TL1431 Datasheet, PDF (4/8 Pages) STMicroelectronics – PROGRAMMABLE VOLTAGE REFERENCE

TL1431
Figure 1 : Test Circuit for VKA = Vref
Inp ut
I
K
V _{re f}
Figure 3 : Test Circuit for I_off
Figure 2 : Test Circuit for VKA > Vref
V _KA
Input
R₁
I _{re f}
R₂
V_KA
I_K
V_{re f}
VKA
=
Vref
(1
+
R₁
R₂
)
+
Iref
.
R1
Figure 4 : Test Circuit for Phase Margin and
Voltage Gain
Inp ut
V_KA = 36V
I _{o ff}
15K
10µF
Vka
Ik=10mA
10µF
Output
Iref
230
Input
8.25K
Vref
4/8