Data Sheet
TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 5 — 01 September 2015 17 of 27
NXP Semiconductors
TL431 family
Adjustable precision shunt regulator
T
amb
=25C
(1) V
KA
=V
ref
V
KA
= 5 V: no oscillation
V
KA
= 10 V: no oscillation
V
KA
= 15 V: no oscillation
Fig 23. All types except TL431XFDT and TL431XSDT:
Cathode current as a function of load capacitance; typical values
V
KA
=V
ref
T
amb
=25C
V
KA
> 5 V: stable operation
T
amb
=25C
Fig 24. Test circuit (1) to Figure 23 Fig 25. Test circuit (2) to Figure 23
006aab588
40
60
20
80
100
I
K
(mA)
0
C
L
(nF)
1 10
4
10
3
10 10
2
Stable
Oscillation
Stable
(1) (1)
006aab589
GND
C
L
I
K
150 Ω
V
BATT
006aab590
GND
C
L
I
K
150 Ω
V
BATT
R2
R1 = 10 kΩ