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参数资料
| 型号： | TS431ACTA3 |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 2.495 V, PBCY3 |
| 封装： | HALOGEN FREE AND ROHSCOMPLIANT, TO-92, 3 PIN |
| 文件页数： | 6/13页 |
| 文件大小： | 0K |
| 代理商： | TS431ACTA3 |
TS431
Adjustable Precision Shunt Regulator
2/13
Version: F07
Recommend Operating Condition
Parameter
Symbol
Limit
Unit
Cathode Voltage (Note 1)
VKA
Ref ~ 36
V
Continuous Cathode Current Range
IK
1 ~ 100
mA
Recommend Operating Condition
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
TS431
2.446
2.550
TS431A
2.470
2.520
Reference voltage
TS431B
VREF
VKA =VREF, IK =10mA (Figure 1)
Ta=25
oC
2.483
2.495
2.507
V
Deviation of reference input
voltage
VREF
VKA = VREF, IK =10mA (Figure 1)
Ta= full range
--
3
17
mV
Radio of change in Vref to
change in cathode Voltage
VREF
/VKA
IKA =10mA, VKA = 10V to VREF
VKA = 36V to 10V (Figure 2)
--
-1.4
-1.0
-2.7
-2.0
mV/V
Reference Input current
IREF
R1=10KΩ, R2= ∞ , IKA =10mA
Ta= full range (Figure 2)
--
0.7
4.0
uA
Deviation of reference input
current, over temp.
IREF
R1=10KΩ, R2= ∞ , IKA =10mA
Ta= full range (Figure 2)
--
0.4
1.2
uA
VREF =0V (Figure 3), VKA =36V
--
1.0
uA
Off-state Cathode Current
IKA (off)
VREF =0V (Figure 3), VKA =36V
TJ=-25C~125C
(Value is defined by design)
--
30
uA
Dynamic Output Impedance
| ZKA |
f<1KHz, VKA = VREF
IKA =1mA to 100mA (Figure 1)
--
0.22
0.5
Ω
Minimum operating cathode
current
IKA (min)
VKA = VREF (Figure 1)
--
0.4
0.6
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, αVREF is defined as:
Where: T2-T1 = full temperature change.
αVREF can be positive or negative depending on whether the slope is positive or negative.
Example: Maximum VREF=2.496V at 30
oC, minimum VREF =2.492V at 0oC, VREF =2.495V at 25oC, ΔT=70oC
αVREF | = [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 | = ΔVKA / ΔIKA
* 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 | = Δv / Δi | ≈ ZKA | * ( 1 + R1 / R2)
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