TPS54873PWP datasheet(1/15 Pages) TI

tên linh kiện	TPS54873PWP

Giải thích chi tiết về linh kiện	4-V TO 6-V INPUT, 8-A OUTPUT SYNCHRONOUS BUCK SWITCHER WITH DISABLED SINKING DURING START-UP

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nhà sản xuất	TI [Texas Instruments]

Trang chủ	http://www.ti.com

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TPS54873

SLVS444 – OCTOBER 2002

4-V TO 6-V INPUT, 8-A OUTPUT SYNCHRONOUS BUCK

SWITCHER WITH DISABLED SINKING DURING START-UP

6,4 mm X 9,7 mm

Typical Size

FEATURES

D 30-mΩ, 12-A Peak MOSFET Switches for High

Efficiency at 8-A Continuous Output Source

or Sink Current

D Disabled Current Sinking During Start-Up

D 0.9-V to 3.3-V Adjustable Output Voltage

Range With 1.0% Accuracy

D Wide PWM Frequency:

Fixed 350 kHz, 550 kHz or

Adjustable 280 kHz to 700 kHz

D Synchronizable to 700 kHz

D Load Protected by Peak Current Limit and

Thermal Shutdown

D Integrated Solution Reduces Board Area and

Component Count

APPLICATIONS

D Low-Voltage, High-Density Distributed Power

Systems

D Point of Load Regulation for High

Performance DSPs, FPGAs, ASICs and

Microprocessors

D Broadband, Networking and Optical

Communications Infrastructure

D Power PC Series Processors

DESCRIPTION

As a member of the SWIFT

 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.

TYPICAL APPLICATION

VIN

PH

BOOT

PGND

VSENSE

Core Supply

COMP

AGND

VBIAS

I/O Supply

TPS54873

**

* Optional

5.0 ms/div

START-UP WAVEFORM

VO = 3.3 V

**

VI = 5 V

PRODUCTION DATA information is current as of publication date. Products

conform to specifications per the terms of Texas Instruments standard warranty.

Production processing does not necessarily include testing of all parameters.

PowerPAD and SWIFT are trademarks of Texas Instruments.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments

semiconductor products and disclaimers thereto appears at the end of this data sheet.

www.ti.com

Copyright

 2002, Texas Instruments Incorporated

Số phần tương tự - TPS54873PWP

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Texas Instruments	TPS54873PWP	282Kb / 10P	4-V TO 6-V INPUT, 8-A OUTPUT SYNCHRONOUS BUCK SWITCHER WITH DISABLED SINKING DURING START-UP
	TPS54873PWP	707Kb / 23P	4-V TO 6-V INPUT, 8-A OUTPUT SYNCHRONOUS BUCK SWITCHER WITH DISABLED SINKING DURING START-UP
	TPS54873PWP	949Kb / 24P	4-V TO 6-V INPUT, 8-A OUTPUT SYNCHRONOUS BUCK SWITCHER WITH DISABLED SINKING DURING START-UP REVISED FEBRUARY 2005
	TPS54873PWP.A	949Kb / 24P	4-V TO 6-V INPUT, 8-A OUTPUT SYNCHRONOUS BUCK SWITCHER WITH DISABLED SINKING DURING START-UP REVISED FEBRUARY 2005
	TPS54873PWPG4	707Kb / 23P	4-V TO 6-V INPUT, 8-A OUTPUT SYNCHRONOUS BUCK SWITCHER WITH DISABLED SINKING DURING START-UP

More results

Mô tả tương tự - TPS54873PWP

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Texas Instruments	TPS54373	259Kb / 16P	3-V TO 6-V INPUT,3-A OUTPUT SYNCHRONOUS BUCK SWITCHER WITH DISABLED SINKING DURING START-UP
	TPS54973	282Kb / 10P	3-V TO 4-V INPUT, 9-A OUTPUT SYNCHRONOUS BUCK SWITCHER WITH DISABLED SINKING DURING START-UP
	TPS54873PWP	282Kb / 10P	4-V TO 6-V INPUT, 8-A OUTPUT SYNCHRONOUS BUCK SWITCHER WITH DISABLED SINKING DURING START-UP
	TPS54073	1Mb / 23P	2.2 - 4 -V, 14-A SYNCHRONOUS BUCK CONVERTER WITH DISABLED SINKING DURING START-UP
	TPS54373	701Kb / 22P	3-V TO 6-V INPUT, 3-A OUTPUT SYNCHRONOUS BUCK SWITCHER WITH DISABLED SINKING DURING START-UP
	TPS54673	669Kb / 21P	3-V TO 6-V INPUT, 6-A OUTPUT SYNCHRONOUS BUCK SWITCHER WITH DISABLED SINKING DURING START-UP
	TPS54873	697Kb / 23P	4-V TO 6-V INPUT, 8-A OUTPUT SYNCHRONOUS BUCK SWITCHER WITH DISABLED SINKING DURING START-UP
	TPS54973	695Kb / 23P	3-V TO 4-V INPUT, 9-A OUTPUT SYNCHRONOUS BUCK SWITCHER WITH DISABLED SINKING DURING START-UP
	TPS54073	666Kb / 25P	2.2 ??4 -V, 14-A SYNCHRONOUS BUCK CONVERTER WITH DISABLED SINKING DURING START-UP
	TPS54873	707Kb / 23P	4-V TO 6-V INPUT, 8-A OUTPUT SYNCHRONOUS BUCK SWITCHER WITH DISABLED SINKING DURING START-UP

More results

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