參數(shù)資料
型號: TL1431JG
廠商: Texas Instruments, Inc.
英文描述: PRECISION PROGRAMMABLE REFERENCE
中文描述: 精密可編程的參考
文件頁數(shù): 3/8頁
文件大?。?/td> 79K
代理商: TL1431JG
ELECTRICALCHARACTERISTICS
T
amb
= 25
o
C (unless otherwise specified)
Symbol
Parameter
TL1431I
Typ.
TL1431AI
Typ.
Unit
Min.
Max.
Min.
Max.
V
ref
Reference Input Voltage - (figure 1)
V
KA
= V
ref
, I
K
= 10mA
Reference Input Voltage Deviation Over
Temperature Range - (figure 1, note1)
V
KA
= V
ref,
I
K =
10mA, T
min.
T
amb
T
max.
Temperature Coefficient of Reference Input
Voltage - (note 2)
V
KA
= V
ref
, I
K
= 10mA, T
min.
T
amb
T
max.
Ratio of Change in Reference Input Voltage to
Change in Cathode to Anode Voltage - (figure2)
I
K
= 10mA,
V
KA
= 36 to 3V
Reference Input Current - (figure 2)
I
K
= 10mA, R
1
= 10k
, R
=
T
amb
= 25
o
C
T
min.
T
amb
T
max.
Reference Input Current Deviation Over
Temperature Range - (figure 2)
I
K
= 10mA, R
1
= 10k
, R
2
=
T
min.
T
amb
T
max.
Minimum Cathode Current for Regulation
(figure 1)
V
KA
= V
ref
Off-State Cathode Current - (figure 3)
Dynamic Impedance - (figure 1, note 3)
V
KA
= V
ref
,
I
K
= 1 to 100mA, f
1kHz
T
amb
= 25
o
C
2.490
2.500
2.510
2.493
2.500
2.507
V
V
ref
7
30
7
30
mV
V
ref
T
±
22
±
100
±
22
±
100
ppm/
o
C
V
ref
V
KA
-1.1
-2
-1.1
-2
mV/V
Iref
1.5
2.5
3
1.5
2.5
3
μ
A
I
ref
0.5
1
0.8
1.2
μ
A
I
min
0.5
1
0.5
0.7
mA
I
off
|Z
KA
|
180
500
180
500
nA
0.2
0.5
0.2
0.5
T1
T2
Temperature
V
re fmax.
V
ref min.
Notes :
1.
V
ref
is defined as thedifference between the maximum and minimum values obtained over the full temperature
range.
V
ref
= V
ref max.
- V
ref min
2.
The temperature coefficient is defined as the slopes (positiveand negative) of the voltage vs temperature limits whithin
which the reference voltage is guaranteed.
3.
The dynamic Impedance is definedas |Z
KA
|
=
V
KA
I
K
25
C
Te mperature
max
2.5V
min
-n p pm/
C
+ n pm /
C
TL1431
3/8
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