TPS54418 Series

2.95V to 6V Input, 4A Synchronous Step-Down SWIFT™ Converter

Catalog(2 parts)

Part	Voltage - Input (Max)▲▼	Voltage - Output (Max)▲▼	Voltage - Output (Min/Fixed)▲▼	Number of Outputs▲▼	Frequency - Switching▲▼	Frequency - Switching▲▼	Supplier Device Package	Current - Output▲▼	Operating Temperature▲▼	Operating Temperature▲▼	Synchronous Rectifier▲▼	Topology	Output Type	Package / Case	Mounting Type	Output Configuration	Function	Voltage - Input (Min)▲▼
Texas Instruments TPS54418RTER Buck Switching Regulator IC Positive Adjustable 0.803V 1 Output 4A 16-WFQFN Exposed Pad	6 V	4.5 V	0.8029999732971191 V	1 ul	200000 Hz	2000000 Hz	16-WQFN (3x3)	4 A	150 °C	-40 °C		Buck	Adjustable	16-WFQFN Exposed Pad	Surface Mount	Positive	Step-Down	2.950000047683716 V
Texas Instruments TPS54418ARTET Buck Switching Regulator IC Positive Adjustable 0.8V 1 Output 4A 16-WFQFN Exposed Pad	6 V	4.5 V	0.800000011920929 V	1 ul	200000 Hz	2000000 Hz	16-WQFN (3x3)	4 A	150 °C	-40 °C		Buck	Adjustable	16-WFQFN Exposed Pad	Surface Mount	Positive	Step-Down	2.950000047683716 V

Key Features

• Two, 30-mΩ (typical) MOSFETs for High-Efficiency at 4-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 TPS54418 With theWEBENCH®Power DesignerTwo, 30-mΩ (typical) MOSFETs for High-Efficiency at 4-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 TPS54418 With theWEBENCH®Power Designer

Description

TheTPS54418 device is a full-featured, 6-V, 4-A, synchronous, step-down current-mode converter with two integrated MOSFETs. The TPS54418 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 x 3 mm, thermally enhanced, QFN package. The TPS54418 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. TheTPS54418 device is a full-featured, 6-V, 4-A, synchronous, step-down current-mode converter with two integrated MOSFETs. The TPS54418 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 x 3 mm, thermally enhanced, QFN package. The TPS54418 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.