
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 8 of 27
NXP Semiconductors TL431 family
Adjustable precision shunt regulator
9. Characteristics
Table 10. Chara cteristics
Tamb =25
C unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
Standard-Grade (2 %):
TL431CDBZR; TL431IDBZR; TL431QDBZR; TL431FD T; TL43 1MFDT; TL431SDT; TL431MSDT
Vref reference voltage VKA =V
ref; IK= 10 mA 2440 2495 2550 mV
Vref reference voltage variation VKA =V
ref; IK=10mA
TL431CDBZR Tamb =0Cto70C-616mV
TL431IDBZR Tamb =40 Cto85C - 14 34 mV
TL431QDBZR
TL431FDT
TL431MFDT
TL431SDT
TL431MSDT
Tamb =40 C to 125 C
Vref/VKA reference voltage variation
to cathode-anode voltage
variation ratio
IK=10mA
VKA =10VtoV
ref -1.4 2.7 mV/V
VKA =36Vto10V - 12mV/V
Iref reference current IK=10mA;
R1 = 10 k; R2 = open -24A
Iref reference current variation IK=10mA;
R1 = 10 k; R2 = open
TL431CDBZR Tamb =0Cto70C-0.41.2A
TL431IDBZR Tamb =40 Cto85C- 0.82.5A
TL431QDBZR
TL431FDT
TL431MFDT
TL431SDT
TL431MSDT
Tamb =40 C to 125 C
IK(min) minimum cathode current VKA =V
ref -0.41mA
Ioff off-state current VKA =36V; V
ref =0 - 0.1 1 A
ZKA dynamic cathode-anode
impedance IK=1mAto100mA;
VKA =V
ref; f < 1 kHz -0.20.5
A-Grade(1%):
TL431ACDBZR; TL431AIDBZR; TL431AQDBZR; TL431AFDT; TL431AMFDT; TL431ASDT; TL431AMSDT
Vref reference voltage VKA =V
ref; IK= 10 mA 2470 2495 2520 mV
Vref reference voltage variation VKA =V
ref; IK=10mA
TL431ACDBZR Tamb =0Cto70C-616mV
TL431AIDBZR Tamb =40 Cto85C - 14 34 mV
TL431AQDBZR
TL431AFDT
TL431AMFDT
TL431ASDT
TL431AMSDT
Tamb =40 C to 125 C
Vref/VKA reference voltage variation
to cathode-anode voltage
variation ratio
IK=10mA
VKA =10VtoV
ref -1.4 2.7 mV/V
VKA =36Vto10V - 12mV/V