Datasheet

TL431−Q1
ADJUSTABLE PRECISION SHUNT REGULATOR
SGLS302D − MARCH 2005 − REVISED MARCH 2013
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
{
Figure 9
1.5
1
0.5
0
−75 −25 0 50
− Off-State Cathode Current −
2
OFF-STATE CATHODE CURRENT
vs
FREE-AIR TEMPERATURE
2.5
100 125−50 25 75
I
off Aμ
T
A
− Free-Air Temperature − °C
V
KA
= 36 V
V
ref
= 0
Figure 10
−1.15
−1.25
−1.35
−1.45
−1.05
− 0.95
RATIO OF DELTA REFERENCE VOLTAGE TO
DELTA CATHODE VOLTAGE
vs
FREE-AIR TEMPERATURE
− 0.85
T
A
− Free-Air Temperature − °C
−75 −25 0 50 100 125−50 25 75
V
KA
= 3 V to 36 V
− mV/V
ΔV
ref
ΔV
KA
/
180
140
120
100
10 100 1 k
220
240
f − Frequency − Hz
EQUIVALENT INPUT NOISE VOLTAGE
vs
FREQUENCY
260
10 k 100 k
200
160
− Equivalent Input Noise Voltage − nV/ HzV
n
I
O
= 10 mA
T
A
= 25°C
Figure 11
†
Data at high and low temperatures is applicable only within the recommended operating free-air temperature ranges of the various devices.