TPS54427 Series

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

Catalog

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

Part	Topology	Current - Output	Frequency - Switching	Output Configuration	Voltage - Output (Min/Fixed)	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Function	Voltage - Output (Max) [Max]	Supplier Device Package	Voltage - Input (Max) [Max]	Package / Case	Output Type	Number of Outputs	Voltage - Input (Min) [Min]	Package / Case [y]	Package / Case [x]
Texas Instruments TPS54427DRCT	Buck	4 A	650 kHz	Positive	0.76 V	85 °C	-40 °C	Surface Mount	Step-Down	7 V	10-VSON (3x3)	18 V	10-VFDFN Exposed Pad	Adjustable	1	4.5 V
Texas Instruments TPS54427DDA	Buck	4 A	650 kHz	Positive	0.76 V	85 °C	-40 °C	Surface Mount	Step-Down	7 V	8-SO PowerPad	18 V	8-PowerSOIC	Adjustable	1	4.5 V	3.9 mm	0.154 in
Texas Instruments TPS54427DRCR	Buck	4 A	650 kHz	Positive	0.76 V	85 °C	-40 °C	Surface Mount	Step-Down	7 V	10-VSON (3x3)	18 V	10-VFDFN Exposed Pad	Adjustable	1	4.5 V
Texas Instruments TPS54427DDAR	Buck	4 A	650 kHz	Positive	0.76 V	85 °C	-40 °C	Surface Mount	Step-Down	7 V	8-SO PowerPad	18 V	8-PowerSOIC	Adjustable	1	4.5 V	3.9 mm	0.154 in

Catalog

4.5V to 18V Input, 4-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 7.0 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.