參數(shù)資料
型號： NCV431AIDR2
廠商： ON SEMICONDUCTOR
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： PROGRAMMABLE PRECISION REFERENCES
中文描述： 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.495 V, PDSO8
封裝： PLASTIC, SOIC-8
文件頁數(shù)： 3/18頁
文件大小： 173K
代理商： NCV431AIDR2
TL431, A, B Series, NCV431A
http://onsemi.com
3
ELECTRICAL CHARACTERISTICS
(T
A
= 25
°
C, unless otherwise noted.)
TL431I
TL431C
Characteristic
Symbol
V
ref
Min
Typ
Max
Min
Typ
Max
Unit
V
Reference Input Voltage (Figure 1)
V
KA
= V
, I
K
= 10 mA
T
A
= 25
°
C
T
A
= T
low
to T
high
(Note 1)
2.44
2.41
2.495
2.55
2.58
2.44
2.423
2.495
2.55
2.567
High Logic Level Supply Current from V
CC
Reference Input Voltage Deviation Over
Temperature Range (Figure 1, Notes 1, 2)
V
KA
= V
ref,
I
K
= 10 mA
Ratio of Change in Reference Input Voltage to Change
in Cathode to Anode Voltage
I
K
= 10 mA (Figure 2),
V
KA
= 10 V to V
ref
V
KA
= 36 V to 10 V
I
CCH
V
ref
60
45
60
mA
mA
mA
7.0
30
3.0
17
mV
Vref
VKA
1.4
1.0
2.7
2.0
1.4
1.0
2.7
2.0
mV/V
Reference Input Current (Figure 2)
I
K
= 10 mA, R1 = 10 k, R2 =
∞
T
A
= 25
°
C
T
A
= T
low
to T
high
(Note 1)
Reference Input Current Deviation Over
Temperature Range (Figure 2, Note 1, 4)
I
K
= 10 mA, R1 = 10 k, R2 =
∞
Minimum Cathode Current For Regulation
V
KA
= V
ref
(Figure 1)
I
ref
1.8
4.0
6.5
1.8
4.0
5.2
A
I
ref
0.8
2.5
0.4
1.2
A
I
min
0.5
1.0
0.5
1.0
mA
OffState Cathode Current (Figure 3)
V
KA
= 36 V, V
ref
= 0 V
I
off
20
1000
20
1000
nA
Dynamic Impedance (Figure 1, Note 3)
V
KA
= V
ref
, I
K
= 1.0 mA to 100 mA
f
≤
1.0 kHz
|Z
KA
|
0.22
0.5
0.22
0.5
1. T
low
=
=
40
°
C for TL431AIP TL431AILP, TL431IP, TL431ILP, TL431BID, TL431BIP, TL431BILP, TL431AIDM, TL431IDM, TL431BIDM;
0
°
C for TL431ACP, TL431ACLP, TL431CP, TL431CLP, TL431CD, TL431ACD, TL431BCD, TL431BCP, TL431BCLP, TL431CDM,
TL431ACDM, TL431BCDM
+85
°
C for TL431AIP, TL431AILP, TL431IP, TL431ILP, TL431BID, TL431BIP, TL431BILP, TL431IDM, TL431AIDM, TL431BIDM
+70
°
C for TL431ACP, TL431ACLP, TL431CP, TL431ACD, TL431BCD, TL431BCP, TL431BCLP, TL431CDM, TL431ACDM,
TL431BCDM
2. The deviation parameter V
is defined as the difference between the maximum and minimum values obtained over the full operating
ambient temperature range that applies.
T
high
=
=
D
V
ref
= V
ref
max
V
ref
min
T
A
= T
2
T
1
T2
Ambient Temperature
T1
V
ref
min
V
ref
max
The average temperature coefficient of the reference input voltage, V
ref
is defined as:
Vref
ppm
C
Vref
Vref@ 25 C
X 106
TA
Vrefx 106
TA(Vref@ 25 C)
V
ref
can be positive or negative depending on whether V
ref
Min or V
ref
Max occurs at the lower ambient temperature. (Refer to Figure 6.)
Example :
Vref
Vref@ 25 C
8.0 mV and slope is positive,
2.495 V, TA
70 C
Vref
0.008 x 106
70 (2.495)
45.8 ppm
C
3. The dynamic impedance Z
KA
is defined as:
|ZKA|
VKA
IK
. When the device is programmed with two external resistors, R1 and R2,
(refer to Figure 2) the total dynamic impedance of the circuit is defined as:
|ZKA|
|ZKA|
1
R1
R2
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