Specification	TPS54326PWPR

Current - Output	3 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 / Case	14-PowerTSSOP
Package / Case [x]	0.173 in
Package / Case [y]	4.4 mm
Supplier Device Package	14-HTSSOP
Synchronous Rectifier	True
Topology	Buck
Voltage - Input (Max) [Max]	18 V
Voltage - Input (Min) [Min]	2 V
Voltage - Output (Max) [Max]	5.5 V
Voltage - Output (Min/Fixed)	0.76 V

TPS54326 Series

4.5V to 18V Input, 3A Synchronous Step-Down Converter with Eco-Mode™

Part	Number of Outputs	Voltage - Input (Max) [Max]	Output Type	Frequency - Switching	Voltage - Output (Max) [Max]	Topology	Current - Output	Voltage - Output (Min/Fixed)	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Output Configuration	Voltage - Input (Min) [Min]	Supplier Device Package	Function	Mounting Type	Package / Case [y]	Package / Case [x]	Main Purpose	Regulator Topology	Utilized IC / Part	Supplied Contents	Voltage - Output	Voltage - Input [Max]	Voltage - Input [Min]	Outputs and Type	Outputs and Type	Board Type
Texas Instruments TPS54326RGTT	1	18 V	Adjustable	700 kHz	5.5 V	Buck	3 A	0.76 V	85 °C	-40 °C	16-VFQFN Exposed Pad	Positive	2 V	16-VQFN (3x3)	Step-Down	Surface Mount
Texas Instruments TPS54326PWP	1	18 V	Adjustable	700 kHz	5.5 V	Buck	3 A	0.76 V	85 °C	-40 °C	14-PowerTSSOP	Positive	2 V	14-HTSSOP	Step-Down	Surface Mount	4.4 mm	0.173 in
Texas Instruments TPS54326PWPR	1	18 V	Adjustable	700 kHz	5.5 V	Buck	3 A	0.76 V	85 °C	-40 °C	14-PowerTSSOP	Positive	2 V	14-HTSSOP	Step-Down	Surface Mount	4.4 mm	0.173 in
Texas Instruments TPS54326EVM-540				700 kHz			3 A												DC/DC Step Down	Buck	TPS54326	Board(s)	1.05 V	18 V	4.5 V	Non-Isolated	1	Fully Populated

Pricing

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

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 1.85
		10	$ 1.66
		25	$ 1.57
		100	$ 1.33
		250	$ 1.25
		500	$ 1.10
		1000	$ 0.91
	Digi-Reel®	1	$ 1.85
		10	$ 1.66
		25	$ 1.57
		100	$ 1.33
		250	$ 1.25
		500	$ 1.10
		1000	$ 0.91
	Tape & Reel (TR)	2000	$ 0.78
Texas Instruments	LARGE T&R	1	$ 1.39
		100	$ 1.15
		250	$ 0.82
		1000	$ 0.62

Description

General part information

TPS54326 Series

The TPS54326 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54326 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 TPS54326 uses the D-CAP2™ mode control which provides a fast transient response with no external components. The adoptive on-time control supports seamless operation between PWM mode at heavy load condition and reduced frequency Eco-mode operation at light load for high efficiency.

The TPS54326 also has a proprietary circuit that enables the device 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 operates from 4.5-V to 18-V VCCinput , and from 2-V to 18-V VIN input power supply voltage. The output voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable slow start time and a power good function. The TPS54326 is available in the 14 pin HTSSOP or 16 pin QFN package, and designed to operate from –40°C to 85°C.

Documents

Technical documentation and resources

Datasheet

TPS54326 Step-Down Converter Evaluation Module User's Guide (Rev. A)

User guide

Understanding Thermal Dissipation and Design of a Heatsink

Application note

D-CAP2 Frequency Response Model, based on frequency domain analysis of Fixed On-

Application note

Keeping DC/DC solutions (super) simple for cost-sensitive applications

Technical article

SWIFT DC/DC Converters Selector Guide (Rev. G)

Selection guide