TL431Z Datasheet, PDF (3/14 Pages) List of Unclassifed Manufacturers – PROGRAMMABLE PRECISION SHUNT REGULATOR

TL431Z
ELECTRICAL CHARACTERISTICS
(T_a = 25^oC, V_KA = V_REF, I_K = 10mA unless otherwise specified)
Characteristic
Symbol
Test Condition
Min
Typ Max Unit
Reference Input Voltage
V_REF
V_KA = V_REF, I_K = 10mA
TL431Z (2%)
2.440
2.495
2.550
TL431Z-A (1%) 2.470 2.495 2.520 V
TL431Z-C (0.5%) 2.482 2.495 2.508
Deviation of Reference Input
Voltage Over Full
Temperature Range
V_REF(dev)
T_min ≤ Ta ≤ T_max
3
17 MV
Ratio of Change in
Reference Input Voltage to
the Change in Cathode
Voltage
∆V REF
∆V K A
∆V_KA = 10V-V_REF
∆V_KA = 36V- 10V
-1.4 -2.7
-1.0
-2.0 ^mV/V
Reference Input Current
Deviation of Reference Input
Current Over Full
Temperature Range
I_REF
I_REF(dev)
R₁ = 10KΩ, R₂ = ∞
R₁ = 10KΩ, R₂ = ∞
1.8
4
㎂
0.4
1.2
㎂
Minimum Cathode Current
for Regulation
I_K(min)
0.25
0.5
mA
Off-State Cathode Current
I_K(off)
V_KA = 40 V, V_REF = 0
0.17
0.9
㎂
Dynamic Impedance
Z_KA I_K = 10mA to 100 mA , f ≤
1.0KHz
0.27
0.5
Ω
Note :
1. The deviation parameter ∆Vref is defined as the difference between the maximum and minimum values obtained over
the full operating ambient temperature range that applies
The average temperature coefficient of the reference input voltage, aVref is defined as:
αVref can be positive or negative depending on whether Vref Min or Vref Max occurs at the lower ambient temperature.
(Refer to Figure 6.)
2. The dynamic impedance ZKA is defined as
When the device is programmed with two external resistors, R1 and R2, (refer to Figure 2) the total dynamic impedance
of the circuit is defined as:
Rev. 01