Specification	TPS54494PWP

Current - Output	4 A, 2 A
Frequency - Switching	700 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	16-PowerTSSOP
Package / Case	0.173 in, 4.4 mm Width
Supplier Device Package	16-HTSSOP
Synchronous Rectifier	True
Topology	Buck
Voltage - Input (Max) [Max]	18 V
Voltage - Input (Min) [Min]	4.5 V
Voltage - Output (Max) [Max]	7 V
Voltage - Output (Min/Fixed)	0.76 V

TPS54494 Series

4A Dual Channel Synchronous Step-Down Switcher with Integrated FET

Part	Board Type	Current - Output	Utilized IC / Part	Voltage - Input [Max]	Voltage - Input [Min]	Main Purpose	Outputs and Type	Outputs and Type	Frequency - Switching	Voltage - Output	Supplied Contents	Regulator Topology	Output Configuration	Function	Voltage - Input (Max) [Max]	Operating Temperature [Max]	Operating Temperature [Min]	Output Type	Topology	Voltage - Output (Min/Fixed)	Mounting Type	Voltage - Output (Max) [Max]	Package / Case	Voltage - Input (Min) [Min]	Number of Outputs	Supplier Device Package	Package / Case
Texas Instruments TPS54494EVM-057	Fully Populated	2 A 4 A	TPS54494	18 V	5 V	DC/DC Step Down	2	Non-Isolated	700 kHz	1.5 V 3.3 V	Board(s)	Buck
Texas Instruments TPS54494RSAT		2 A 4 A							700 kHz				Positive	Step-Down	18 V	85 °C	-40 °C	Adjustable	Buck	0.76 V	Surface Mount	7 V	16-VQFN Exposed Pad	4.5 V	2	16-QFN (4x4)
Texas Instruments TPS54494PWP		2 A 4 A							700 kHz				Positive	Step-Down	18 V	85 °C	-40 °C	Adjustable	Buck	0.76 V	Surface Mount	7 V	16-PowerTSSOP	4.5 V	2	16-HTSSOP	0.173 in 4.4 mm Width
Texas Instruments TPS54494RSAR		2 A 4 A							700 kHz				Positive	Step-Down	18 V	85 °C	-40 °C	Adjustable	Buck	0.76 V	Surface Mount	7 V	16-VQFN Exposed Pad	4.5 V	2	16-QFN (4x4)

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 4.04
		10	$ 3.63
		90	$ 2.97
		270	$ 2.82
		540	$ 2.53
		1080	$ 2.14
		2520	$ 2.03
		5040	$ 1.95
Texas Instruments	TUBE	1	$ 3.05
		100	$ 2.67
		250	$ 1.87
		1000	$ 1.51

Description

General part information

TPS54494 Series

The TPS54494 is a dual, adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54494 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, and low standby current solution. The main control loops of the TPS54494 use the D-CAP2™ mode control which provides a very 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 TPS54494 to maintain high efficiency during lighter load conditions. The TPS54494 is able 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 provides convenient and efficient operation with input voltages from 4.5V to 18V.

The TPS54494 is available in a 4.4 mm × 5 mm 16-pin TSSOP (PWP) and 4 mm × 4 mm 16-pin VQFN (RSA) package, and is specified for an ambient temperature range from –40°C to 85°C.

Documents

Technical documentation and resources

Power Management Guide 2018 (Rev. R)

Selection guide

TPS54494 Step-Down Converter Evaluation Module User's Guide (Rev. A)

EVM User's guide

4A/2A Dual Channel Synchronous Step-Down Switcher with Integrated FET, TPS54494 datasheet (Rev. B)

Data sheet