TL431-Q1 Datasheet, PDF (3/26 Pages) Texas Instruments – ADJUSTABLE PRECISION SHUNT REGULATOR

TL431−Q1
ADJUSTABLE PRECISION SHUNT REGULATOR
SGLS302D − MARCH 2005 − REVISED MARCH 2013
electrical characteristics over recommended operating conditions, T_A = 25°C (unless otherwise
noted)
V_ref
V_I(dev)
DV_ref
DV_KA
I_ref
I_I(dev)
I_min
I_off
|z_KA|
PARAMETER
TEST
CIRCUIT
TEST CONDITIONS
Reference voltage
Deviation of reference voltage
over full temperature range
(see Figure 1)
2
V_KA = V_ref, I_KA = 10 mA
2
V_KA = V_ref, I_KA = 10 mA,
T_A = −40°C to 125°C
Ratio of change in reference voltage
to the change in cathode voltage
3
I_KA = 10 mA
ΔV_KA = 10 V − V_ref
ΔV_KA = 36 V − 10 V
Reference current
3
I_KA = 10 mA, R1 = 10 kΩ, R2 = ∞
Deviation of reference current
over full temperature range
(see Figure 1)
3
I_KA = 10 mA, R1 = 10 kΩ, R2 = ∞,
T_A = −40°C to 125°C
Minimum cathode current for
regulation
2
V_KA = V_ref
Off-state cathode current
Dynamic impedance (see Figure 1)
4
V_KA = 36 V, V_ref = 0
2
I_KA = 1 mA to 100 mA, V_KA = V_ref,
f ≤ 1 kHz
TL431Q
MIN TYP MAX
2440 2495 2550
UNIT
mV
14
34 mV
−1.4 −2.7 _mV
−1
−2 V
2
4 μA
0.8 2.5 μA
0.4
1 mA
0.1
1 μA
0.2 0.5 Ω
electrical characteristics over recommended operating conditions, T_A = 25°C (unless otherwise
noted)
V_ref
V_I(dev)
DV_ref
DV_KA
I_ref
I_I(dev)
I_min
I_off
|z_KA|
PARAMETER
TEST
CIRCUIT
TEST CONDITIONS
Reference voltage
Deviation of reference voltage
over full temperature range
(see Figure 1)
2
V_KA = V_ref, I_KA = 10 mA
2
V_KA = V_ref, I_KA = 10 mA,
T_A = −40°C to 125°C
Ratio of change in reference voltage
to the change in cathode voltage
3
I_KA = 10 mA
ΔV_KA = 10 V − V_ref
ΔV_KA = 36 V − 10 V
Reference current
3
I_KA = 10 mA, R1 = 10 kΩ, R2 = ∞
Deviation of reference current
over full temperature range
(see Figure 1)
3
I_KA = 10 mA, R1 = 10 kΩ, R2 = ∞,
T_A = −40°C to 125°C
Minimum cathode current
for regulation
2
V_KA = V_ref
Off-state cathode current
Dynamic impedance (see Figure 1)
4
V_KA = 36 V, V_ref = 0
2
I_KA = 1 mA to 100 mA, V_KA = V_ref,
f ≤ 1 kHz
TL431AQ
MIN TYP MAX
2470 2495 2520
UNIT
mV
14
34 mV
−1.4 −2.7 _mV
−1
−2 V
2
4 μA
0.8 2.5 μA
0.4 0.7 mA
0.1 0.5 μA
0.2 0.5 Ω
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