TPS54226 Series

4.5V to 18V Input, 2A Synchronous Step-Down Converter with Eco-Mode™

Catalog

4.5V to 18V Input, 2A Synchronous Step-Down Converter with Eco-Mode™

Part	Voltage - Output (Max) [Max]	Voltage - Output (Min/Fixed)	Function	Current - Output	Number of Outputs	Topology	Voltage - Input (Max) [Max]	Voltage - Input (Min) [Min]	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Package / Case	Package / Case [y]	Package / Case [x]	Output Type	Output Configuration	Frequency - Switching	Mounting Type
Texas Instruments TPS54226PWP	5.5 V	0.76 V	Step-Down	2 A	1	Buck	18 V	2 V	85 °C	-40 °C	14-HTSSOP	14-PowerTSSOP	4.4 mm	0.173 in	Adjustable	Positive	700 kHz	Surface Mount
Texas Instruments TPS54226PWPR	5.5 V	0.76 V	Step-Down	2 A	1	Buck	18 V	2 V	85 °C	-40 °C	14-HTSSOP	14-PowerTSSOP	4.4 mm	0.173 in	Adjustable	Positive	700 kHz	Surface Mount
Texas Instruments TPS54226RGTR	5.5 V	0.76 V	Step-Down	2 A	1	Buck	18 V	2 V	85 °C	-40 °C	16-VQFN (3x3)	16-VFQFN Exposed Pad			Adjustable	Positive	700 kHz	Surface Mount

Catalog

4.5V to 18V Input, 2A Synchronous Step-Down Converter with Eco-Mode™

Key Features

• D-CAP2™ Mode Enables Fast Transient ResponseLow Output Ripple and Allows Ceramic Output CapacitorWide VCCInput Voltage Range: 4.5 V to 18 VWide VINInput Voltage Range: 2 V to 18 VOutput Voltage Range: 0.76 V to 5.5 VHighly Efficient Integrated FET’s Optimizedfor Lower Duty Cycle Applications– 160 mΩ (High Side) and 110 mΩ (Low Side)High Efficiency, less than 10 µA at shutdownAuto-Skip Eco-Mode™ for High Efficiency at Light LoadHigh Initial Bandgap Reference AccuracyAdjustable Soft StartPre-Biased Soft Start700-kHz Switching Frequency (fSW)Cycle By Cycle Over Current LimitPower Good OutputAuto-Skip ModeAPPLICATIONSWide Range of Applications for Low Voltage SystemDigital TV Power SupplyHigh Definition Blu-ray Disc PlayersNetworking Home TerminalDigital Set Top Box (STB)Eco-Mode Is a trademark of Texas InstrumentsPowerPAD Is a trademark of Texas InstrumentsD-CAP2™ Mode Enables Fast Transient ResponseLow Output Ripple and Allows Ceramic Output CapacitorWide VCCInput Voltage Range: 4.5 V to 18 VWide VINInput Voltage Range: 2 V to 18 VOutput Voltage Range: 0.76 V to 5.5 VHighly Efficient Integrated FET’s Optimizedfor Lower Duty Cycle Applications– 160 mΩ (High Side) and 110 mΩ (Low Side)High Efficiency, less than 10 µA at shutdownAuto-Skip Eco-Mode™ for High Efficiency at Light LoadHigh Initial Bandgap Reference AccuracyAdjustable Soft StartPre-Biased Soft Start700-kHz Switching Frequency (fSW)Cycle By Cycle Over Current LimitPower Good OutputAuto-Skip ModeAPPLICATIONSWide Range of Applications for Low Voltage SystemDigital TV Power SupplyHigh Definition Blu-ray Disc PlayersNetworking Home TerminalDigital Set Top Box (STB)Eco-Mode Is a trademark of Texas InstrumentsPowerPAD Is a trademark of Texas Instruments

Description

The TPS54226 is a adaptive on-time D-CAP2™ mode synchronous buck converter. TheTPS54226 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54226 uses the D-CAP2™ mode control which provides a fast transient response with no external compensation components. The adoptive on-time control supports seamless operation between PWM mode at heavy load condition and reduced frequency Eco-Mode operation at light load for high efficiency. The TPS54226 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VCC input, and from 2-V to 18-V VIN input power supply voltage. The output voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable slow start time and a power good function. The TPS54226 is available in the 14 pin HTSSOP or 16 pin QFN package, and designed to operate from –40°C to 85°C. The TPS54226 is a adaptive on-time D-CAP2™ mode synchronous buck converter. TheTPS54226 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54226 uses the D-CAP2™ mode control which provides a fast transient response with no external compensation components. The adoptive on-time control supports seamless operation between PWM mode at heavy load condition and reduced frequency Eco-Mode operation at light load for high efficiency. The TPS54226 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VCC input, and from 2-V to 18-V VIN input power supply voltage. The output voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable slow start time and a power good function. The TPS54226 is available in the 14 pin HTSSOP or 16 pin QFN package, and designed to operate from –40°C to 85°C.