TL1431_05 Datasheet, PDF (6/13 Pages) STMicroelectronics – Programmable Voltage Reference

Electrical Characteristics
TL1431
Figure 3. Test circuit for V_KA = V_REF
Figure 4. Test circuit for V_KA = V_REF
Input
Input
R
Output
R
Output
I_K=10mA
R1
I_REF
I_K
V_KA
V_REF
V_KA
R2
V_REF
( ) V_KA = V_REF
1 + ^R-----1--
R2
+ R1 x I_REF
Figure 5. Test circuit for I_OFF
V_KA=36V
I_OFF
Figure 6. Test circuit for phase margin and
voltage gain
10µF
10µF
I_K=10mA
Input
V_REF
Figure 7. Block diagram of TL1431
Cathode
Vref
+
-
Vref
Anode
6/13
Figure 8. Test circuit for response time
1 mA
0 mA
I_K=1mA