TPS54228DR

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Texas Instruments

4.5V TO 18V INPUT, 2-A SYNCHRONOUS STEP-DOWN CONVERTER WITH ECO-MODE™

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TPS54228DR

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Texas Instruments

4.5V TO 18V INPUT, 2-A SYNCHRONOUS STEP-DOWN CONVERTER WITH ECO-MODE™

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Description Specifications Series Pricing CAD Documents

Description

General part information

TPS54228 Series

The TPS54228 device is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54228 enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54228 uses the D-CAP2™ mode control that provides a fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-Mode™ operation at light loads. Eco-Mode™ allows the TPS54228 to maintain high efficiency during lighter load conditions. The TPS54228 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 TPS54228 is available in 8-pin SO , 8-pin SOIC, and 10-pin VSON packages, and is designed to operate over the ambient temperature range of –40°C to 85°C.

Technical Specifications

Parameters and characteristics for this part

Specification	TPS54228DR

Current - Output	2 A
Frequency - Switching	700 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package Length	0.154 in
Package Name	8-SOIC
Package Width	3.9 mm
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Input (Max)	18 V
Voltage - Input (Min)	4.5 V
Voltage - Output (Max)	7 V
Voltage - Output (Min/Fixed)	0.76 V

TPS54228 Series

Part	Operating Temperature (Max)	Operating Temperature (Min)	Voltage - Output (Min/Fixed)	Package Name	Output Configuration	Mounting Type	Number of Outputs	Synchronous Rectifier	Topology	Voltage - Input (Min)	Voltage - Input (Max)	Output Type	Voltage - Output (Max)	Frequency - Switching	Function	Package Width	Package Length	Current - Output	Package / Case	Total Output Count	Non-Isolated Output Count	Board Type	Supplied Contents	Main Purpose	Voltage - Output	Contents	Voltage - Input (Minimum)	Voltage - Input (Maximum)	Regulator Topology	Utilized IC / Part
Texas Instruments TPS54228DDA	85 °C	-40 °C	0.76 V	8-PowerSOIC 8-SO PowerPad	Positive	Surface Mount	1	Yes	Buck	4.5 V	18 V	Adjustable	7 V	700 kHz	Step-Down	3.9 mm	0.154 in	2 A
Texas Instruments TPS54228DRCT	85 °C	-40 °C	0.76 V	10-VSON	Positive	Surface Mount	1	Yes	Buck	4.5 V	18 V	Adjustable	7 V	700 kHz	Step-Down	3 mm	3 mm	2 A	10-VFDFN Exposed Pad
Texas Instruments TPS54228DDAR	85 °C	-40 °C	0.76 V	8-PowerSOIC 8-SO PowerPad	Positive	Surface Mount	1	Yes	Buck	4.5 V	18 V	Adjustable	7 V	700 kHz	Step-Down	3.9 mm	0.154 in	2 A
Texas Instruments TPS54228DR	85 °C	-40 °C	0.76 V	8-SOIC	Positive	Surface Mount	1	Yes	Buck	4.5 V	18 V	Adjustable	7 V	700 kHz	Step-Down	3.9 mm	0.154 in	2 A
Texas Instruments TPS54228D	85 °C	-40 °C	0.76 V	8-SOIC	Positive	Surface Mount	1	Yes	Buck	4.5 V	18 V	Adjustable	7 V	700 kHz	Step-Down	3.9 mm	0.154 in	2 A
Texas Instruments TPS54228EVM-686												Non-Isolated		700 kHz				2 A		1	1 count	Fully Populated	Board(s)	DC/DC Step Down	1.05 V	Board	4.5 V	18 V	Buck	TPS54228
Texas Instruments TPS54228DRCR	85 °C	-40 °C	0.76 V	10-VSON	Positive	Surface Mount	1	Yes	Buck	4.5 V	18 V	Adjustable	7 V	700 kHz	Step-Down	3 mm	3 mm	2 A	10-VFDFN Exposed Pad