Datasheet

+
GND
SENSE
REF
CT
RESET
8
7
2
1
3
5
6
4
U1
U2
U3
+
UVLOProg
Inhibit/
GND
UVLOProg
Inhibit/
GND
AutoTrack TurboTrans
TurboTrans
R
TT
2
R
TT
1
AutoTrack
Smart
Sync
+Sense
V
O
−Sense
V
O
Adj
V
I
PTH08T210W
V
O
1=3.3V
C 1
O
C
O
2
R
SET1
1.62kW
V
I
=12V
V
CC
RESET
RESIN
TL7712A
R
RST
10kW
C
T
2.2 Fm
C
REF
0.1 Fm
C 1
I
+Sense
V
O
−Sense
V
O
Adj
V
I
C 2
I
V
O
2=1.8V
R
SET
2
4.75kW
PTH08T220W
t − Time − 20ms/div
V
TRK
(1V/div)
V
O
1(1V/div)
V
O
2(1V/div)
t − Time − 400 s/divm
V
TRK
(1V/div)
V
O
1(1V/div)
V
O
2(1V/div)
PTH08T220W , PTH08T221W
www.ti.com ................................................................................................................................................... SLTS252K – NOVEMBER 2005 – REVISED JUNE 2009
Figure 29. Sequenced Power Up and Power Down Using Auto-Track
Figure 30. Simultaneous Power Up Figure 31. Simultaneous Power Down
With Auto-Track Control With Auto-Track Control
Copyright © 2005 – 2009, Texas Instruments Incorporated Submit Documentation Feedback 29
Product Folder Link(s): PTH08T220W PTH08T221W