參數資料
型號： NCV431AIDR2
廠商： ON SEMICONDUCTOR
元件分類： 基準電壓源/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： 4/18頁
文件大?。?/td> 173K
代理商： NCV431AIDR2
TL431, A, B Series, NCV431A
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS
(T
A
= 25
°
C, unless otherwise noted.)
TL431AI / NCV431AI
TL431AC
TL431BI / TL431BV
Characteristic
Symbol
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Unit
Reference Input Voltage (Figure 1)
Reference In ut Voltage (Figure 1)
= V
= 10 mA
T
= 25 C
°
C
t T
T
A
= T
low
to T
high
ref
V
V
2 47
2.47
2 44
2.44
2 495
2.495
2 52
2.52
2 55
2.55
2 47
2.47
2 453
2.453
2 495
2.495
2 52
2.52
2 537
2.537
2 483
2.483
2 475
2.475
2 495
2.495
2 495
2.495
2 507
2.507
2 515
2.515
V
KA
V
ref
, I
K
10 mA
A
Reference Input Voltage Deviation Over
Temperature Range (Figure 1, Notes 4, 5)
V
KA
= V
ref,
I
K
= 10 mA
V
ref
7.0
30
3.0
17
3.0
17
mV
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
V
KA
= 36 V to 10 V
Vref
VKA
1.4
1.0
2.7
2.0
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 4)
I
ref
1.8
4.0
6.5
1.8
4.0
5.2
1.1
2.0
4.0
A
Reference Input Current Deviation Over
Temperature Range (Figure 2, Note 4)
I
K
= 10 mA, R1 = 10 k, R2 =
∞
I
ref
0.8
2.5
0.4
1.2
0.8
2.5
A
Minimum Cathode Current For Regulation
V
KA
= V
ref
(Figure 1)
I
min
0.5
1.0
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
0.23
500
nA
Dynamic Impedance (Figure 1, Note 6)
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
0.14
0.3
4. T
low
=
40
°
C for TL431AIP TL431AILP, TL431IP, TL431ILP, TL431BID, TL431BIP, TL431BILP, TL431BV, TL431AIDM, TL431IDM,
TL431BIDM, NCV431AIDMR2, NCV431AIDR2
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
= +125
°
C TL431BV, NCV431AIDMR2, NCV431AIDR2
5. 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
=
=
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
6. 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|
7. NCV431AIDMR2, NCV431AIDR2 T
low
= 40
°
C, T
high
= +125
°
C. Guaranteed by design. NCV prefix is for automotive and other applications
requiring site and change control.
|ZKA|
1
R1
R2
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