(6,3 mm x 6,4 mm)

Typical Size

VIN

PH

TPS54110

BOOT

PGND

COMP

VSENSE

AGND

VBIAS

Compensation

Network

Input

Output

50

55

60

65

70

75

80

85

90

95

100

0

0.25

0

.

5

0

.

75

1

1.25

1

.

5

I -

O

Output Current - A

EFFICIENCY

vs

OUTPUT CURRENT

100 µF

2200 pF

0.047 µF

0.1 µF

10 µF

3.92 k

2.05 k

3.92 k

19.1 k

6.8 µH

2700 pF

33 pF

Simplified Schematic

.

TPS54110

www.ti.com

SLVS500C

– DECEMBER 2003 – REVISED FEBRUARY 2011

3-V TO 6-V Input, 1.5-A Output Synchronous-Buck PWM

Switcher with Integrated FETs ( SWIFT

™)

Check for Samples: TPS54110

1

FEATURES

DESCRIPTION

2

•

Integrated MOSFET Switches for High

As members of the SWIFT family of dc/dc regulators,

Efficiency at 1.5-A Continuous Output Source

the TPS54110 low-input-voltage high-output-current

or Sink Current

synchronous-buck

PWM

converter

integrates

all

required

active

components.

Included

on

the

•

0.9-V to 3.3-V Adjustable Output Voltage With

substrate with the listed features are a true, high-

1% Accuracy

performance, voltage error amplifier that provides

•

Externally Compensated for Design Flexibility

high performance under transient conditions; an

•

Fast Transient Response

undervoltage-lockout circuit to prevent start-up until

the input voltage reaches 3 V; an internally and

•

Wide PWM Frequency: Fixed 350 kHz, 550 kHz,

externally

set

slow-start

circuit

to

limit

in-rush

or Adjustable 280 kHz to 700 kHz

currents;

and

a

power-good

output

useful

for

•

Load Protected by Peak Current Limit and

processor/logic reset, fault signaling, and supply

Thermal Shutdown

sequencing.

•

Integrated Solution Reduces Board Area and

The TPS54110 device is available in a thermally

Total Cost

enhanced

20-pin

TSSOP

(PWP)

PowerPAD

™

package,

which

eliminates

bulky

heatsinks.

TI

APPLICATIONS

provides evaluation modules and the SWIFT designer

software tool to aid in quickly achieving high-

•

Low-Voltage, High-Density Systems With

performance

power

supply

designs

to

meet

Power Distributed at 5 V or 3.3 V

aggressive equipment development cycles.

•

Point of Load Regulation for High

Performance DSPs, FPGAs, ASICs, and

Microprocessors

•

Broadband, Networking, and Optical

Communications Infrastructure

•

Portable Computing/Notebook PCs

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, PowerPAD are trademarks of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

© 2003–2011, 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.