Datasheet

0.0 0.2 0.4 0.6 0.8 1.0
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
DIM PIN DUTY CYCLE
DEMODULATED VAC PIN DUTY CYCLE
V
ADJ
=3V
2V
1.5V
1V
0.5V
2.5V
V
FB
(V)
G
M
(Ps)
250
200
150
100
50
0
1.5 2.0 2.5 3.0 3.5
V
CMP
(V)
V
CS
(V)
4.90
3.92
2.94
1.96
0.98
0.00
1.0 1.8 2.6 3.4 4.2 5.0
V
AC
= 3V
V
AC
= 4V
V
AC
= 2V
V
AC
= 1V
V
AC
= 0.1V
V
AC
= 0.5V
LM3450
SNVS681D –NOVEMBER 2010–REVISED MAY 2013 www.ti.com
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
T
A
=+25°C and V
CC
= 14V unless otherwise specified
Transconductance vs. V
FB
Current Sense Threshold vs. V
COMP
and V
AC
Figure 14. Figure 15.
Decoder Mapping from V
AC
to DIM
Figure 16.
8 Submit Documentation Feedback Copyright © 2010–2013, Texas Instruments Incorporated
Product Folder Links: LM3450