Features

	6,4 mm X 9,7 mm
www.ti.com	TPS54810
	SLVS420B − MARCH 2002 − R EVISED FEBRUARY 2005

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

SWITCHER WITH INTEGRATED FETS (SWIFT™)

D30-mΩMOSFET Switches for High Efficiency at 8-A Continuous Output

D0.9-V to 3.3-V Adjustable Output Voltage Range With 1% Accuracy

DExternally Compensated

DFast Transient Response

DWide PWM Frequency: Fixed 350 kHz, 550 kHz or Adjustable 280 kHz to 700 kHz

DLoad Protected by Peak Current Limit and Thermal Shutdown

DIntegrated Solution Reduces Board Area and Total Cost

APPLICATIONS

DLow-Voltage, High-Density Systems With Power Distributed at 5 V

DPoint of Load Regulation for High Performance DSPs, FPGAs, ASICs and Microprocessors

DBroadband, Networking, and Optical Communications Infrastructure

DPortable Computing/Notebook PCs

DESCRIPTION

As a member of the SWIFT™ family of dc/dc regulators, the TPS54810 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 under transient conditions 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 3.8 V; an internally or externally set slow-start circuit to limit in-rush currents; and a power good output useful for processor/logic reset, fault signaling, and supply sequencing.

The TPS54810 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.

SIMPLIFIED SCHEMATIC
Input	Output
VIN	PH
TPS54810
	BOOT
	PGND
VBIAS	VSENSE
	VSENSE
	COMP
AGND	VSENSE
	Compensation Network

EFFICIENCY AT 700 HZ

	100							VI = 5 V
	95							VI = 5 V
	95							VO = 3.3 V
	90
	85
− %	80
Efficiency	75
	70
	65
	65
	60
	55
	50 0	1	2	3	4	5	6	7	8	9	10
				IL − Load Current − A

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.

PowerPAD and SWIFT are trademarks of Texas Instruments.

PRODUCTION DATA information is current as of publication date. Products	Copyright ♥ 2002, Texas Instruments Incorporated
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.