TPS54327 Series

4.5V to 18V Input, 3-A Synchronous Step-Down Converter

Catalog

4.5V to 18V Input, 3-A Synchronous Step-Down Converter

Part	Function	Mounting Type	Current - Output	Output Configuration	Topology	Package / Case [y]	Package / Case [x]	Package / Case	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Voltage - Output (Min/Fixed)	Voltage - Input (Min) [Min]	Number of Outputs	Frequency - Switching	Output Type	Voltage - Output (Max) [Max]	Synchronous Rectifier	Voltage - Input (Max) [Max]
Texas Instruments TPS54327DDAR	Step-Down	Surface Mount	3 A	Positive	Buck	3.9 mm	0.154 in	8-PowerSOIC	85 °C	-40 °C	8-SO PowerPad	0.76 V	4.5 V	1	700 kHz	Adjustable	7 V		18 V
Texas Instruments TPS54327DRCR	Step-Down	Surface Mount	3 A	Positive	Buck			10-VFDFN Exposed Pad	85 °C	-40 °C	10-VSON (3x3)	0.76 V	4.5 V	1	700 kHz	Adjustable	7 V		18 V

Catalog

4.5V to 18V Input, 3-A Synchronous Step-Down Converter

Key Features

• D-CAP2™ Mode Enables Fast TransientResponseLow-Output Ripple and Allows Ceramic OutputCapacitorWide VINInput Voltage Range: 4.5 V to 18 VOutput Voltage Range: 0.76 V to 7 VHighly Efficient Integrated FETs Optimizedfor Lower Duty Cycle Applications– 100 mΩ (High-Side) and 70 mΩ (Low-Side)High Efficiency, Less Than 10 µA at shutdownHigh Initial Bandgap Reference AccuracyAdjustable Soft StartPrebiased Soft Start700-kHz Switching Frequency (fSW)Cycle-By-Cycle Overcurrent LimitAPPLICATIONSWide Range of Applications for Low VoltageSystemDigital TV Power SupplyHigh Definition Blu-ray Disc™ PlayersNetworking Home TerminalDigital Set Top Box (STB)All other trademarks are the property of their respective ownersD-CAP2™ Mode Enables Fast TransientResponseLow-Output Ripple and Allows Ceramic OutputCapacitorWide VINInput Voltage Range: 4.5 V to 18 VOutput Voltage Range: 0.76 V to 7 VHighly Efficient Integrated FETs Optimizedfor Lower Duty Cycle Applications– 100 mΩ (High-Side) and 70 mΩ (Low-Side)High Efficiency, Less Than 10 µA at shutdownHigh Initial Bandgap Reference AccuracyAdjustable Soft StartPrebiased Soft Start700-kHz Switching Frequency (fSW)Cycle-By-Cycle Overcurrent LimitAPPLICATIONSWide Range of Applications for Low VoltageSystemDigital TV Power SupplyHigh Definition Blu-ray Disc™ PlayersNetworking Home TerminalDigital Set Top Box (STB)All other trademarks are the property of their respective owners

Description

The TPS54327 device is an adaptive on-time D-CAP2™ mode synchronous buck converter. TheTPS54327 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 TPS54327 uses the D-CAP2 mode control which provides a fast transient response with no external compensation components. The TPS54327 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 VIN input. The output voltage can be programmed between 0.76 V and 7 V. The device also features an adjustable soft start time. The TPS54327 is available in the 8-pin DDA package and 10-pin DRC, and is designed to operate from –40°C to 85°C. The TPS54327 device is an adaptive on-time D-CAP2™ mode synchronous buck converter. TheTPS54327 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 TPS54327 uses the D-CAP2 mode control which provides a fast transient response with no external compensation components. The TPS54327 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 VIN input. The output voltage can be programmed between 0.76 V and 7 V. The device also features an adjustable soft start time. The TPS54327 is available in the 8-pin DDA package and 10-pin DRC, and is designed to operate from –40°C to 85°C.