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TLVH431AILPE3 Datasheet(PDF) 10 Page - Texas Instruments

Part # TLVH431AILPE3
Description  LOW-VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATORS
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Manufacturer  TI [Texas Instruments]
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TLVH431AILPE3 Datasheet(HTML) 10 Page - Texas Instruments

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a
V
REF
ppm
oC
+
V
REF(dev)
V
REF (TA
+25
oC)
106
D
T
A
z
KA +
∆V
KA
∆I
K
z
KA +
∆V
∆I [
z
KA
1 )
R1
R2
TLVH431B Electrical Characteristics
DVREF
DVKA
TLVH431, TLVH431A, TLVH431B
TLVH432, TLVH432A, TLVH432B
LOW-VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATORS
SLVS555F – NOVEMBER 2004 – REVISED OCTOBER 2005
at 25
°C free-air temperature (unless otherwise noted)
TLVH431B
TLVH432B
PARAMETER
TEST CONDITIONS
UNIT
MIN
TYP
MAX
TA = 25°C
1.234
1.24
1.246
TLVH431BC
1.227
1.253
VKA = VREF,
VREF
Reference voltage
V
TA = full range,
IK = 10 mA
TLVH431BI
1.224
1.259
See Figure 1(1)
TLVH431BQ
1.221
1.265
TLVH431BC
4
12
VREF deviation over full
VREF(dev)
VKA = VREF, IK = 10 mA, See Figure 1(1)
TLVH431BI
6
20
mV
temperature range(2)
TLVH431BQ
11
31
Ratio of VREF change to
IK = 10 mA, VK = VREF to 18 V, See Figure 2
–1.5
–2.7
mV/V
cathode voltage change
Iref
Reference terminal current
IK = 10 mA, R1 = 10 kΩ, R2 = open, See Figure 2
0.1
0.5
µA
TLVH431BC
0.05
0.3
Iref deviation over full
IK = 10 mA, R1 = 10 kΩ, R2 = open,
Iref(dev)
TLVH431BI
0.1
0.4
µA
temperature range(2)
See Figure 2(1)
TLVH431BQ
0.15
0.5
Minimum cathode current
IK(min)
VKA = VREF, See Figure 1
60
100
µA
for regulation
IK(off)
Off-state cathode current
VREF = 0, VKA = 18 V, See Figure 3
0.02
0.1
µA
|zKA|
Dynamic impedance(3)
VKA = VREF, f ≤ 1 kHz, IK = 0.1 mA to 80 mA, See Figure 1
0.25
0.4
(1)
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.
(2)
The deviation parameters VREF(dev) and Iref(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,
αV
REF, is defined as:
where
∆T
A is the rated operating free-air temperature range of the device.
αV
REF can be positive or negative, depending on whether minimum VREF or maximum VREF, respectively, occurs at the lower
temperature.
(3)
The dynamic impedance is defined as:
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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