TPS54218 Series

2.95V to 6V Input, 2A Synchronous Step-Down SWIFT™ Converter

Catalog

2.95V to 6V Input, 2A Synchronous Step-Down SWIFT™ Converter

Part	Output Configuration	Current - Output	Voltage - Input (Min) [Min]	Package / Case	Frequency - Switching [Max]	Frequency - Switching [Min]	Voltage - Output (Max) [Max]	Voltage - Output (Min/Fixed)	Voltage - Input (Max) [Max]	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Output Type	Number of Outputs	Function	Topology	Supplier Device Package	Utilized IC / Part	Board Type	Regulator Topology	Supplied Contents	Voltage - Output	Outputs and Type	Outputs and Type	Frequency - Switching	Voltage - Input [Min]	Voltage - Input [Max]	Main Purpose
Texas Instruments TPS54218RTER	Positive	2 A	2.95 V	16-WFQFN Exposed Pad	2 MHz	200 kHz	4.5 V	0.803 V	6 V	Surface Mount	150 °C	-40 °C	Adjustable	1	Step-Down	Buck	16-WQFN (3x3)
Texas Instruments TPS54218RTET	Positive	2 A	2.95 V	16-WFQFN Exposed Pad	2 MHz	200 kHz	4.5 V	0.803 V	6 V	Surface Mount	150 °C	-40 °C	Adjustable	1	Step-Down	Buck	16-WQFN (3x3)
Texas Instruments TPS54218EVM-511		2 A																TPS54218	Fully Populated	Buck	Board(s)	1.8 V	Non-Isolated	1	1 MHz	3 V	6 V	DC/DC Step Down

Catalog

2.95V to 6V Input, 2A Synchronous Step-Down SWIFT™ Converter

Key Features

• Two, 30-mΩ (typical) MOSFETs for high-efficiency at 2-A loadsSwitching frequency: 200 kHz to 2 MHzVoltage reference over temperature: 0.8 V ±1%Synchronizes to external clockAdjustable soft start/sequencingUV and OV power-good outputLow operating and shutdown quiescent currentSafe start-up into prebiased outputCycle-by-cycle current limit, thermal and frequency foldback protectionOperating junction temperature range: –40°C to 150°CThermally-enhanced 3-mm × 3-mm 16-pin WQFN packageCreate a custom design using the TPS54218 with theWEBENCH®Power DesignerTwo, 30-mΩ (typical) MOSFETs for high-efficiency at 2-A loadsSwitching frequency: 200 kHz to 2 MHzVoltage reference over temperature: 0.8 V ±1%Synchronizes to external clockAdjustable soft start/sequencingUV and OV power-good outputLow operating and shutdown quiescent currentSafe start-up into prebiased outputCycle-by-cycle current limit, thermal and frequency foldback protectionOperating junction temperature range: –40°C to 150°CThermally-enhanced 3-mm × 3-mm 16-pin WQFN packageCreate a custom design using the TPS54218 with theWEBENCH®Power Designer

Description

TheTPS54218 device is a full-featured, 6-V, 2-A, synchronous, step-down current-mode converter with two integrated MOSFETs. The TPS54218 device 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 device footprint with a small, 3-mm × 3-mm, thermally-enhanced QFN package. The TPS54218 device provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (VREF) over temperature. Efficiency is maximized through the integrated 30-mΩ MOSFETs and a 350-µA typical supply current. Using the EN pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode. Undervoltage 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 soft-start pin. An open-drain power-good signal indicates the output is within 93% to 107% of its nominal voltage. Frequency foldback and thermal shutdown protects the device during an overcurrent condition. For more SWIFT™ documentation, see the TI website atwww.ti.com/swift. TheTPS54218 device is a full-featured, 6-V, 2-A, synchronous, step-down current-mode converter with two integrated MOSFETs. The TPS54218 device 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 device footprint with a small, 3-mm × 3-mm, thermally-enhanced QFN package. The TPS54218 device provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (VREF) over temperature. Efficiency is maximized through the integrated 30-mΩ MOSFETs and a 350-µA typical supply current. Using the EN pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode. Undervoltage 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 soft-start pin. An open-drain power-good signal indicates the output is within 93% to 107% of its nominal voltage. Frequency foldback and thermal shutdown protects the device during an overcurrent condition. For more SWIFT™ documentation, see the TI website atwww.ti.com/swift.