參數(shù)資料
型號(hào): TLV431B
廠商: ON SEMICONDUCTOR
英文描述: Low Voltage Precision Adjustable Shunt Regulator(低壓可調(diào)精密分流穩(wěn)壓器)
中文描述: 低電壓精密可調(diào)并聯(lián)穩(wěn)壓器(低壓可調(diào)精密分流穩(wěn)壓器)
文件頁(yè)數(shù): 3/14頁(yè)
文件大?。?/td> 146K
代理商: TLV431B
TLV431A, TLV431B
http://onsemi.com
3
ELECTRICAL CHARACTERISTICS
(T
A
= 25
°
C unless otherwise noted)
Characteristic
Symbol
TLV431A
TLV431B
Unit
Min
Typ
Max
Min
Typ
Max
Reference Voltage (Figure 3)
(V
KA
= V
ref
, I
K
= 10 mA, T
A
= 25
°
C)
(T
A
= T
low
to T
high
, Note 1)
V
ref
1.228
1.215
1.240
1.252
1.265
1.234
1.228
1.240
1.246
1.252
V
Reference Input Voltage Deviation Over Temperature (Figure 3)
(V
KA
= V
ref
, I
K
= 10 mA, T
A
= T
low
to T
high
, Note 1)
V
ref
7.2
20
7.2
20
mV
Ration of Reference Input Voltage Change to Cathode Voltage
Change (Figure 4)
(V
KA
= V
ref
to 16 V, I
K
= 10 mA)
V
ref
V
KA
0.6
1.5
0.6
1.5
mV
V
Reference Terminal Current (Figure 4)
(I
K
= 10 mA, R1 = 10 k , R2 = open)
I
ref
0.15
0.3
0.15
0.3
A
Reference Input Current Deviation Over Temperature (Figure 4)
(I
K
= 10 mA, R1 = 10 k , R2 = open, Notes 1, 2)
I
ref
0.04
0.08
0.04
0.08
A
Minimum Cathode Current for Regulation (Figure 3)
I
K(min
)
55
80
55
80
A
OffState Cathode Current (Figure 5)
(V
KA
= 6.0 V, V
ref
= 0)
(V
KA
= 16 V, V
ref
= 0)
I
K(off)
0.01
0.012
0.04
0.05
0.01
0.012
0.04
0.05
A
Dynamic Impedance (Figure 3)
(V
KA
= V
ref
, I
K
=0.1 mA to 20 mA, f
1.0 kHz, Note 3)
|Z
KA
|
0.25
0.4
0.25
0.4
1. Ambient temperature range: T
low
=
2. The deviation parameters V
ref
and I
ref
are defined as the difference between the maximum value and minimum value obtained over the
full operating ambient temperature range that applied.
40
°
C, T
high
= 85
°
C.
V
ref
Max
V
ref
Min
T
1
T
2
Ambient Temperature
V
ref
= V
ref
Max V
ref
Min
T
A
= T
2
T
1
The average temperature coefficient of the reference input voltage, V
ref
is defined as:
α
Vref
ppm
°
C
( Vref)
Vref(TA
25
°
C)
10
6
TA
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 8.
Example: V
ref
= 7.2 mV and the slope is positive,
Example:
V
ref
@ 25
°
C = 1.241 V
Example:
T
A
= 125
°
C
α
Vref
ppm
°
C
0.0072
1.241
125
46 ppm
°
C
10
6
3. The dynamic impedance Z
KA
is defined as:
ZKA
VKA
I
K
When the device is operating with two external resistors, R1 and R2, (refer to Figure 4) the total dynamic impedance of the circuit is given by:
ZKA
ZKA
1
R1
R2
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