TLV431A, TLV431B, TLV431C, SCV431B, NCV431

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3

Characteristic

Symbol

TLV431A

TLV431B

Unit

Min

Typ

Max

Min

Typ

Max

Reference Voltage (Figure 3)

1.228

1.215

1.240

−

1.252

1.265

1.234

1.228

1.240

−

1.246

1.252

V

Reference Input Voltage Deviation Over Temperature (Figure 3)

−

7.2

20

−

7.2

20

mV

Ration of Reference Input Voltage Change to Cathode Voltage

Change (Figure 4)

DV

ref

DV

KA

−

−0.6

−1.5

−

−0.6

−1.5

mV

V

Reference Terminal Current (Figure 4)

−

0.15

0.3

−

0.15

0.3

mA

Reference Input Current Deviation Over Temperature (Figure 4)

−

0.04

0.08

−

0.04

0.08

mA

Minimum Cathode Current for Regulation (Figure 3)

−

30

80

−

30

80

mA

Off−State Cathode Current (Figure 5)

−

−

0.01

0.012

0.04

0.05

−

−

0.01

0.012

0.04

0.05

mA

Dynamic Impedance (Figure 3)

−

0.25

0.4

−

0.25

0.4

W

2. Guaranteed but not tested.

3. The deviation parameters

full operating ambient temperature range that applied.

Ambient Temperature

The average temperature coefficient of the reference input voltage,

αV

ref

ppm

°C +

(

DV

ref

)

V

ref

(T

A +

25

°C)

DT

A

Example:

Example:

αV

ref

ppm

°C +

0.0072

1.241

125

+ 46 ppm °C

⏐Z

KA⏐ +

DV

KA

DI

K

When the device is operating with two external resistors, R1 and R2, (refer to Figure 4) the total dynamic impedance of the circuit is given by:

⏐ZKA′⏐ + ⏐ZKA⏐

1

) R1

R2