Specification	TPS54873PWPR

Current - Output	8 A
Frequency - Switching	550 kHz, 350 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	4.4 mm Width, 0.173 "
Package / Case	28-PowerTSSOP
Supplier Device Package	28-HTSSOP
Synchronous Rectifier	True
Topology	Buck
Voltage - Input (Max) [Max]	6 V
Voltage - Input (Min) [Min]	4 V
Voltage - Output (Max) [Max]	3.3 V
Voltage - Output (Min/Fixed)	0.9 V

TPS54873 Series

Part	Current - Output	Frequency - Switching	Output Type	Package / Case	Package / Case	Function	Voltage - Input (Min) [Min]	Number of Outputs	Output Configuration	Topology	Voltage - Input (Max) [Max]	Voltage - Output (Min/Fixed)	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Output (Max) [Max]	Mounting Type	Supplier Device Package	Synchronous Rectifier
Texas Instruments TPS54873PWP	8 A	350 kHz 550 kHz	Adjustable	0.173 " 4.4 mm Width	28-PowerTSSOP	Step-Down	4 V	1	Positive	Buck	6 V	0.9 V	85 C	-40 ¯C	3.3 V	Surface Mount	28-HTSSOP
Texas Instruments TPS54873PWPR	8 A	350 kHz 550 kHz	Adjustable	0.173 " 4.4 mm Width	28-PowerTSSOP	Step-Down	4 V	1	Positive	Buck	6 V	0.9 V	85 C	-40 ¯C	3.3 V	Surface Mount	28-HTSSOP

Pricing

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

Distributor	Package	Quantity	$

Digikey	N/A	0	$ 3.94
	Tape & Reel (TR)	2000	$ 3.09
Texas Instruments	LARGE T&R	1	$ 4.66
		100	$ 3.79
		250	$ 2.98
		1000	$ 2.53

Description

General part information

TPS54873 Series

As a member of the SWIFT™ family of dc/dc regulators, family of dc/dc regulators,the TPS54873 low-input voltage high-output current synchronous buck PWM converter integrates all required active components. Included on the substrate with the listed features are a true, high performance, voltage error amplifier that enables maximum performance and flexibility in choosing the output filter L and C components; an under-voltage-lockout circuit to prevent start-up until the input voltage reaches 4 V; an internally or externally set slow-start circuit to limit inrush currents; and a power good output useful for processor/logic reset, fault signaling, and supply sequencing.

For reliable power up in output precharge applications, the TPS54873 is designed to only source current during startup.

The TPS54873 is available in a thermally enhanced 28-pin TSSOP (PWP) PowerPAD™ package, which eliminates bulky heatsinks. TI provides evaluation modules and the SWIFT™ designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.

Documents

Technical documentation and resources

4-V to 6-V Input, 8-A Output Synchronous Buck Switcher datasheet (Rev. A)

Data sheet