TL431
CORPORATION
ELECTRICAL CHARACTERISTICS
Electrical Characteristics are guaranteed over full junction temperature range (0 to 105oC). Ambient temperature must be derated based on
power dissipation and package thermal characteristics. The conditions are: VKA = VREF and IK = 10mA unless otherwise stated.
SYMBOL
VREF
PARAMETER
Reference Voltage
MIN
TYP
MAX
2.520
2.541
0.20
UNIT
V
TEST CIRCUIT
TEST CONDITION
A = 25oC
Over Temp.
2.470
2.449
2.495
1
1
1
T
V
TC
∆VREF with Temp.*
0.07
–1.0
–0.4
0.7
mV/ oC
–2.7
–2
VREF to 10V
∆VREF
∆VK
Ratio of Change in VREF to
Cathode Voltage
mV/V
2
0.3
4
10V to 36V
IREF
Reference Input Current
IREF Temp Deviation
µA
µA
mA
nA
Ω
2
2
1
3
1
∆IREF
IK(MIN)
IK(OFF)
ZKA
0.4
1.2
1
Over Temp.
Min IK for Regulation
Off State Leakage
0.4
0.04
0.15
250
0.5
VREF = 0V, VKA = 36V
Dynamic Output Impedance
f ≤ 1kHz, IK = 1 to 150mA
*CALCULATING AVERAGE TEMPERATURE COEFFICIENT (TC)
%
∆VREF (mV)
• TC in mV/oC =
• TC in %/oC =
• TC in ppm/oC =
0
0
0
∆TA
∆VREF
∆T
∆VREF
VREF at 25oC
–10
x 100
5000
0.5
∆TA
0
15
30
45
60
75
90
105
∆VREF
VREF at 25oC
x 106
TEMPERATURE (˚C)
0.07 mV/˚C
0.003 %/˚C
27 ppm/˚C
∆TA
1G-37
TEST CIRCUITS
VIN
VKA
VIN
VKA
VIN
VKA= VREF
IK
IK(OFF)
IK
IREF
R1
(VREF
R2
IREF
)
1G-38
1G-39
1G-40
TEST CIRCUIT 1
TEST CIRCUIT 2
TEST CIRCUIT 3
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
CALOGIC [ CALOGIC, LLC ]
