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TL1431KTP データシート(PDF) 7 Page - Texas Instruments

部品番号 TL1431KTP
部品情報  PRECISION PROGRAMMABLE REFERENCE
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メーカー  TI [Texas Instruments]
ホームページ  http://www.ti.com
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TL1431KTP データシート(HTML) 7 Page - Texas Instruments

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TL1431
PRECISION PROGRAMMABLE REFERENCE
SLVS062F – DECEMBER 1991 – REVISED JANUARY 2000
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics at IKA = 10 mA, TA = 25°C
PARAMETER
TEST CONDITIONS
TEST
TL1431Y
UNIT
PARAMETER
TEST CONDITIONS
CIRCUIT
MIN
TYP
MAX
UNIT
VI(ref)
Reference input voltage
VKA = VI(ref)
Figure 1
2490
2500
2510
mV
DV
I(ref)
Ratio of change in reference input voltage
∆VKA =3Vto36V
Figure 2
11
2
mV/V
I(ref)
DV
KA
gg
to the change in cathode voltage
∆VKA = 3 V to 36 V
Figure 2
–1.1
–2
mV/V
II(ref)
Reference input current
R1 = 10 k
Ω,
R2 =
Figure 2
1.44
2.5
µA
IKAmin
Minimum cathode current for regulation
VKA = VI(ref) to 36 V
Figure 1
0.45
1
mA
Ioff
Off-state cathode current
VKA = 36 V,
Vref = 0
Figure 3
0.18
0.5
µA
|zKA|
Output impedance†
VKA = VI(ref), f ≤ 1 kHz,
IKA = 1 mA to 100 mA
Figure 1
0.2
0.4
† The output impedance is defined as: |z
′| + DV
DI
When the device is operating with two external resistors (see Figure 2), the total dynamic impedance of the circuit is given by: z
KA +
DV
KA
DI
KA
,
which is approximately equal to z
KA
1
) R1
R2
.
PARAMETER MEASUREMENT INFORMATION
where:
∆TA is the rated operating temperature range of the device.
Max VI(ref)
Min VI(ref)
∆TA
VI(dev)
a
V
I(ref)
ppm
°C +
V
I(dev)
V
I(ref)
at 25
°C
106
DT
A
Input
VKA
IKA
VI(ref)
Figure 1. Test Circuit for V(KA) = Vref
Input
VKA
IKA
VI(ref)
II(ref)
R1
R2
V
KA +
V
I(ref)
1
) R1
R2
) I
I(ref)
R1
Figure 2. Test Circuit for V(KA) > Vref


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