TPS54326 Series

4.5V to 18V Input, 3A Synchronous Step-Down Converter with Eco-Mode™

Catalog

4.5V to 18V Input, 3A Synchronous Step-Down Converter with Eco-Mode™

Part	Number of Outputs	Voltage - Input (Max) [Max]	Output Type	Frequency - Switching	Voltage - Output (Max) [Max]	Topology	Current - Output	Voltage - Output (Min/Fixed)	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Output Configuration	Voltage - Input (Min) [Min]	Supplier Device Package	Function	Mounting Type	Package / Case [y]	Package / Case [x]	Main Purpose	Regulator Topology	Utilized IC / Part	Supplied Contents	Voltage - Output	Voltage - Input [Max]	Voltage - Input [Min]	Outputs and Type	Outputs and Type	Board Type
Texas Instruments TPS54326RGTT	1	18 V	Adjustable	700 kHz	5.5 V	Buck	3 A	0.76 V	85 °C	-40 °C	16-VFQFN Exposed Pad	Positive	2 V	16-VQFN (3x3)	Step-Down	Surface Mount
Texas Instruments TPS54326PWP	1	18 V	Adjustable	700 kHz	5.5 V	Buck	3 A	0.76 V	85 °C	-40 °C	14-PowerTSSOP	Positive	2 V	14-HTSSOP	Step-Down	Surface Mount	4.4 mm	0.173 in
Texas Instruments TPS54326PWPR	1	18 V	Adjustable	700 kHz	5.5 V	Buck	3 A	0.76 V	85 °C	-40 °C	14-PowerTSSOP	Positive	2 V	14-HTSSOP	Step-Down	Surface Mount	4.4 mm	0.173 in
Texas Instruments TPS54326EVM-540				700 kHz			3 A												DC/DC Step Down	Buck	TPS54326	Board(s)	1.05 V	18 V	4.5 V	Non-Isolated	1	Fully Populated

Catalog

4.5V to 18V Input, 3A 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- 120 mΩ (High Side) and 70 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 Overcurrent LimitPower Good OutputAPPLICATIONSWide Range of Applications for Low Voltage SystemDigital TV Power SupplyHigh Definition Blu-ray Disc PlayersNetworking Home TerminalDigital Set Top Box (STB)D-CAP2 Is a trademark of Texas InstrumentsPowerPAD Is a trademark of Texas InstrumentsPowerD-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- 120 mΩ (High Side) and 70 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 Overcurrent LimitPower Good OutputAPPLICATIONSWide Range of Applications for Low Voltage SystemDigital TV Power SupplyHigh Definition Blu-ray Disc PlayersNetworking Home TerminalDigital Set Top Box (STB)D-CAP2 Is a trademark of Texas InstrumentsPowerPAD Is a trademark of Texas InstrumentsPower

Description

The TPS54326 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54326 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 TPS54326 uses the D-CAP2™ mode control which provides a fast transient response with no external 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 TPS54326 also has a proprietary circuit that enables the device to adapt 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 VCCinput , 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 TPS54326 is available in the 14 pin HTSSOP or 16 pin QFN package, and designed to operate from –40°C to 85°C. The TPS54326 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54326 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 TPS54326 uses the D-CAP2™ mode control which provides a fast transient response with no external 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 TPS54326 also has a proprietary circuit that enables the device to adapt 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 VCCinput , 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 TPS54326 is available in the 14 pin HTSSOP or 16 pin QFN package, and designed to operate from –40°C to 85°C.