DATASHEET TABLE OF CONTENTS

ENVIRONMENTAL AND ABSOLUTE MAXIMUM RATINGS

PTH08T255W

ORDERING INFORMATION

For the most current package and ordering information, see the Package Option Addendum at the end of this datasheet, or see

the TI website at www.ti.com.

DATASHEET SECTION

PAGE NUMBER

ENVIRONMENTAL AND ABSOLUTE MAXIMUM RATINGS

3

ELECTRICAL CHARACTERISTICS TABLE (PTH08T255W)

4

TERMINAL FUNCTIONS

6

7

ADJUSTING THE OUTPUT VOLTAGE

8

INPUT & OUTPUT CAPACITOR RECOMMENDATIONS

9

TURBOTRANS™ INFORMATION

13

SOFT-START POWER-UP

17

REMOTE SENSE

17

OUTPUT INHIBIT

18

OVERCURRENT PROTECTION

18

OVER-TEMPERATURE PROTECTION

18

SYCHRONIZATION (SMARTSYNC)

19

AUTO-TRACK SEQUENCING

20

UNDERVOLTAGE LOCKOUT (UVLO)

23

CURRENT SHARING

24

CURRENT SHARING SOA GRAPHS

26

CURRENT SHARING LAYOUT

27

PREBIAS START-UP

27

TAPE & REEL AND SHIPPING TRAY DRAWING

29

(Voltages are with respect to GND)

UNIT

Track pin voltage

V

–40 to 85

Surface temperature of module body or pins

Wave soldering temperature

AD suffix

260

(5 seconds maximum)

AS suffix

°C

Solder reflow temperature

Surface temperature of module body or pins

AZ suffix

Storage temperature

Storage temperature of module removed from shipping package

–55 to 125

Packaging temperature

Shipping Tray or Tape and Reel storage or bake temperature

45

Mechanical shock

Per Mil-STD-883D, Method 2002.3 1 msec, 1/2

AD suffix

500

sine, mounted

AS and AZ suffix

125

G

Mechanical vibration

Mil-STD-883D, Method 2007.2 20-2000 Hz

20

Weight

16.7

grams

Flammability

Meets UL94V-O

(1)

During reflow of surface mount package version do not elevate peak temperature of the module, pins or internal components above the

stated maximum.

Copyright © 2008, Texas Instruments Incorporated

3

Product Folder Link(s): PTH08T255W