Datasheet

Electrical Characteristics TL431
6/13
Figure 3. Test circuit for V
KA
= V
REF
Figure 4. Test circuit for V
KA
= V
REF
Figure 5. Test circuit for I
OFF
Figure 6. Test circuit for phase margin and
voltage gain
Figure 7. Block diagram of TL1431 Figure 8. Test circuit for response time
Input
V
KA
V
REF
I
K
=10mA
Output
R
V
KA
= V
REF
+ R1 x I
REF
1
R1
R2
--------+()
Input
V
KA
V
REF
I
K
R1
R2
I
REF
R
Output
V
KA
=36V
I
OFF
Input
V
REF
I
K
=10mA
Output
10µF
10µF
15kΩ 8.25kΩ
Vref
Cathode
Anode
+
-
Vref
Vref
Cathode
Anode
+
-
Vref
I
K
=1mA
Output
0 mA
1 mA