參數(shù)資料
型號: TLV431ASN1T1
廠商: ON SEMICONDUCTOR
元件分類: 基準電壓源/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, PDSO3
封裝: PLASTIC, SOT-23, 3 PIN
文件頁數(shù): 8/34頁
文件大?。?/td> 646K
代理商: TLV431ASN1T1
SLVS139R JULY 1996 REVISED SEPTEMBER 2005
8
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TLV431B electrical characteristics at 25
°
C free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
TLV431B
TYP
1.24
UNIT
MIN
1.234
MAX
1.246
TA = 25
°
C
VREF
Reference voltage
VKA = VREF,
IK = 10 mA
TA = full range
Figure 1)
TLV431BC
1.227
1.253
V
TLV431BI
1.224
1.259
(see Note 3 and
TLV431BQ
1.221
1.265
VREF deviation over full
temperature range (see Note 4)
VKA = VREF, IK = 10 mA
(see Note 3 and Figure 1)
TLV431BC
4
12
VREF(dev)
TLV431BI
6
20
mV
TLV431BQ
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)
0.1
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)
TLV431BC
0.05
0.3
Iref(dev)
TLV431BI
0.1
0.4
μ
A
TLV431BQ
0.15
0.5
IK(min)
Minimum cathode current for
regulation
VKA = VREF (see Figure 1)
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 TLV431BQ, 40
°
C to 85
°
C for TLV431BI, and 0
°
C to 70
°
C for TLV431BC.
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.
5. The dynamic impedance is defined as zka
IK
VKA
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
V
zka
1
R1
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