TL431 Datasheet, PDF (6/12 Pages) Motorola, Inc – PROGRAMMABLE PRECISION REFERENCES

PRODUCT DATABOOK 1996/1997
TL431/TL431A/TL431B
PRECISION PROGRAMMABLE REFERENCES
PRODUCTION DATA SHEET
CHARACTERISTIC CURVES
FIGURE 5. — OFF-STATE CATHODE CURRENT
vs. FREE-AIR TEMPERATURE
2.5
V_KA = 36V
V_REF = 0
2
TL431/A
& TL431B
1.5
1
0.5
0
-50 -25
0
25
50
75 100 125
(T_A) Ambient Temperature - (°C)
FIGURE 6. — RATIO OF DELTA REFERENCE VOLTAGE TO DELTA
CATHODE VOLTAGE vs. FREE-AIR TEMPERATURE
-0.85
V_KA = 3V to 36V
-0.95
-1.05
-1.15
-1.25
-1.35
-1.45
-50
-25
0
25
50
75 100 125
(T_A) Ambient Temperature - (°C)
FIGURE 7. — EQUIVALENT INPUT NOISE VOLTAGE
vs. FREQUENCY
260
240
I_O = 10mA
T_A = 25°C
220
200
180
160
140
120
100
10
100
1k
10k
100k
(f) Frequency - (Hz)
6
Copyright © 1999
Rev. 1.3 9/99