NXP Semiconductors
TL431 family
Adjustable precision shunt regulator
100
IK
(mA)
80
60
40
(1)
(1)
Stable
Oscillation
Stable
006aab588
20
0
1
10
102
103
104
CL (nF)
Tamb = 25 C
(1) VKA = Vref
VKA = 5 V: no oscillation
VKA = 10 V: no oscillation
VKA = 15 V: no oscillation
Fig 23. All types except TL431XFDT and TL431XSDT:
Cathode current as a function of load capacitance; typical values
150 Ω
IK
CL
VBATT
R1 = 10 kΩ
IK
CL
R2
150 Ω
VBATT
GND
006aab589
VKA = Vref
Tamb = 25 C
Fig 24. Test circuit (1) to Figure 23
GND
006aab590
VKA > 5 V: stable operation
Tamb = 25 C
Fig 25. Test circuit (2) to Figure 23
TL431 family
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 5 — 01 September 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
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