TLV431BLPG Datasheet, PDF(3/15 Page) ON Semiconductor – Low Voltage Precision Adjustable Shunt Regulator

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TLV431BLPG Datasheet, PDF (3/15 Pages) ON Semiconductor – Low Voltage Precision Adjustable Shunt Regulator

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TLV431A, TLV431B, SCV431B

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

TLV431A

TLV431B

Characteristic

Symbol Min Typ Max Min Typ Max Unit

Reference Voltage (Figure 3)

(VKA = Vref, IK = 10 mA, TA = 25Â°C)

(TA = Tlow to Thigh, Note 1)

Vref

1.228 1.240 1.252 1.234 1.240 1.246

1.215 â 1.265 1.228 â 1.252

Reference Input Voltage Deviation Over Temperature (Figure 3)

(VKA = Vref, IK= 10 mA, TA = Tlow to Thigh, Note 1)

DVref

7.2 20

Ration of Reference Input Voltage Change to Cathode Voltage

Change (Figure 4)

(VKA = Vref to 16 V, IK= 10 mA)

Reference Terminal Current (Figure 4)

(IK = 10 mA, R1 = 10 kW, R2 = open)

DVref

DVKA

Iref

â â0.6 â1.5 â â0.6 â1.5 V

â 0.15 0.3

Reference Input Current Deviation Over Temperature (Figure 4)

(IK = 10 mA, R1 = 10 kW, R2 = open, Notes 1, 2)

DIref

â 0.04 0.08 â 0.04 0.08

Minimum Cathode Current for Regulation (Figure 3)

IK(min)

55 80

55 80 mA

OffâState Cathode Current (Figure 5)

(VKA = 6.0 V, Vref = 0)

(VKA = 16 V, Vref = 0)

IK(off)

â 0.01 0.04

â 0.012 0.05

â 0.01 0.04

â 0.012 0.05

Dynamic Impedance (Figure 3)

(VKA = Vref, IK =0.1 mA to 20 mA, f â¤ 1.0 kHz, Note 3)

|ZKA|

â 0.25 0.4

1. Ambient temperature range: Tlow = *40Â°C, Thigh = 85Â°C.

2. The deviation parameters DVref and DIref are defined as the difference between the maximum value and minimum value obtained over the

full operating ambient temperature range that applied.

Vref Max

DVref = Vref Max â Vref Min

Vref Min

DTA = T2 â T1

T1 Ambient Temperature T2

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

(DVref )

Ç Ç Î±Vref

ppm

Â°C

Vref (TA + 25Â°C)

DTA

Ç106

aVref can be positive or negative depending on whether Vref Min or Vref Max occurs at the lower ambient temperature, refer to Figure 8.

Example: DVref = 7.2 mV and the slope is positive,

Example: Vref @ 25Â°C = 1.241 V

Example: DTA = 125Â°C

Ç Ç 0.0072

Î±Vref

ppm

Â°C

1.241

125

106

+ 46 ppmÅÂ°C

3. The dynamic impedance ZKA is defined as:

âZKAâ

DVKA

DIK

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:

Ç Ç âZKAâ²â + âZKAâ

)

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