TL431B Datasheet, PDF (17/40 Pages) Texas Instruments – ADJUSTABLE PRECISION SHUNT REGULATORS

TL431, TL431A, TL431B, TL432, TL432A, TL432B
ADJUSTABLE PRECISION SHUNT REGULATORS
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
TYPICAL CHARACTERISTICS^†
2600
2580
2560
REFERENCE VOLTAGE
vs
FREE-AIR TEMPERATURE
VKA = Vref
IKA = 10 mA
Vref = 2550 mV‡
2540
2520
2500
Vref = 2495 mV‡
2480
2460
2440
Vref = 2440 mV‡
2420
2400
−75 −50 −25 0 25 50 75 100 125
TA − Free-Air Temperature − °C
‡ _{Data is for devices having the indicated value of Vref at IKA = 10 mA,}
TA = 25°C.
Figure 5
REFERENCE CURRENT
vs
FREE-AIR TEMPERATURE
5
R1 = 10 kΩ
R2 = ∞
IKA = 10 mA
4
3
2
1
0
−75 −50 −25 0
25 50 75 100 125
TA − Free-Air Temperature − °C
Figure 6
CATHODE CURRENT
vs
CATHODE VOLTAGE
150
VKA = Vref
125 TA = 25°C
100
75
50
25
0
−25
−50
−75
−100
−2
−1
0
1
2
3
VKA − Cathode Voltage − V
Figure 7
CATHODE CURRENT
vs
CATHODE VOLTAGE
800
VKA = Vref
TA = 25°C
600
Imin
400
200
0
−200
−1
0
1
2
3
VKA − Cathode Voltage − V
Figure 8
† _{Data at high and low temperatures is applicable only within the recommended operating free-air temperature ranges of the various devices.}
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