PH

VIN

POWERPAD

BOOT

VSENSE

COMP

TPS54719

EN

RT

SS/TR

PWRGD

C ss

R T

R 3

C 1

C

BOOT

C O

LO

R 1

R 2

C I

VOUT

VIN

AGND

GND

R4

R5

20

30

40

50

60

70

80

90

100

10

100

1k

10k

Load Current (mA)

G022

3.3 V

/ 1.2 V

IN

OUT

5 V

/ 1.2 V

IN

OUT

3.3 V

/ 1.8 V

IN

OUT

5 V

/ 1.8 V

IN

OUT

5 V

/ 3.3 V

IN

OUT

TPS54719

www.ti.com

SLVSB69 – JUNE 2012

2.95 V to 6 V Input, 7-A Synchronous Step Down SWIFT™ Converter

1

FEATURES

DESCRIPTION

The TPS54719 device is a full featured 6 V, 7 A,

2

•

Two 30 m

Ω (typical) MOSFETs for High

synchronous step down current mode converter with

Efficiency at 7-A loads

two integrated MOSFETs.

•

200kHz to 2MHz Switching Frequency

The TPS54719 enables small designs by integrating

•

0.6 V ± 2% Voltage Reference Over

the MOSFETs, implementing current mode control to

Temperature

reduce external component count, reducing inductor

•

Adjustable Slow Start / Sequencing

size by enabling up to 2 MHz switching frequency,

and minimizing the IC footprint with a small 3mm x

•

UV and OV Power Good Output

3mm thermally enhanced QFN package.

•

Low Operating and Shutdown Quiescent

Current

The TPS54719 provides accurate regulation for a

variety of loads with an accurate ±2% Voltage

•

Safe Start-up into Pre-Biased Output

Reference (VREF) over temperature.

•

Cycle by Cycle Current Limit, Thermal and

Efficiency is maximized through the integrated 30m

Ω

Frequency Fold Back Protection

MOSFETs and 455

μA typical supply current. Using

•

–40°C to 140°C Operating Junction

the enable pin, shutdown supply current is reduced to

Temperature Range

1

μA by entering a shutdown mode.

•

Thermally Enhanced 3mm × 3mm 16-pin QFN

Under voltage lockout is internally set at 2.4 V, but

can be increased by programming the threshold with

APPLICATIONS

a resistor network on the enable pin. The output

•

Low-Voltage, High-Density Power Systems

voltage startup ramp is controlled by the slow start

pin. An open drain power good signal indicates the

•

Point of Load Regulation for High Performance

output is within 93% to 108% of its nominal voltage.

DSPs, FPGAs, ASICs and Microprocessors

Frequency fold back and thermal shutdown protects

•

Broadband, Networking and Optical

the device during an overcurrent condition.

Communications Infrastructure

The TPS54719 is supported in the Webench™

SIMPLIFIED SCHEMATIC

Software Tool at www.ti.com/webench.

spacer

1

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.

2

SWIFT, Webench are trademarks of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2012, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.