Datasheet

TL431−Q1
ADJUSTABLE PRECISION SHUNT REGULATOR
SGLS302D − MARCH 2005 − REVISED MARCH 2013
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
{
‡
Data is for devices having the indicated value of V
ref
at I
KA
= 10 mA,
T
A
= 25°C.
Figure 5
2500
2480
2420
2400
−75 −50 −25 0 25 50 75
2540
2580
REFERENCE VOLTAGE
vs
FREE-AIR TEMPERATURE
2600
100 125
2460
2560
2520
2440
T
A
− Free-Air Temperature − °C
V
ref
= 2495 mV
‡
V
ref
= 2440 mV
‡
V
KA
= V
ref
I
KA
= 10 mA
V
ref
= 2550 mV
‡
− Reference Voltage − mV
V
ref
3
2
1
0
−75 −25 0 50
4
REFERENCE CURRENT
vs
FREE-AIR TEMPERATURE
5
100 125−50 25 75
T
A
− Free-Air Temperature − °C
R1 = 10 kΩ
R2 = ∞
I
KA
= 10 mA
− Reference Current −ref
I
Aμ
Figure 6
Figure 7
25
0
−50
−75
−100
125
−25
−2 −10 1
75
50
100
CATHODE CURRENT
vs
CATHODE VOLTAGE
150
23
V
KA
− Cathode Voltage − V
V
KA
= V
ref
T
A
= 25°C
− Cathode Current − mAI
KA
Figure 8
400
200
0
−200
−10 1
600
CATHODE CURRENT
vs
CATHODE VOLTAGE
800
23
V
KA
= V
ref
T
A
= 25°C
V
KA
− Cathode Voltage − V
I
min
− Cathode Current − I
KA
Aμ
†
Data at high and low temperatures is applicable only within the recommended operating free-air temperature ranges of the various devices.