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參數(shù)資料
| 型號(hào)： | TLV431ALPRE |
| 廠商： | MOTOROLA INC |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, PBCY3 |
| 封裝： | TO-92, 3 PIN |
| 文件頁(yè)數(shù)： | 6/12頁(yè) |
| 文件大小： | 134K |
| 代理商： | TLV431ALPRE |
TLV431A
http://onsemi.com
3
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted)
Characteristic
Symbol
Min
Typ
Max
Unit
Reference Voltage (Figure 1)
(VKA = Vref, IK = 10 mA, TA = 25°C)
(TA = Tlow to Thigh, Note 2)
Vref
1.228
1.215
1.240
—
1.252
1.265
V
Reference Input Voltage Deviation Over Temperature (Figure 1)
(VKA = Vref, IK = 10 mA, TA = Tlow to Thigh, Notes 2, 3)
DVref
—
7.2
20
mV
Ratio of Reference Input Voltage Change to Cathode Voltage Change (Figure 2)
(VKA = Vref to 16 V, IK = 10 mA)
DV
ref
DV
KA
—
*0.6
*1.5
mV
V
Reference Terminal Current (Figure 2)
(IK = 10 mA, R1 = 10 k, R2 = open)
Iref
—
0.15
0.3
A
Reference Input Current Deviation Over Temperature (Figure 2)
(IK = 10 mA, R1 = 10 k, R2 = Open, Notes 2, 3)
DIref
—
0.04
0.08
A
Minimum Cathode Current for Regulation (Figure 1)
IK(min)
—
55
80
A
Off–State Cathode Current (Figure 3)
(VKA = 6.0 V, Vref = 0)
(VKA = 14 V, Vref = 0)
(VKA = 16 V, Vref = 0)
IK(off)
—
0.01
0.02
1.6
0.04
—
2.8
A
Dynamic Impedance (Figure 1)
(VKA = Vref, IK = 0.1 mA to 20 mA, f ≤ 1.0 kHz, Note 4)
|ZKA|
—
0.25
0.4
NOTES:
(1) Maximum package power dissipation limits must not be exceeded.
P
D +
T
J(max) *
T
A
RqJA
(2) Ambient temperature range: Tlow = *40°C, Thigh = 85°C.
(3) 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
Vref Min
T1
T2
Ambient Temperature
DVref = Vref Max – Vref Min
DTA = T2 – T1
The average temperature coefficient of the reference input voltage,
ref is defined as:
αV
ref
ppm
°C +
(
DV
ref
)
V
ref
(T
A +
25
°C)
106
DT
A
αVref can be positive or negative depending on whether Vref Min or Vref Max occurs at the lower ambient temperature, refer to Figure 6.
Example:
DVref = 7.2 mV and the slope is positive,
Example: Vref @ 25°C = 1.241 V
Example:
DTA = 125°C
αV
ref
ppm
°C +
0.0072
1.241
125
+ 46 ppm °C
106
(4) The dynamic impedance ZKA is defined as:
Z
KA +
DV
KA
DI
K
When the device is operating with two external resistors, R1 and R2, (refer to Figure 2) the total dynamic impedance of the circuit is given by:
Z
KA′ + ZKA
1
) R1
R2
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