TL1431_08 Datasheet, PDF (5/16 Pages) Texas Instruments – PRECISION PROGRAMMABLE REFERENCE

TL1431
Electrical characteristics
Table 4.
Symbol
T_amb = 25°C (unless otherwise specified)
Parameter
TL1431I
TL1431AI
Unit
Min. Typ. Max. Min. Typ. Max.
V_ref
ΔV_ref
Δ_-----V_----r_--e_----f
ΔT
Δ_-Δ----VV_----rk_--e_--a--f
I_ref
ΔI_ref
I_min
I_off
⏐ Z_KA⏐
Reference input voltage - see Figure 4
V_KA = V_ref , I_k = 10 mA
2.490 2.500 2.510 2.493 2.500 2.507 V
Reference input voltage deviation over
temperature range ⁽¹⁾ - see Figure 4
V_KA = V_ref, I_k = 10 mA, T_min ≤ T_amb ≤ T_max
7 30
7 30 mV
Temperature coefficient of reference input
voltage⁽²⁾
V_KA = V_ref, I_k = 10 mA, T_min ≤ T_amb ≤ T_max
±22 ±100
±22 ±100 ppm/°C
Ratio of change in reference input voltage to
change in cathode to anode voltage - see
Figure 5
I_k = 10mA - ΔV_KA = 36V to 3V
-2 -1.1
-2 -1.1
mV/V
Reference input current
I_k = 10mA, R1 = 10kΩ, R2 = ∞
T_min ≤ T_amb ≤ T_max
1.5 2.5
3
1.5 2.5 ^µA
3
Reference input current deviation over
temperature range
I_k = 10mA, R1 = 10kΩ, R2 =∞, T_min ≤ T_amb ≤ T_max
0.5 1
0.8 1.2 µA
Minimum cathode current for regulation - see
Figure 4
V_KA = V_ref
0.5 1
0.5 0.7 mA
Off-state cathode current - see Figure 6
180 500
180 500 nA
Dynamic impedance ⁽³⁾
V_KA = V_ref , ΔI_k= 1 to100mA, f ≤ 1kHz
0.2 0.5
0.2 0.5
Ω
1. See Reference input voltage deviation over temperature range in Section 4: Parameter definitions on page 9.
2. See Temperature coefficient of reference input voltage in Section 4: Parameter definitions on page 9.
3. See Dynamic impedance in Section 4: Parameter definitions on page 9.
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