TL431 / TL431A / TL431B
®
Precision programmable References
TM
PRODUCTION DATA SHEET
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, these specifications apply over the operating ambient temperature for the TL431C/TL431AC/TL431BC with
0°C < TA < 70°C, and TL431I/TL431AI/TL431BI with -40°C < TA < 85°C
TL431/A/B
Parameter
Symbol
Test Conditions
Units
Min
2440
2470
2490
Typ
2495
2495
2500
4
5
4
5
4
5
Max
2550
2520
2510
17
30
17
30
15
TL431
IK = 10mA, VKA = VREF, TA = 25°C
IK = 10mA, VKA = VREF, TA = 25°C
IK = 10mA, VKA = VREF, TA = 25°C
IK = 10mA, VKA = VREF
IK = 10mA, VKA = VREF
IK = 10mA, VKA = VREF
IK = 10mA, VKA = VREF
IK = 10mA, VKA = VREF
IK = 10mA, VKA = VREF
Reference Input
VREF
mV
TL431A
TL431B
TL431C
TL431I
TL431AC
TL431AI
TL431BC
TL431BI
TL431,
TL431A
TL431B
TL431,
Voltage
ΔVREF
ΔVKA
Reference Drift
mV
20
IK = 10mA, VKA = 2.5V to 36V
IK = 10mA, VKA = 2.5V to 36V
-1.4
-1.1
2
-2.7
-2.0
4
Voltage Ratio, Ref to
Cathode (Note 4)
mV/V
V
KA = VREF, TA = 25°C
Reference Input
Current
TL431A
TL431B
IREF
IMIN
µA
VKA = VREF, TA = 25°C
VKA = VREF to 36V
VKA = VREF to 36V, TA= 25°C
VKA = VREF to 36V, TA= 25°C
VKA = VREF to 36V, TA= Operating Range
KA = 36V, VREF = 0V, TA= 25°C
KA = VREF, IK = 1mA to 100mA, f < 1kHz,
TA = 25°C
KA = VREF, IK = 1mA to 100mA, f < 1kHz,
TA = 25°C
1.5
0.4
0.1
0.1
1.9
1
1
1
2
Minimum Operating Current
TL431
mA
TL431A
Off-State Cathode
Current
IOFF
µA
TL431B
V
V
0.18
0.2
0.5
TL431
I ZKA
I
0.5
0.2
Dynamic Impedance
Ω
V
TL431B
0.1
Note 3: These parameters are guaranteed by design.
ΔVREF
Note 4:
Ratio of change in reference input voltage to the change in cathode voltage.
ΔVKA
Copyright © 1999
Rev. 1.4, 2006-09-26
Microsemi
Page 3
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
MICROSEMI [ Microsemi ]
