TPS54427 Series

4.5V to 18V Input, 4-A Synchronous Step-Down Converter

Catalog(5 parts)

Part	Frequency - Switching▲▼	Voltage - Output▲▼	Voltage - Input▲▼	Voltage - Input▲▼	Main Purpose	Board Type	Utilized IC / Part	Outputs and Type	Outputs and Type▲▼	Supplied Contents	Current - Output▲▼	Voltage - Output (Max)▲▼	Number of Outputs▲▼	Voltage - Output (Min/Fixed)▲▼	Function	Voltage - Input (Max)▲▼	Operating Temperature▲▼	Operating Temperature▲▼	Output Configuration	Mounting Type	Output Type	Package / Case	Topology	Voltage - Input (Min)▲▼	Supplier Device Package	Package / Case▲▼	Package / Case▲▼
Texas Instruments TPS54427EVM-052 TPS54427 SWIFT™, D-CAP2™ DC/DC, Step Down 1, Non-Isolated Outputs Evaluation Board	650000 Hz	1.0499999523162842 V	18 V	4.5 V	DC/DC, Step Down	Fully Populated	TPS54427	Non-Isolated	1 ul	Board(s)	4 A
Texas Instruments TPS54427DRCT Buck Switching Regulator IC Positive Adjustable 0.76V 1 Output 4A 10-VFDFN Exposed Pad	650000 Hz										4 A	7 V	1 ul	0.7599999904632568 V	Step-Down	18 V	85 °C	-40 °C	Positive	Surface Mount	Adjustable	10-VFDFN Exposed Pad	Buck	4.5 V	10-VSON (3x3)
Texas Instruments TPS54427DDA Buck Switching Regulator IC Positive Adjustable 0.76V 1 Output 4A 8-PowerSOIC (0.154", 3.90mm Width)	650000 Hz										4 A	7 V	1 ul	0.7599999904632568 V	Step-Down	18 V	85 °C	-40 °C	Positive	Surface Mount	Adjustable	8-PowerSOIC	Buck	4.5 V	8-SO PowerPad	0.003899999894201755 m	0.003911599982529879 m
Texas Instruments TPS54427DRCR Buck Switching Regulator IC Positive Adjustable 0.76V 1 Output 4A 10-VFDFN Exposed Pad	650000 Hz										4 A	7 V	1 ul	0.7599999904632568 V	Step-Down	18 V	85 °C	-40 °C	Positive	Surface Mount	Adjustable	10-VFDFN Exposed Pad	Buck	4.5 V	10-VSON (3x3)
Texas Instruments TPS54427DDAR Buck Switching Regulator IC Positive Adjustable 0.76V 1 Output 4A 8-PowerSOIC (0.154", 3.90mm Width)	650000 Hz										4 A	7 V	1 ul	0.7599999904632568 V	Step-Down	18 V	85 °C	-40 °C	Positive	Surface Mount	Adjustable	8-PowerSOIC	Buck	4.5 V	8-SO PowerPad	0.003899999894201755 m	0.003911599982529879 m

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 7.0 VHighly Efficient Integrated FETs Optimizedfor Lower Duty Cycle Applications– 70 mΩ (High Side) and 53 mΩ (Low Side)High Efficiency, Less Than 10 µA at ShutdownHigh Initial Bandgap Reference AccuracyAdjustable Soft StartPre-Biased Soft Start650-kHz Switching Frequency (fSW)Cycle by Cycle Over Current LimitD-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 7.0 VHighly Efficient Integrated FETs Optimizedfor Lower Duty Cycle Applications– 70 mΩ (High Side) and 53 mΩ (Low Side)High Efficiency, Less Than 10 µA at ShutdownHigh Initial Bandgap Reference AccuracyAdjustable Soft StartPre-Biased Soft Start650-kHz Switching Frequency (fSW)Cycle by Cycle Over Current Limit

Description

The TPS54427 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54427 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 TPS54427 uses the D-CAP2™ mode control which provides a fast transient response with no external compensation components. The TPS54427 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 TPS54427 is available in the 8-pin DDA package and 10-pin DRC, and is designed to operate from –40°C to 85°C. The TPS54427 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54427 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 TPS54427 uses the D-CAP2™ mode control which provides a fast transient response with no external compensation components. The TPS54427 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 TPS54427 is available in the 8-pin DDA package and 10-pin DRC, and is designed to operate from –40°C to 85°C.