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TS431-Z Datasheet(PDF) 2 Page - Taiwan Semiconductor Company, Ltd

Part No. TS431-Z
Description  Adjustable Precision Shunt Regulator
Download  10 Pages
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Maker  TSC [Taiwan Semiconductor Company, Ltd]
Homepage  http://www.taiwansemi.com
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TS431-Z Datasheet(HTML) 2 Page - Taiwan Semiconductor Company, Ltd

 
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TS431-Z
Adjustable Precision Shunt Regulator
2/10
Version: C14
Electrical Characteristics (TA=25
oC, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Reference
voltage
TS431A
VREF
VKA =VREF, IK =10mA (Figure 1)
2.470
2.495
2.520
V
TS431B
2.483
2.507
Deviation of reference input
voltage
∆ VREF
VKA = VREF, IK =10mA (Figure 1)
TA=-20~85
oC
--
6
20
mV
Radio of change in Vref to
change in cathode Voltage
∆VREF
/∆VKA
IKA =10mA,
(Figure 2)
VKA = 10V to VREF
--
-1.2
-2.0
mV/V
VKA = 36V to 10V
--
-1.0
-2.0
Reference Input current
IREF
R1=10KΩ, R2=
, I
KA =10mA
(Figure 2)
--
1.5
3.5
µA
Deviation of reference input
current, over temp.
∆IREF
R1=10KΩ, R2=
, I
KA =10mA
TA=-20~85
oC (Figure 2)
--
0.4
1.2
µA
Off-state Cathode Current
IKA (off)
VREF =0V (Figure 3), VKA =36V
--
0.1
1.0
µA
Dynamic Output Impedance
| ZKA |
f<1KHz, VKA = VREF (Figure 1)
--
0.2
0.5
Minimum operating cathode
current
IKA (min)
VKA = VREF (Figure 1)
--
0.2
0.5
mA
* The deviation parameters ∆VREF and ∆IREF are defined as difference between the maximum value and minimum
value obtained over the full operating ambient temperature range that applied.
* The average temperature coefficient of the
reference input voltage,
αV
REF is defined as:
Where: T2-T1 = full temperature change.
α
VREF can be positive or negative depending on whether the slope is positive or negative.
Example: Maximum VREF=2.496V at 30
oC, minimum V
REF =2.492V at 0
oC, V
REF =2.495V at 25
oC, ∆T=70oC
α
VREF | = [4mV / 2495mV] * 10
6 / 70oC ≈ 23ppm/oC
Because minimum VREF occurs at the lower temperature, the coefficient is positive.
* The dynamic impedance ZKA is defined as:
| ZKA | = ∆VKA / ∆IKA
* When the device operating with two external resistors, R1 and R2, (refer to Figure 2) the total dynamic impedance
of the circuit is given by:
| ZKA | = ∆v / ∆i | ≈ ZKA | * ( 1 + R1 / R2)


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