TPS53313

VIN

SW

Output All MLCCs

UDG-11254

PG

FB

COMP

BP7

AGND

RT/SYNC

EN

MODE/SS

VBST

PowerPad

PGND

BP3

EN

PGOOD

TPS53313

www.ti.com

SLUSAS8

– DECEMBER 2011

6-A Step-Down Regulator with Integrated Switcher

Check for Samples: TPS53313

1

FEATURES

LOW VOLTAGE APPLICATIONS

2

•

4.5-V to 16-V Conversion Voltage Range

•

POL Applications for 5-V or 12-V Step-Down

Rail

•

Adjustable Output Voltage Ranging from 0.6 V

to 0.7

DESCRIPTION

•

Continuous 6-A Output Current

TPS53313 provides a 5-V or 12-V synchronous buck

•

Supports All MLCC Output Capacitors

converter that integrates two N-Channel MOSFETs.

•

Selectable SKIP Mode or Forced CCM

skip mode of operation, it optimizes the efficiency at

•

Selectable Soft-Start Time (1 ms, 3 ms, or 6

light-load condition without compromising the output

ms)

voltage ripple.

•

Selectable 4-5 A, 6-A or 9-A Peak Current Limit

The TPS53313 features programmable (from 250

•

Optimized Efficiency at Light and Heavy Loads

kHz to 1.5MHz) switching frequency with selectable

•

Voltage Mode Control

skip mode or forced CCM mode operation. The

•

Programmable Switching Frequency from

device

provides

pre-biased

startup,

soft-stop,

integrated bootstrap switch, power good function,

250 kHz to 1.5 MHz

EN/input UVLO protection. It supports input voltages

•

Synchronizes to External Clock

from 4.5 V to 16 V and no extra bias voltage is

•

needed. The output voltage is adjustable from 0.6 V

and Overcurrent Protection

up to 0.7

•

Soft-Stop Output Discharge During Disable

The TPS53313 is available in a 4 mm

× 4 mm,

•

Overcurrent, Overvoltage and Undervoltage

24-pin, QFN package (Green RoHs compliant and Pb

Protection with Hiccup

free) and operates between -40

°C and 85°C.

•

Over-Temperature Protection

•

Open-Drain, Power Good Indication

•

Internal Bootstrap Switch

•

4 mm

× 4 mm, 24-Pin, QFN Package

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

SmoothPWM is a trademark 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.