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TL431A Datenblatt(PDF) 4 Page - Analog Intergrations Corporation

Teilenummer TL431A
Bauteilbeschribung  Adjustable Precision Shunt Regulator
Download  14 Pages
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Hersteller  AIC [Analog Intergrations Corporation]
Direct Link  http://www.analog.com.tw
Logo AIC - Analog Intergrations Corporation

TL431A Datenblatt(HTML) 4 Page - Analog Intergrations Corporation

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AIC431/TL431A/TL431
4
ELECTRICAL CHARACTERISTICS
(TA=25C, unless otherwise specified.) (Note 1)
PARAMETER
TEST CONDITIONS
SYMBOL
MIN.
TYP.
MAX.
UNIT
VZ=VREF,
AIC431
2.482
2.495
2.508
IIN =10mA (Fig. 1)
TL431A
2.470
2.495
2.520
Reference Voltage
TL431
VREF
2.455
2.495
2.535
V
VZ = VREF , IIN =10mA,
TA = 0C~ +70C (Fig. 1)
9.0
20
Deviation of Reference
Input Voltage Over
Temperature (Note 2)
TA = -40C~ +85C (Fig. 1)
VDEV
9.0
50
mV
VZ=10V-VREF
-0.5
-2.0
mV/V
Ratio of the Change in
Reference Voltage to the
Change in Cathode voltage
IZ=10mA
(Fig. 2)
VZ=30V-10V
V
REF
V
Z
-0.35
-1.5
mV/V
Reference Input Current
R1 =10K
, R2=,
IIN =10mA (Fig. 2)
IREF
0.8
3.5
A
Deviation of Reference Input
Current over Temperature
R1 =10K
, R2=,
IIN =10mA
TA =-40C ~ +85C (Fig. 2)
I
REF
0.3
1.2
A
Minimum Cathode current for
Regulation
VZ=VREF (Fig. 1)
IZ(MIN)
0.25
0.5
mA
Off-State Current
VZ=20V, VREF =0V (Fig. 3)
IZ(OFF)
0.1
1.0
A
Dynamic Output Impedance
(Note 3)
VZ=VREF
F<1KHz (Fig. 1)
RZ
0.08
0.3
Note 1: Specifications are production tested at TA=25C.
Specifications
over
the
-40
C to 85C operating
temperature
range
are
assured
by
design,
characterization and correlation with Statistical Quality
Controls (SQC).
T2
T1
VMAX
VDEV = VMAX-VMIN
VMIN
TEMPERATURE
Note 2: Deviation of reference input voltage, V
DEV, is
defined as the maximum variation of the reference input
voltage over the full temperature range.
The average temperature coefficient of the reference
input voltage,
V
REF is defined as:
T1
T2
1
C)
25
(at
V
V
T1
T2
6
10
C)
25
(at
V
V
-
V
C
ppm
V
REF
DEV
REF
MIN
MAX
REF
Where:
T2T1=full temperature change.
V
REF
can be positive or negative depending on
whether the slope is positive or negative.
Example: VDEV= 9.0mV, VREF= 2495mV,
T2T1= 70C, slope is negative.
C
50ppm/
V
C
70
6
10
2495mV
9.0mV
REF


Note 3: The dynamic output impedance, Rz, is defined
as:
RZ =
Z
Z
V
I
When the device is programmed with two external
resistors, R1 and R2, (see Fig. 2), the dynamic output
impedance of the overall circuit, is defined as:

R2
R1
1
Rz
I
V
z
r


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