TL431B Datasheet, PDF (12/40 Pages) Texas Instruments – ADJUSTABLE PRECISION SHUNT REGULATORS

TL431, TL431A, TL431B, TL432, TL432A, TL432B
ADJUSTABLE PRECISION SHUNT REGULATORS
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
electrical characteristics over recommended operating conditions, T_A = 25°C (unless otherwise
noted)
Vref
VI(dev)
DV_ref
DV_KA
Iref
II(dev)
Imin
Ioff
|zKA|
PARAMETER
TEST
CIRCUIT
TEST CONDITIONS
Reference voltage
2
VKA = Vref,
IKA = 10 mA
Deviation of reference voltage
over full temperature range
(see Figure 1)
2
VKA = Vref,
IKA = 10 mA,
SOT23-3, SC-70,
and TL432 devices
TA = 0°C to 70°C _{All other devices}
Ratio of change in reference voltage
to the change in cathode voltage
3
IKA = 10 mA
∆VKA = 10 V − Vref
∆VKA = 36 V − 10 V
Reference current
3
IKA = 10 mA, R1 = 10 kΩ, R2 = ∞
Deviation of reference current
over full temperature range
(see Figure 1)
3
IKA = 10 mA, R1 = 10 kΩ, R2 = ∞,
TA = 0°C to 70°C
Minimum cathode current
for regulation
2
VKA = Vref
Off-state cathode current
Dynamic impedance (see Figure 1)
4
VKA = 36 V,
Vref = 0
1
IKA = 1 mA to 100 mA, VKA = Vref,
f ≤ 1 kHz
TL431AC, TL432AC
MIN TYP MAX
2470 2495 2520
UNIT
mV
6
16
mV
4
25
−1.4 −2.7 _mV
−1
−2 V
2
4 µA
0.8 1.2 µA
0.4 0.6 mA
0.1 0.5 µA
0.2 0.5 Ω
electrical characteristics over recommended operating conditions, T_A = 25°C (unless otherwise
noted)
Vref
VI(dev)
DV_ref
DV_KA
Iref
II(dev)
Imin
Ioff
|zKA|
PARAMETER
TEST
CIRCUIT
TEST CONDITIONS
Reference voltage
Deviation of reference voltage
over full temperature range
(see Figure 1)
Ratio of change in reference voltage
to the change in cathode voltage
Reference current
Deviation of reference current
over full temperature range
(see Figure 1)
2
VKA = Vref,
IKA = 10 mA
VKA = Vref,
2
IKA = 10 mA,
SOT23-3, SC-70,
and TL432 devices
TA = −40°C to 85°C _{All other packages}
3
IKA = 10 mA
∆VKA = 10 V − Vref
∆VKA = 36 V − 10 V
3
IKA = 10 mA, R1 = 10 kΩ, R2 = ∞
3
IKA = 10 mA, R1 = 10 kΩ, R2 = ∞,
TA = −40°C to 85°C
Minimum cathode current
for regulation
2
VKA = Vref
Off-state cathode current
Dynamic impedance (see Figure 1)
4
VKA = 36 V,
Vref = 0
2
IKA = 1 mA to 100 mA, VKA = Vref,
f ≤ 1 kHz
TL431AI, TL432AI
MIN TYP MAX
2470 2495 2520
14
34
5
50
−1.4 −2.7
−1
−2
2
4
0.8 2.5
0.4 0.7
0.1 0.5
0.2 0.5
UNIT
mV
mV
mV
V
µA
µA
mA
µA
Ω
12
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