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부품번호 | LM431 기능 |
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기능 | Adjustable precision shunt regulators | ||
제조업체 | NXP Semiconductors | ||
로고 | |||
전체 16 페이지수
INTEGRATED CIRCUITS
TL431C, TL431AC, TL431I,
TL431AI, LM431AC
Adjustable precision shunt regulators
Product specification
1997 Feb 25
Philips
Semiconductors
Philips Semiconductors
Adjustable precision shunt regulators
Product specification
TL431C, TL431AC, TL431I,
TL431AI, LM431AC
DC ELECTRICAL CHARACTERISTICS
25°C free-air temperature, unless otherwise stated.
SYMBOL
PARAMETER
TEST
CKT
TEST CONDITIONS
VREF
VREF(dev)
Reference input voltage
Deviation of reference input
voltage over full
temperature range3
Fig. 3 VKA = VREF, IK = 10mA
Fig. 3
VKA = VREF, IK = 10mA,
Tamb = full range2
LIMITS
TL431AC
TL431C/LM431AC
MIN TYP MAX MIN TYP MAX
2470 2495 2520 2440 2495 2550
UNIT
mV
4 15
4 17 mV
DVREF
DVKA
IREF
IREF(dev)
Ratio of change in reference
input voltage to the change
in cathode voltage
Reference input current
Deviation of reference input
current over full temperature
range3
Fig. 4
Fig. 4
∆VKA = 10V – VREF
IK = 10mA
∆VKA = 36V – 10V
IK = 10mA, R1 = 10kΩ, R2 = ∞
Fig. 4
IK = 10mA, R1 = 10kΩ, R2 = ∞,
Tamb = full range2
–1.4 –2.7
–1 –2
24
0.8 1.2
–1.4 –2.7
mV/V
–1 –2
2 4 µA
0.4 1.2 µA
IMIN
IOFF
| ZKA |
Minimum cathode current
for regulation
Off-state cathode current
Dynamic impedance4
Fig. 3 VKA = VREF
Fig. 5
Fig. 3
VKA = 36V, VREF = 0
VKA = VREF, IK = 1mA to 100mA,
f ≤ 1kHz
0.4 0.6
0.1 0.5
0.2 0.5
0.4 1 mA
0.1 1
µA
0.2 0.5
Ω
25°C free-air temperature, unless otherwise stated.
SYMBOL
PARAMETER
TEST
CKT
TEST CONDITIONS
VREF
VREF(dev)
Reference input voltage
Deviation of reference input
voltage over full
temperature range3
Fig. 3 VKA = VREF, IK = 10mA
Fig. 3
VKA = VREF, IK = 10mA,
Tamb = full range2
LIMITS
TL431AI
TL431I
MIN TYP MAX MIN TYP MAX
2470 2495 2520 2440 2495 2550
UNIT
mV
5 25
5 30 mV
DVREF
DVKA
IREF
IREF(dev)
Ratio of change in reference
input voltage to the change
in cathode voltage
Reference input current
Deviation of reference input
current over full temperature
range3
Fig. 4
Fig. 4
∆VKA = 10V – VREF
IK = 10mA
∆VKA = 36V – 10V
IK = 10mA, R1 = 10kΩ, R2 = ∞
Fig. 4
IK = 10mA, R1 = 10kΩ, R2 = ∞,
Tamb = full range2
–1.4 –2.7
–1 –2
24
0.8 2.5
–1.4 –2.7
mV/V
–1 –2
2 4 µA
0.8 2.5 µA
IMIN
IOFF
| ZKA |
Minimum cathode current
for regulation
Off-state cathode current
Dynamic impedance4
Fig. 3 VKA = VREF
Fig. 5
Fig. 3
VKA = 36V, VREF = 0
VKA = VREF, IK = 1mA to 100mA,
f ≤ 1kHz
0.4 0.7
0.1 0.5
0.2 0.5
0.4 1
0.1 1
0.2 0.5
µA
µA
Ω
NOTES:
2. Full temperature range is –40°C to +85°C for the TL431I and TL431AI, and 0°C to +70°C for the TL431C and TL431AC.
3. The deviation parameters VREF(dev) and IREF(dev) are defined as the differences between the maximum and minimum values obtained over
the rated termperature range. The average full-range temperature coefficient of the reference input voltage, αVREF, is defined as:
ǒ Ǔppm
VREF(dev)
VREF at 25oC
@ 106
ǒ Ǔ| aVREF | deg C +
DTamb
Max VREF
VREF(dev)
Min VREF
∆Tamb
where ∆Tamb is the rated operating free-air temperature range of the device.
1997 Feb 25
4
4페이지 Philips Semiconductors
Adjustable precision shunt regulators
Product specification
TL431C, TL431AC, TL431I,
TL431AI, LM431AC
4
3
2
1
0
–1
–2
–3
–4
0 1 2 3 4 5 6 7 8 9 10
t – TIME – (SECONDS)
Equivalent Input Noise Voltage Over a 10-Second Period
19.1V
1kΩ
500µF
910Ω
2000µF
TL431
(DUT)
820Ω
16Ω
0.1µF
VCC
TLE2027
AV = 10V/mV
1µF
160kΩ
16kΩ 16kΩ
1µF
VCC
TLE2027
AV = 2V/V
33kΩ
33kΩ
VEE
Test Circuit
Figure 12.
VEE
22µF
1MΩ
CRO
SL01174
1997 Feb 25
400
IK = 10mA
Tamb = 25°C
350
300
250
200
150
100
10
100 1K 10K
f–FREQUENCY–Hz
Figure 13. Equivalent Input Noise Voltage vs. Frequency
100K
7
SL01180
7페이지 | |||
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DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |