TL431B Datasheet, PDF (18/40 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^†
OFF-STATE CATHODE CURRENT
vs
FREE-AIR TEMPERATURE
2.5
VKA = 36 V
Vref = 0
2
RATIO OF DELTA REFERENCE VOLTAGE TO
DELTA CATHODE VOLTAGE
vs
FREE-AIR TEMPERATURE
− 0.85
VKA = 3 V to 36 V
− 0.95
−1.05
1.5
−1.15
1
−1.25
0.5
−1.35
0
−75 −50 −25 0
25 50 75 100 125
TA − Free-Air Temperature − °C
Figure 9
−1.45
−75 −50 −25 0
25 50
75 100 125
TA − Free-Air Temperature − °C
Figure 10
EQUIVALENT INPUT NOISE VOLTAGE
vs
FREQUENCY
260
IO = 10 mA
240 TA = 25°C
220
200
180
160
140
120
100
10
100
1k
10 k
f − Frequency − Hz
Figure 11
100 k
† _{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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