參數(shù)資料
型號(hào)： TL431B
廠商： ON SEMICONDUCTOR
英文描述： Programmable Precision References(可編程精密基準(zhǔn))
中文描述： 可編程精密參考（可編程精密基準(zhǔn)）
文件頁(yè)數(shù)： 4/19頁(yè)
文件大?。?/td> 176K
代理商： TL431B
TL431, A, B Series, NCV431A
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS
(T
A
= 25
°
C, unless otherwise noted.)
Characteristic
Symbol
TL431AI / NCV431AI
TL431AC
TL431BI / TL431BV
Unit
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Reference Input Voltage (Figure 1)
V
KA
= V
, I
K
= 10 mA
T
A
= 25
°
C
T
A
= T
low
to T
high
V
ref
2.47
2.44
2.495
2.52
2.55
2.47
2.453
2.495
2.52
2.537
2.483
2.475
2.495
2.495
2.507
2.515
V
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
ref
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
ref
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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TL431BA3 制造商:CYSTEKEC 制造商全稱:Cystech Electonics Corp. 功能描述:Adjustable Precision Shunt Regulators
TL431BCD 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 Adjustable Precision Shunt Regulator RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓?fù)浣Y(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準(zhǔn)確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel
TL431BCD 制造商:ON Semiconductor 功能描述:SHUNT REG ADJ +2.5/36V SOIC8 431
TL431BCDBVR 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 Adjustable Precision Shunt Regulator RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓?fù)浣Y(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準(zhǔn)確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel
TL431BCDBVRE4 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 Adjustable Precision Shunt Regulator RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓?fù)浣Y(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準(zhǔn)確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel
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