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TL1431CKTPR датащит (Datasheet) 5 Page - Texas Instruments

№ деталь TL1431CKTPR
подробность  PRECISION PROGRAMMABLE REFERENCE
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производитель  TI [Texas Instruments]
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where:
∆TA is the rated operating temperature range of the device.
Max VI(ref)
Min VI(ref)
˙TA
VI(dev)
α
VI(ref)
ppm
°C
V
I(dev)
V
I(ref)
at 25
°C
× 10
6
T
A
(
( =
(
(
(4)
The output impedance is defined as:
∆I
KA
∆V
KA
|z | =
KA
When the device is operating with two external resistors (see Figure 2), the total dynamic impedance of the circuit is given by:
∆I
∆V
|z'| =
,
which is approximately equal to
R2
R1
|z |
KA
(1 +
(
.
Electrical Characteristics
∆V
KA
∆V
I(ref)
TL1431
PRECISION PROGRAMMABLE REFERENCE
SLVS062K – DECEMBER 1991 – REVISED OCTOBER 2006
at specified free-air temperature, I
KA = 10 mA (unless otherwise noted)
TL1431Q
TL1431M
TEST
PARAMETER
TEST CONDITIONS
TA(1)
UNIT
CIRCUIT
MIN
TYP
MAX
MIN
TYP
MAX
25
°C
2490
2500
2510
2475
2500
2540
VI(ref)
Reference input voltage
VKA = VI(ref)
Figure 1
mV
Full
2470
2530
2460
2550
range
Deviation of reference
Full
VI(dev)
input voltage over full
VKA = VI(ref)
Figure 1
17
55
17
55(3)
mV
range
temperature range(2)
Ratio of change in
reference input voltage
Full
∆V
KA = 3 V to 36 V
Figure 2
–1.1
–2
–1.1
–2
mV/V
to the change in
range
cathode voltage
25
°C
1.5
2.5
1.5
2.5
II(ref)
Reference input current
R1 = 10 k
Ω, R2 = ∞
Figure 2
µA
Full
4
5
range
Deviation of reference
Full
II(dev)
input current over full
R1 = 10 k
Ω, R2 = ∞
Figure 2
0.5
2
0.5
3(3)
µA
range
temperature range(2)
Minimum cathode
Imin
VKA = VI(ref)
25
°C
Figure 1
0.45
1
0.45
1
mA
current for regulation
25
°C
0.18
0.5
0.18
0.5
Off-state cathode
Ioff
VKA = 36 V, VI(ref) = 0
Figure 3
µA
Full
current
2
2
range
VKA = VI(ref), f ≤ 1 kHz,
|zKA|
Output impedance(4)
25
°C
Figure 1
0.2
0.4
0.2
0.4
IKA = 1 mA to 100 mA
(1)
Full range is –40
°C to 125°C for Q-suffix devices and –55°C to 125°C for M-suffix devices.
(2)
The deviation parameters VI(dev) and II(dev) are defined as the differences between the maximum and minimum values obtained over the
rated temperature range. The average full-range temperature coefficient of the reference input voltage
α
VI(ref) is defined as:
α
VI(ref) is positive or negative, depending on whether minimum VI(ref) or maximum VI(ref), respectively, occurs at the lower temperature.
(3)
On products compliant to MIL-PRF-38535, this parameter is not production tested.
5
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