Datasheet
DATASHEET TABLE OF CONTENTS
ENVIRONMENTAL AND ABSOLUTE MAXIMUM RATINGS
PTH08T220W , PTH08T221W
www.ti.com
................................................................................................................................................... SLTS252K – NOVEMBER 2005 – REVISED JUNE 2009
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 (PTH08T220W) 4
ELECTRICAL CHARACTERISTICS TABLE (PTH08T221W) 6
TERMINAL FUNCTIONS 8
TYPICAL CHARACTERISTICS (V
I
= 12V) 9
TYPICAL CHARACTERISTICS (V
I
= 5V) 10
ADJUSTING THE OUTPUT VOLTAGE 11
INPUT & OUTPUT CAPACITOR RECOMMENDATIONS 13
TURBOTRANS™ INFORMATION 17
UNDERVOLTAGE LOCKOUT (UVLO) 22
SOFT-START POWER-UP 23
OUTPUT INHIBIT 24
OVER-CURRENT PROTECTION 25
OVER-TEMPERATURE PROTECTION 25
REMOTE SENSE 25
SYCHRONIZATION (SMARTSYNC) 26
AUTO-TRACK SEQUENCING 27
PREBIAS START-UP 30
TAPE & REEL AND TRAY DRAWINGS 32
(Voltages are with respect to GND)
UNIT
V
track
Track pin voltage – 0.3 to V
I
+ 0.3 V
T
A
Operating temperature range Over V
I
range – 40 to 85
AH suffix
Surface temperature of module body or pins for
T
wave
Wave soldering temperature 260
5 seconds maximum.
AD suffix
AS suffix 235
(1)
° C
T
reflow
Solder reflow temperature Surface temperature of module body or pins
AZ suffix 260
(1)
T
stg
Storage temperature Storage temperature of module removed from shipping package – 55 to 125
T
pkg
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 AH and AD suffix 500
sine, mounted
AS and AZ suffix 125 G
Mechanical vibration Mil-STD-883D, Method 2007.2 20-2000 Hz 20
Weight 5 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.
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