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TLVH431 Datasheet(PDF) 5 Page - STMicroelectronics

Part # TLVH431
Description  Programmable shunt voltage reference
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TLVH431 Datasheet(HTML) 5 Page - STMicroelectronics

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DocID023303 Rev 5
5/15
TLVH431
Electrical characteristics
15
3
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
V
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
mV
ΔVKA/ΔT
Average temperature
coefficient
VKA = Vref, - 40 °C < Tamb < +125 °C
±30
±100
ppm/°C
Ikmin
Minimum cathode
current for regulation
VKA = Vref
60
100
µA
VKA = VKAmax
160
200
ΔIkmin
Minimum cathode
current variation over
temperature range
VKA = Vref, - 40 °C < Tamb < +125 °C
70
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
10
80
nA
ΔIoff
Off-state cathode current
over temperature range
VKA = VKAmax,Vref = GND
- 40 °C < T
amb < +125 °C
1000
2000
nA
⏐RKA⏐ Static impedance
VKA = Vref, ΔIK = 100 µA to 60 mA
0.14
0.62
W
⏐ZKA⏐ Dynamic impedance (2)
VKA = Vref, ΔIK = 10 mA to 60 mA, f ≤ 1 kHz
0.22
0.85
W
en
Wide band noise
IK = 10 mA; 10 Hz < f < 100 kHz
30
mVRMS
TON
Turn-on setting time
VKA = Vref, ΔIK = 10 mA
40
70
µsec
1.
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.
2.
The dynamic impedance is defined as
⏐ZKA⏐=ΔVKA/ΔIk.
ΔVref
ΔVka
------------


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