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參數(shù)資料
| 型號： | TLVH432QPK |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | LOW-VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATORS |
| 中文描述： | 低電壓調節(jié)精密并聯(lián)穩(wěn)壓器 |
| 文件頁數(shù)： | 10/37頁 |
| 文件大小： | 570K |
| 代理商： | TLVH432QPK |
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www.ti.com
V
REF
ppm
o
C
V
REF(dev)
V
REF
(T
A
25
o
C)
10
6
T
A
zKA
VKA
IK
zKA
V
I
zKA
1
R1
R2
TLVH431B Electrical Characteristics
at 25
°
C free-air temperature (unless otherwise noted)
V
REF
V
KA
TLVH431, TLVH431A, TLVH431B
TLVH432, TLVH432A, TLVH432B
LOW-VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATORS
SLVS555F–NOVEMBER 2004–REVISED OCTOBER 2005
TLVH431B
TLVH432B
MIN
1.234
1.227
1.224
1.221
PARAMETER
TEST CONDITIONS
UNIT
TYP
1.24
MAX
1.246
1.253
1.259
1.265
T
A
= 25
°
C
TLVH431BC
TLVH431BI
TLVH431BQ
TLVH431BC
TLVH431BI
TLVH431BQ
V
KA
= V
,
I
K
= 10 mA
V
REF
Reference voltage
V
T
= full range,
See
Figure 1
(1)
4
6
12
20
31
V
deviation over full
temperature range
(2)
V
REF(dev)
V
KA
= V
REF
, I
K
= 10 mA, See
Figure 1
(1)
mV
11
Ratio of V
change to
cathode voltage change
I
K
= 10 mA, V
K
= V
REF
to 18 V, See
Figure 2
–1.5
–2.7
mV/V
I
ref
Reference terminal current
I
K
= 10 mA, R1 = 10 k
, R2 = open, See
Figure 2
0.1
0.05
0.1
0.15
0.5
0.3
0.4
0.5
μ
A
TLVH431BC
TLVH431BI
TLVH431BQ
I
deviation over full
temperature range
(2)
I
= 10 mA, R1 = 10 k
, R2 = open,
See
Figure 2
(1)
I
ref(dev)
μ
A
Minimum cathode current
for regulation
Off-state cathode current
Dynamic impedance
(3)
I
K(min)
V
KA
= V
REF
, See
Figure 1
60
100
μ
A
I
K(off)
|z
KA
|
V
REF
= 0, V
KA
= 18 V, See
Figure 3
V
KA
= V
REF
, f
≤
1 kHz, I
K
= 0.1 mA to 80 mA, See
Figure 1
0.02
0.25
0.1
0.4
μ
A
(1)
(2)
Full temperature ranges are –40
°
C to 125
°
C for TLVH431Q, –40
°
C to 85
°
C for TLVH431I, and 0
°
C to 70
°
C for TLVH431C.
The deviation parameters V
and I
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
V
REF
, is defined as:
where
T
is the rated operating free-air temperature range of the device.
α
V
can be positive or negative, depending on whether minimum V
REF
or maximum V
REF
, respectively, occurs at the lower
temperature.
The dynamic impedance is defined as:
(3)
When the device is operating with two external resistors (see
Figure 2
), the total dynamic impedance of the circuit is defined as:
10
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