TL431AM Datasheet, PDF (2/3 Pages) Estek Electronics Co. Ltd – Programmable Output Voltage to 40V CHIP

RECOMMENDED OPERATING CONDITIONS
Characteristic
Cathode Voltage
Cathode Current
Symbol
VKA
IK
Test Condition
TL431AM (chips)
Min
VREF
0.5
Typ Max
40
100
Unit
V
mA
ELECTRICAL CHARACTERISTICS
(Ta = 25^oC, VKA = VREF, IK = 10mA unless otherwise specified)
Characteristic
Reference Input Voltage
Deviation of Reference Input Voltage
Over Full Temperature Range
Ratio of Change in Reference Input
Voltage to the Change in Cathode
Voltage
Reference Input Current
Deviation of Reference Input Current
Over Full Temperature Range
Minimum Cathode Current for
Regulation
Off-State Cathode Current
Dynamic Impedance
Symbol
VREF
VREF(dev)
∆V REF
∆V KA
IREF
IREF(dev)
IK(min)
IK(off)
ZKA
Test Condition
VKA = VREF, IK = 10mA
Tmin ≤ Ta ≤ Tmax
∆VKA = 10V-VREF
∆VKA = 36V- 10V
R1 = 10KΩ, R2 = ∞
R1 = 10KΩ, R2 = ∞
VKA = 40 V, VREF = 0
IK = 1mA to 100 mA , f ≤ 1.0KHz
TEST CIRCUITS
Fig.1. Test Circuit for VKA = VREF
Fig.2. Test Circuit for VKA ≥ VREF
I NPUT
TL431
TL431
Min
Typ
Max
Unit
2.475 2.495 2.505
V
3
17
mV
-1.4
-2.7
mV/V
-1.0
-2.0
1.8
4
µA
0.4
1.2
µA
0.25
0.5
mA
0.26
0.9
µA
0.22
0.5
Ω
Fig.3. Test Circuit for Ioff
VKA
I K (OFF)
TBTL443321
VKA ≥ VRE
2