Under voltage lockout is internally set at 2.6 V, but can be increased by programming the threshold with a resistor network on the enable pin. The output voltage startup ramp is controlled by the slow start pin. An open drain power good signal indicates the output is within 93% to 107% of its nominal voltage. Frequency fold back and thermal shutdown protects the device during an over-current condition. The TPS54319 is supported in the SwitcherPro™ Software Tool atwww.ti.com/switcherpro. For more SWIFT™ documentation, see the TI website atwww.ti.com/swift. The TPS54319 device is a full featured 6 V, 3 A, synchronous step down current mode converter with two integrated MOSFETs. The TPS54319 enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by enabling up to 2 MHz switching frequency, and minimizing the IC footprint with a small 3mm × 3mm thermally enhanced QFN package. The TPS54319 provides accurate regulation for a variety of loads with an accurate ±3.0% Voltage Reference (VREF) over temperature. Efficiency is maximized through the integrated 45mMOSFETs and 360µA typical supply current. Using the enable pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode. Under voltage lockout is internally set at 2.6 V, but can be increased by programming the threshold with a resistor network on the enable pin. The output voltage startup ramp is controlled by the slow start pin. An open drain power good signal indicates the output is within 93% to 107% of its nominal voltage. Frequency fold back and thermal shutdown protects the device during an over-current condition. The TPS54319 is supported in the SwitcherPro™ Software Tool atwww.ti.com/switcherpro. For more SWIFT™ documentation, see the TI website atwww.ti.com/swift.