TL431, A, B Series, NCV431A, B

http://onsemi.com

3

Characteristic

Symbol

TL431I

TL431C

Unit

Min

Typ

Max

Min

Typ

Max

Reference Input Voltage (Figure 1)

2.44

2.41

2.495

−

2.55

2.58

2.44

2.423

2.495

−

2.55

2.567

V

Reference Input Voltage Deviation Over

Temperature Range (Figure 1, Notes 1, 2)

−

7.0

30

−

3.0

17

mV

Ratio of Change in Reference Input Voltage to Change

in Cathode to Anode Voltage

DV

ref

DV

KA

−

−

−1.4

−1.0

−2.7

−2.0

−

−

−1.4

−1.0

−2.7

−2.0

mV/V

Reference Input Current (Figure 2)

−

−

1.8

−

4.0

6.5

−

−

1.8

−

4.0

5.2

mA

Reference Input Current Deviation Over

Temperature Range (Figure 2, Note 1, 4)

−

0.8

2.5

−

0.4

1.2

mA

Minimum Cathode Current For Regulation

−

0.5

1.0

−

0.5

1.0

mA

Off−State Cathode Current (Figure 3)

−

20

1000

−

20

1000

nA

Dynamic Impedance (Figure 1, Note 3)

f

≤ 1.0 kHz

−

0.22

0.5

−

0.22

0.5

W

= −40

°C for TL431AIP TL431AILP, TL431IP, TL431ILP, TL431BID, TL431BIP, TL431BILP, TL431AIDM, TL431IDM, TL431BIDM;

=0

°C for TL431ACP, TL431ACLP, TL431CP, TL431CLP, TL431CD, TL431ACD, TL431BCD, TL431BCP, TL431BCLP, TL431CDM,

TL431ACDM, TL431BCDM

= +70

°C for TL431ACP, TL431ACLP, TL431CP, TL431ACD, TL431BCD, TL431BCP, TL431BCLP, TL431CDM, TL431ACDM,

TL431BCDM

2. The deviation parameter

ambient temperature range that applies.

T2

Ambient Temperature

T1

The average temperature coefficient of the reference input voltage,

V

ref

ppm

_C

+

D V

ref

V

ref

@25

_C

X106

D T

A

+

D V

ref

x106

D T

A

(V

ref

@25

_C)

Example :

DV

ref +

8.0 mV and slope is positive,

V

ref

@25

_C + 2.495 V, DT

A +

70

_C

a V

ref +

0.008 x 106

70 (2.495)

+ 45.8 ppm _C

D V

KA

D I

K

. When the device is programmed with two external resistors, R1 and R2,

KA

|

[ |Z

KA

|

1

) R1

R2