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TLVH431IDBZT Datasheet(PDF) 8 Page - Texas Instruments

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Part # TLVH431IDBZT
Description  LOW-VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATOR
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TLVH431IDBZT Datasheet(HTML) 8 Page - Texas Instruments

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TLVH431, TLVH431A, TLVH431B
TLVH432, TLVH432A, TLVH432B
LOW VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATOR
SLVS555D – NOVEMBER 2004 – REVISED FEBRUARY 2005
8
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TLVH431 electrical characteristics at 25
°C free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
TLVH431, TLVH432
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
TA = 25°C
1.222
1.24
1.258
VREF
Reference voltage
VKA = VREF,
TA = full range
TLVH431C
1.21
1.27
V
VREF
Reference voltage
VKA = VREF,
IK = 10 mA
TA = full range
(see Note 4 and
Figure 1)
TLVH431I
1.202
1.278
V
IK = 10 mA
(see Note 4 and
Figure 1)
TLVH431Q
1.194
1.286
VREF deviation over full
VKA = VREF, IK = 10 mA
TLVH431C
4
12
VREF(dev)
VREF deviation over full
temperature range (see Note 5)
VKA = VREF, IK = 10 mA
(see Note 4 and Figure 1)
TLVH431I
6
20
mV
VREF(dev) temperature range (see Note 5)
(see Note 4 and Figure 1)
TLVH431Q
11
31
mV
∆VREF
∆VKA
Ratio of VREF change to cathode
voltage change
IK = 10 mA
(see Figure 2)
VKA = VREF to 18 V
-1.5
-2.7
mV/V
Iref
Reference terminal current
IK = 10 mA, R1 = 10 kΩ, R2 = open
(see Figure 2)
0.1
0.5
µA
TLVH431C
0.05
0.3
Iref deviation over full temperature IK = 10 mA, R1 = 10 kΩ, R2 = open
TLVH431C
0.05
0.3
Iref(dev)
Iref deviation over full temperature
range (see Note 5)
IK = 10 mA, R1 = 10 kΩ, R2 = open
(see Note 4 and Figure 2)
TLVH431I
0.1
0.4
µA
Iref(dev)
range (see Note 5)
(see Note 4 and Figure 2)
TLVH431Q
0.15
0.5
µA
IK(min)
Minimum cathode current for
regulation
VKA = VREF (see Figure 1)
60
100
µA
IK(off)
Off-state cathode current
VREF = 0, VKA = 18 V (see Figure 3)
0.02
0.1
µA
|zKA|
Dynamic impedance
(see Note 6)
VKA = VREF, f ≤ 1 kHz,
IK = 0.1 mA to 80 mA (see Figure 1)
0.25
0.4
NOTES:
4. 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 the TLVH431C.
5. 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,
αVREF,
is defined as:
αV
REF
ppm
°C +
V
REF(dev)
V
REF (TA+25°C)
106
∆T
A
where
∆TA is the rated operating free-air temperature range of the device.
αVREF can be positive or negative, depending on whether minimum VREF or maximum VREF, respectively, occurs at the
lower temperature.
6. The dynamic impedance is defined as: z
ka +
∆V
KA
∆I
K
When the device is operating with two external resistors (see Figure 2), the total dynamic impedance of the circuit is defined
as:
z
ka +
∆V
∆I [
z
ka
1
) R1
R2


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