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TL431-Q1 View Datasheet(PDF) - Texas Instruments

Part NameDescriptionManufacturer
TL431-Q1 ADJUSTABLE PRECISION SHUNT REGULATOR TI
Texas Instruments TI
TL431-Q1 Datasheet PDF : 23 Pages
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TL431-Q1
ADJUSTABLE PRECISION SHUNT REGULATOR
SGLS302C − MARCH 2005 − REVISED APRIL 2008
electrical characteristics over recommended operating conditions, TA = 25°C (unless otherwise
noted)
Vref
VI(dev)
DVref
DVKA
Iref
II(dev)
Imin
Ioff
|zKA|
PARAMETER
TEST
CIRCUIT
TEST CONDITIONS
Reference voltage
Deviation of reference voltage
over full temperature range
(see Figure 1)
2
VKA = Vref, IKA = 10 mA
2
VKA = Vref, IKA = 10 mA,
TA = −40°C to 125°C
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 k, R2 =
Deviation of reference current
over full temperature range
(see Figure 1)
3
IKA = 10 mA, R1 = 10 k, R2 = ,
TA = −40°C to 125°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
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
electrical characteristics over recommended operating conditions, TA = 25°C (unless otherwise
noted)
Vref
VI(dev)
DVref
DVKA
Iref
II(dev)
Imin
Ioff
|zKA|
PARAMETER
TEST
CIRCUIT
TEST CONDITIONS
Reference voltage
Deviation of reference voltage
over full temperature range
(see Figure 1)
2
VKA = Vref, IKA = 10 mA
2
VKA = Vref, IKA = 10 mA,
TA = −40°C to 125°C
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 k, R2 =
Deviation of reference current
over full temperature range
(see Figure 1)
3
IKA = 10 mA, R1 = 10 k, R2 = ,
TA = −40°C to 125°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
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
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
3
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