TS431/A/B

2-8

2003/12 rev. B

Absolute Maximum Rating

Cathode Voltage (Note 1)

Vka

37

V

Continuous Cathode Current Range

Ik

-100 ~ +150

mA

Reference Input Current Range

Iref

-0.05 ~ +10

mA

Power Dissipation (Note 2, 3)

TO-92

SOT-89 / SOP-8

SOT-23

Pd

0.625

0.5

0.3

W

Operating Junction Temperature Range

Tj

+125

Storage Temperature Range

-65 ~ +150

Note 1: Voltage values are with respect to the anode terminal unless otherwise noted.

Note 2: Tj Max = 150

Note 3: Rating apply to ambient temperature at 25

Recommend Operating Condition

Cathode Voltage Range

Vka

Ref ~ 36

V

Cathode Current Range (for regulation)

Ik

1 ~ 100

mA

Electrical Characteristics

(Ta=25

Parameter

Symbo

Test Conditions

Min

Typ

Max

Unit

TS431

TS431A

Reference

voltage

TS431B

Vref

Vka =Vref, Ik=10mA (Figure 1)

2.450

2.475

2.487

2.495

2.550

2.525

2.513

V

Deviation of reference input

voltage, over temp. (Note 4)

∆Vref

Ta = full range

Vka =Vref, Ik=10mA (Figure 1)

--

3

17

mV

Reference Input current

Iref

R1=10KΩ, R2=

(Figure 2)

--

0.7

4.0

uA

Radio of change in Vref to

change in cathode Voltage

∆Vref /

∆Vka

Ika=10mA, Vka = 10V to Vref,

Vka = 36V to 10V (Figure 2)

--

--

-1.4

- 1.0

-2.7

- 2.0

mV/V

Deviation of reference input

current, over temp.

Iref(DEV)

Ta= full range

R1=10KΩ, R2=

(Figure 2)

--

0.4

1.2

uA

Minimum operating cathode

current

Ika(min)

Vka=Vref (Figure 1)

--

0.4

0.6

mA

Off-state Cathode Current

Ioff

Vref=0V (Figure 3)

Vka=36V

--

--

1.0

uA

Dynamic Output Impedance

|Zka|

f<1KHz, Vka=Vref

Ika=1mA to 100mA (Figure 1)

--

0.22

0.5

Ω