TLVH431 datasheet(5/15 Pages) STMICROELECTRONICS

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TLVH431

Electrical characteristics

Ik = 10 mA, Tamb = 25 °C (unless otherwise specified).

Note:

Limits are 100% production tested at 25 °C. Limits over the temperature range are

guaranteed through correlation and by design.

Table 5. Electrical characteristics for TLVH431

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

Vref

Reference voltage

VKA = Vref

TLVH431A 0.5%

TLVH431B 0.25%

TLVH431M 1%

TLVH431L 1.5%

1.234

1.237

1.227

1.222

1.24

1.246

1.243

1.253

1.258

ΔVref

Reference voltage

variation over

temperature range (1)

- 40 °C < T

amb < +125 °C

TLVH431A 0.5%

TLVH431B 0.25%

TLVH431M 1%

TLVH431L 1.5%

-26.7

-23.5

-32.8

-39

+26.7

+23.5

+32.8

+39

ΔVKA/ΔT

Average temperature

coefficient

VKA = Vref, - 40 °C < Tamb < +125 °C

±30

±100

ppm/°C

Ikmin

Minimum cathode

current for regulation

VKA = Vref

100

µA

VKA = VKAmax

160

200

ΔIkmin

Minimum cathode

current variation over

temperature range

VKA = Vref, - 40 °C < Tamb < +125 °C

100

µA

VKA = VKAmax, - 40 °C < Tamb < +125°C

100

200

Iref

Reference input current

R1 = 10 kΩ, R2 = ∞

1.5

2.5

µA

ΔIref

Reference current

variation over

temperature range

R1 = 10 kΩ, R2 = ∞

- 40 °C < T

amb < + 125 °C

2.5

3.5

µA

Ratio of change in

reference input voltage

to change in cathode to

anode voltage

ΔVKA = 18 V to Vref

-2

mV/V

ΔVKA = 18 V to Vref, - 40 °C < T

amb < +125 °C

-2.5

Ioff

Off-state cathode current VKA = VKAmax,Vref = GND

ΔIoff

Off-state cathode current

over temperature range

VKA = VKAmax,Vref = GND

- 40 °C < T

amb < +125 °C

1000

2000

⏐RKA⏐ Static impedance

VKA = Vref, ΔIK = 100 µA to 60 mA

0.14

0.62

⏐ZKA⏐ Dynamic impedance (2)

VKA = Vref, ΔIK = 10 mA to 60 mA, f ≤ 1 kHz

0.22

0.85

Wide band noise

IK = 10 mA; 10 Hz < f < 100 kHz

mVRMS

TON

Turn-on setting time

VKA = Vref, ΔIK = 10 mA

µsec

The tolerance values, across the temperature range, are calculated as: ±Vk25°C x {tolerance25°C+[(ppmmax /°C) x (ΔT)]}.

Example: TLVH431A

ΔVk = ±1.24 x (0.5% + 100 ppm/°C x 165 °C) = ±1.24 x (0.5%+1.65%)= ±1.24 x 2.15% = ± 26.7 mV.

The dynamic impedance is defined as

⏐ZKA⏐=ΔVKA/ΔIk.

ΔVref

ΔVka

------------

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