TPS53316

VIN

SW

Output All MLCCs

UDG-11233

PGD

PGD

FB

COMP

VREG3

AGND

RF/OC

EN

PS

VBST

EN

PowerPad

2.9 V to 6 V

TPS53316

www.ti.com

SLUSAP5

– DECEMBER 2011

High-Efficiency, 5-A Step-Down Regulator with Integrated Switcher

Check for Samples: TPS53316

1

FEATURES

LOW VOLTAGE APPLICATIONS

2

•

96% Maximum Efficiency

•

Low-Voltage Applications for 5-V Step-Down

Rail

•

Continuous 5-A Output Current Capability

•

Low-Voltage Applications for 3.3-V Step-Down

•

Support all MLCC Output Capacitor

Rail

•

SmoothPWM

™ Auto-Skip Eco-mode™ for

Light-Load Efficiency

DESCRIPTION

•

Voltage Mode Control

TPS53316 provides a fully integrated 3.3-V or 5-V

•

Single Rail Input

input, synchronous buck converter with 16 total

•

Selectable Frequency

•

Selectable OCP Threshold

of operation, it enables 96% peak efficiency and over

•

Selectable Soft-Start Time

90% efficiency at load as light as 100 mA. It requires

•

2.9 V to 6.0 V Input Voltage Range

only two 22-

µF ceramic output capacitors for a

power-dense, 5-A solution.

•

Adjustable Output Voltage Ranging from 0.6 V

up to 0.8

TPS53316 features 750-kHz, 1.1-MHz and 2-MHz

switching

frequency

selections,

pre-bias

startup,

•

Soft-Stop Output Discharge During Disable

selectable internal softstart, output soft discharge,

•

Overcurrent, Overvoltage and

Internal VBST switch, power good, EN/Input UVLO,

Over-Temperature Protection

overcurrent,

overvoltage,

undervoltage

and

over

•

Open-Drain Power Good Indication

temperature

protections

and

all

ceramic

output

capacitor support. It supports input voltages from 2.9

•

Internal Bootstrap Switch

V to 6.0 V and no extra bias voltage is needed. The

•

Supports Pre-Bias Start-Up Functionality

output voltage is adjustable from 0.6 V up to 0.8

×

•

Small 3

× 3, 16-Pin, QFN Package

•

TPS53316 is available in the 3 mm

× 3 mm ,16-pin,

with 5-V Input

QFN package (Green RoHs compliant and Pb free)

and is specified from

–40°C to 85°C.

TYPICAL APPLICATION CIRCUIT

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

Eco-mode, SmoothPWM are trademarks of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright

© 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.