2

STC431

Absolute maximum ratings

(Operating ambient temperature range applies unless other specified)

Parameter

Symbol

Ratings

Unit

Cathode to anode voltage

37

V

Cathode current range(Continuous)

-100 ~+150

mA

Reference input current range(Continuous)

-0.05~+10

mA

Power dissipation

700

mW

Operating temperature range

-40~+85

°C

Storage temperature range

-65~+150

°C

Recommended operating conditions

Ratings

Parameter

Symbol

Min.

Max.

Unit

Cathode to Anode voltage

36

V

Cathode current range(Continuous)

1.0

100

mA

Electrical Characteristics

(Ambient temperature at 25

°C, unless otherwise noted.)

Parameter

Symbol

Condition

Min.

Typ.

Max.

Unit

Reference input voltage

(Fig. 1, Note 1)

2.47

2.495

2.52

V

Deviation of reference input voltage

Over temperature(Fig. 1, Note 1,2)

-

7.0

30

mV

Ratio of change in reference input

Voltage to the change in cathode

Voltage(Fig. 2)

-

-

1.2

0.7

2.7

2.0

mV/V

Reference input current(Fig. 2)

R1=10K

Ω, R2=∞

-

1.8

4.0

µA

Deviation of reference input voltage

over temperature(Fig. 2)

R1=10K

Ω, R2=∞

-

0.4

2.5

µA

Minimum cathode current for

Regulation(Fig. 1)

-

0.35

1.0

mA

Off-state cathode current(Fig. 3)

-

2.7

1000

nA

Dynamic impedance(Fig. 1, Note 3)

-

0.14

0.5

Ω

Fig. 1

Fig. 2

Fig. 3