TL431AIL3T Datasheet, PDF (7/21 Pages) STMicroelectronics – Programmable voltage reference

TL431, TL432
Electrical characteristics
Table 5.
Symbol
TL431IY (T_amb = 25°C unless otherwise specified)
Parameter
TL431IY
TL431AIY
Unit
Min. Typ. Max. Min. Typ. Max.
Reference input voltage
V_ref
V_KA = V_ref, I_k = 10 mA
T_min ≤ T_amb ≤ T_max
2.44 2.495 2.55 2.47 2.495 2.52 V
2.41
2.58 2.44
2.55
ΔV_ref
Reference input voltage deviation over temperature
range ⁽¹⁾
V_KA = V_ref, I_k = 10 mA, T_min≤ T_amb ≤ T_max
7 30
7 30 mV
Δ_----V_---r_--e_---f
ΔVka
Ratio of change in reference input voltage to change
in cathode to anode voltage
I_k = 10 mA, ΔV_KA = 10 V to V_ref
I_k = 10 mA, ΔV_KA = 36 V to 10 V
-2.7 -1.4
-2 -1
-2.7 -1.4
-2 -1
mV/V
Reference input current
I_ref I_k = 10 mA, R1 = 10 kΩ, R2 = ∞
T_min ≤ T_amb ≤ T_max
1.8 4
6.5
1.8 4 _µA
6.5
Reference input current deviation over temperature
range
ΔI_ref
I_k = 10 mA, R1 = 10 kΩ, R2 = ∞, T_min ≤ T_amb ≤
T_max
0.8 2.5
0.8 1.2 µA
Minimum cathode current for regulation
I_min
V_KA = V_ref
0.5 1
0.5 0.6 mA
I_off
⏐ZKA⏐
Off-state cathode current
T_min ≤ T_amb ≤ T_max
Dynamic impedance ⁽²⁾
V_KA = V_ref, Δ I_k = 1 to 100 mA, F ≤ 1 kHz
2.6 1000
3000
0.22 0.5
2.6 1000 _nA
3000
0.22 0.5 Ω
1. See definition of Section 3.1: Reference input voltage deviation over temperature range below.
2. The dynamic impedance is defined as |ZKA| = ^Δ_{----Δ-V---I-}^K_-k---^A_--
3.1
Reference input voltage deviation over temperature range
ΔV_ref is defined as the difference between the maximum and minimum values obtained over
the full temperature range.
ΔV_ref = V_{ref max} - V_{ref min}
Figure 6. Reference input voltage deviation over temperature range
Doc ID 4467 Rev 11
7/21