參數(shù)資料
型號: TLV431ALPRE
廠商: ON SEMICONDUCTOR
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: Low Voltage Precision Adjustable Shunt Regulator
中文描述: 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.24 V, PBCY3
封裝: PLASTIC, TO-92, 3 PIN
文件頁數(shù): 7/34頁
文件大?。?/td> 646K
代理商: TLV431ALPRE
SLVS139R JULY 1996 REVISED SEPTEMBER 2005
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TLV431A electrical characteristics at 25
°
C free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
TLV431A
TYP
1.24
UNIT
MIN
1.228
MAX
1.252
TA = 25
°
C
VREF
Reference voltage
VKA = VREF,
IK = 10 mA
TA = full range
Figure 1)
TLV431AC
1.221
1.259
V
TLV431AI
1.215
1.265
(see Note 3 and
TLV431AQ
1.209
1.271
VREF deviation over full
temperature range (see Note 4)
VKA = VREF, IK = 10 mA
(see Note 3 and Figure 1)
TLV431AC
4
12
VREF(dev)
TLV431AI
6
20
mV
TLV431AQ
11
31
VREF
VKA
Iref
Ratio of VREF change in cathode
voltage change
VKA = VREF to 6 V, IK = 10 mA (see Figure 2)
1.5
2.7
mV/V
Reference terminal current
IK = 10 mA, R1 = 10 k
, R2 = open (see Figure 2)
0.15
0.5
μ
A
Iref deviation over full
temperature range (see Note 4)
IK = 10 mA, R1 = 10 k
, R2 = open
(see Note 3 and Figure 2)
TLV431AC
0.05
0.3
Iref(dev)
TLV431AI
0.1
0.4
μ
A
TLV431AQ
0.15
0.5
IK(min)
Minimum cathode current for
regulation
VKA = VREF (see Figure 1)
TLV431AC/AI
55
80
TLV431AQ
55
100
μ
A
IK(off)
Off-state cathode current
VREF = 0, VKA = 6 V (see Figure 3)
VKA = VREF, f
1 kHz,
IK = 0.1 mA to 15 mA (see Figure 1)
0.001
0.1
μ
A
|zKA|
Dynamic impedance
(see Note 5)
0.25
0.4
NOTES:
3. Full temperature ranges are 40
°
C to 125
°
C for TLV431AQ, 40
°
C to 85
°
C for TLV431AI, and 0
°
C to 70
°
C for TLV431AC.
4. 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,
α
VREF,
is defined as:
VREF(dev)
V
REF
(T
A
α
V
REF
ppm
°
C
25
°
C)
106
TA
where
TA is the rated operating free-air temperature range of the device.
α
VREF can be positive or negative, depending on whether minimum VREF or maximum VREF, respectively, occurs at the
lower temperature.
VKA
IK
When the device is operating with two external resistors (see Figure 2), the total dynamic impedance of the circuit is defined
as:
zka
I
R2
5. The dynamic impedance is defined as zka
V
zka
1
R1
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