NCV431A データシートの表示（PDF） - ON Semiconductor

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NCV431A

Programmable Precision References

ON Semiconductor 

TL431A, B Series, NCV431A, B Series, SCV431A

ELECTRICAL CHARACTERISTICS (TA = 25°C, unless otherwise noted.)

TL431AI /

NCV431AI/

SCV431AI

TL431AC

TL431BC / TL431BI /

TL431BV /

NCV431BV

Characteristic

Reference Input Voltage (Figure 1)

VKA = Vref, IK = 10 mA

TA = 25°C

TA = Tlow to Thigh (Note 6)

Symbol Min Typ Max Min Typ Max Min Typ Max Unit

Vref

V

2.47 2.495 2.52 2.47 2.495 2.52 2.485 2.495 2.505

2.44 − 2.55 2.453 − 2.537 2.475 2.495 2.515

Reference Input Voltage Deviation Over

DVref

−

7.0 30

−

3.0 17

−

3.0 17 mV

Temperature Range (Figure 1, Notes 7, 8)

VKA= Vref, IK = 10 mA

Ratio of Change in Reference Input Voltage to

Change in Cathode to Anode Voltage

IK = 10 mA (Figure 2),

DVref

DVKA

mV/V

DVKA = 10 V to Vref

− −1.4 −2.7 − −1.4 −2.7 − −1.4 −2.7

DVKA = 36 V to 10 V

− −1.0 −2.0 − −1.0 −2.0 − −1.0 −2.0

Reference Input Current (Figure 2)

IK = 10 mA, R1 = 10 k, R2 = ∞

TA = 25°C

TA = Tlow to Thigh (Note 6)

Iref

mA

−

1.8 4.0

−

1.8 4.0

−

1.1 2.0

−

− 6.5 −

−

5.2

−

− 4.0

Reference Input Current Deviation Over

Temperature Range (Figure 2, Note 7)

IK = 10 mA, R1 = 10 k, R2 = ∞

DIref

−

0.8 2.5

−

0.4 1.2

−

0.8 2.5 mA

Minimum Cathode Current For Regulation

VKA = Vref (Figure 1)

Imin

−

0.5 1.0

−

0.5 1.0

−

0.5 1.0 mA

Off−State Cathode Current (Figure 3)

VKA = 36 V, Vref = 0 V

Ioff

−

20 1000 −

20 1000 − 0.23 500 nA

Dynamic Impedance (Figure 1, Note 9)

VKA = Vref, DIK = 1.0 mA to 100 mA

f ≤ 1.0 kHz

|ZKA|

− 0.22 0.5 − 0.22 0.5

− 0.14 0.3 W

Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product

performance may not be indicated by the Electrical Characteristics if operated under different conditions.

6. Tlow = −40°C for TL431AIP TL431AILP, TL431IP, TL431ILP, TL431BID, TL431BIP, TL431BILP, TL431BV, TL431AIDM, TL431IDM,

TL431BIDM, NCV431AIDMR2G, NCV431AIDR2G, NCV431BVDR2G, SCV431AIDMR2G

= 0°C for TL431ACP, TL431ACLP, TL431CP, TL431CLP, TL431CD, TL431ACD, TL431BCD, TL431BCP, TL431BCLP, TL431CDM,

TL431ACDM, TL431BCDM, SCV431AIDMR2G

Thigh = +85°C for TL431AIP, TL431AILP, TL431IP, TL431ILP, TL431BID, TL431BIP, TL431BILP, TL431IDM, TL431AIDM, TL431BIDM

= +70°C for TL431ACP, TL431ACLP, TL431CP, TL431ACD, TL431BCD, TL431BCP, TL431BCLP, TL431CDM, TL431ACDM,

TL431BCDM

= +125°C TL431BV, NCV431AIDMR2G, NCV431AIDR2G, NCV431BVDMR2G, NCV431BVDR2G, SCV431AIDMR2G

7. Guaranteed by design.

8. The deviation parameter DVref is defined as the difference between the maximum and minimum values obtained over the full operating

ambient temperature range that applies.

Vref max

Vref min

DVref = Vref max

-Vref min

DTA = T2 - T1

T1 Ambient Temperature T2

The average temperature coefficient of the reference input voltage, aVref is defined as:

ǒ Ǔ ppm

Vref _C +

D Vref

Vref @ 25_C

D TA

X 106

+

D Vref x 106

D TA (Vref @ 25_C)

aVref can be positive or negative depending on whether Vref Min or Vref Max occurs at the lower ambient temperature. (Refer to Figure 6.)

Example : DVref + 8.0 mV and slope is positive,

Vref @ 25_C + 2.495 V, DTA + 70_C

0.008 x 106

a Vref + 70 (2.495) + 45.8 ppmń_C

9.

The

dynamic

impedance

ZKA

is

defined

as

|ZKA|

+

D VKA

D IK

When

the

device

is

programmed

with

two

external

resistors,

R1

and

R2,

(refer

ǒ Ǔ to Figure 2) the total dynamic impedance of the circuit is defined as: |ZKAȀ| [ |ZKA|

1

)

R1

R2

10. NCV431AIDMR2G, NCV431AIDR2G, NCV431BVDMR2G, NCV431BVDR2G, SCV431AIDMR2G Tlow = −40°C, Thigh = +125°C.

NCV prefix is for automotive and other applications requiring unique site and control change requirements.

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