17

8

7

16

10

BST

SW

PGND

VOUT

VIN

EN

COMP

VREF

TPS53317

9

20

REFIN

V5IN

19

18

6

PGOOD

MODE

GND

PGOOD

PGND

GND

GND

5VIN

UDG-11105

VIN

PGND GND

GND

TPS53317

www.ti.com

SLUSAK4

– JUNE 2011

3.3-V/5-V Input, 6-A, D-CAP+

™ Mode Synchronous Step-Down Integrated FETs Converter

Check for Samples: TPS53317

1

FEATURES

APPLICATIONS

2

•

TI proprietary Integrated MOSFET and

•

VTT Terminators

Packaging Technology

•

Low-Voltage Applications for 1-V to 6-V

•

External Tracking

Step-Down Rails

•

Minimum External Components Count

DESCRIPTION

•

1-V to 6-V Conversion Voltage

The TPS53317 is a fully-integrated,synchronous buck

•

D-CAP+

™ Mode Architecture

regulator employing D-CAP+

™ technology. It is used

•

Supports All MLCC Output Capacitors and

for rail step-downs from 1 V to 6 V where space is a

SP/POSCAP

consideration, and an optimized component count is

•

Selectable SKIP and Forced CCM

required.

•

Optimized Efficiency at Light and Heavy Loads

The TPS53317 features two switching frequency

•

Selectable 600-kHz and 1-MHz Switching

settings (600 kHz and 1 MHz), synchronous operation

Frequency

in skip (low ripple) mode, integrated droop support,

•

Selectable Overcurrent Limit (OCL)

external tracking support, pre-bias startup, output soft

discharge, integrated bootstrap switch, power good

•

Overvoltage Protection and Hiccup

function, EN/Input UVLO protection, and both output

Undervoltage Protection

ceramic

and

SP/POS/AL

capacitor

support.

It

•

Thermal Shutdown

supports supply and conversion voltages up to 6.0 V,

•

Adjustable Output Voltage Ranging Between

and output voltages adjustable from 0.6 V to 2.0 V. It

0.6 V and 2 V

also provides external tracking support.

•

Small 3.5 mm

× 4 mm, 20-Pin QFN Package

The TPS53317 is available in the 3.5 mm by 4 mm,

20-pin QFN package (Green RoHs compliant and Pb

free) with TI proprietary Integrated MOSFET and

packaging technology and is specified from -40

°C to

85

°C.

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

D-CAP+ 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.