TL431AIL3T Datasheet, PDF (5/21 Pages) STMicroelectronics – Programmable voltage reference

TL431, TL432
3
Electrical characteristics
Electrical characteristics
Table 3.
Symbol
TL431C (T_amb = 25° C unless otherwise specified)
Parameter
TL431C
TL431AC
Unit
Min. Typ. Max. Min. Typ. Max.
Reference input voltage
V_ref
V_KA = V_ref, I_k = 10 mA, T_amb = 25° C
T_min ≤ T_amb ≤ T_max
2.44 2.495 2.55 2.47 2.495 2.52 V
2.423
2.567 2.453
2.537
ΔV_ref
Reference input voltage deviation over temperature
range ⁽¹⁾
V_KA = V_ref, I_k = 10 mA, T_min ≤ T_amb ≤ T_max
3 17
mV
3 15
Ratio of change in reference input voltage to change
Δ_-Δ---VV_---r_-k-e_--a-f
in cathode to anode voltage
I_k = 10 mA - ΔV_KA = 10 V to V_ref
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_amb = 25° C
T_min ≤ T_amb ≤ T_max
1.8 4
5.2
µA
1.8 4
5.2
Reference input current deviation over temperature
range
ΔI_ref
I_k = 10 mA, R1 = 10 kΩ, R2 =∞
T_min ≤ T_amb ≤ T_max
0.4 1.2
µA
0.4 1.2
Minimum cathode current for regulation
I_min
V_KA = V_ref
0.5 1
mA
0.5 0.6
I_off
⏐ZKA⏐
Off-state cathode current
Dynamic impedance ⁽²⁾
V_KA = V_ref, Δ I_k = 1 to 100 mA, f ≤ 1 kHZ
2.6 1000
0.22 0.5
2.6 1000 nA
Ω
0.22 0.5
1. See definition of Section 3.1: Reference input voltage deviation over temperature range.
2. The dynamic impedance is defined as |ZKA| = ^Δ_-----V----^K_----^A_--
ΔI_k
Doc ID 4467 Rev 11
5/21