TL431LG-SM1-R [UTC]
PROGRAMMABLE PRECISION REFERENCE; 可编程精密基准
| 型号： | TL431LG-SM1-R |
| 厂家： | 
Unisonic Technologies |
| 描述： | PROGRAMMABLE PRECISION REFERENCE |
| 文件： | 总6页 (文件大小：226K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
TL431L
LINEAR INTEGRATED CIRCUIT
PROGRAMMABLE PRECISION
REFERENCE
DESCRIPTION
The UTC TL431L is a three-terminal adjustable regulator with a
guaranteed thermal stability over applicable temperature ranges.
The output voltage may be set to any value between VREF
(approximately 2.5V) and 20V with two external resistors. It provides
very wide applications, including shunt regulator, series regulator,
switching regulator, voltage reference and others.
FEATURES
*Programmable Output Voltage to 20V.
*Low Dynamic Output Impedance 0.2Ω.
*Sink Current Capability of 1.0 ~ 100mA.
*Equivalent full-Range Temperature Coefficient of 50ppm/ °C Typical
for Operation over full Rated Operating Temperature Range.
ORDERING INFORMATION
Ordering Number
Package
Pin Assignment
Packing
Lead Free
TL431LK-AB3-R
TL431LK-AE3-R
TL431LK-AF5-R
TL431LK-S08-R
TL431LK-S08-T
TL431LK-SM1-R
TL431LK-SM1-T
TL431LK-T92-B
TL431LK-T92-K
TL431LK-T92-R
Note: Pin Code: K: Cathode
Halogen Free
TL431LG-AB3-R
TL431LG-AE3-R
TL431LG-AF5-R
TL431LG-S08-R
TL431LG-S08-T
TL431LG-SM1-R
TL431LG-SM1-T
TL431LG-T92-B
TL431LG-T92-K
TL431LG-T92-R
1
R
K
X
K
K
K
K
R
R
R
2
A
R
X
A
A
X
X
A
A
A
3
K
A
K
A
A
X
X
K
K
K
4
-
5
-
6
-
7
-
8
-
SOT-89
SOT-23
SOT-25
SOP-8
SOP-8
MSOP-8
MSOP-8
TO-92
Tape Reel
Tape Reel
Tape Reel
Tape Reel
Tube
-
-
-
-
-
R
X
X
X
X
-
A
X
X
X
X
-
-
-
-
A
A
A
A
-
A
A
X
X
-
R
R
R
R
-
Tape Reel
Tube
Tape Box
Bulk
TO-92
-
-
-
-
-
TO-92
-
-
-
-
-
Tape Reel
A: Anode
R: Reference
X: No Connection
MARKING (SOT-23/SOT-25)
SOT-23
SOT-25
www.unisonic.com.tw
1 of 6
Copyright © 2011 Unisonic Technologies Co., Ltd
QW-R103-014.G
TL431L
LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM
UNISONIC TECHNOLOGIES CO., LTD
2 of 6
QW-R103-014.G
www.unisonic.com.tw
TL431L
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (Operating temperature range applies unless otherwise specified)
PARAMETER
SYMBOL
VKA
RATINGS
20
UNIT
V
Cathode Voltage
Cathode Current Range (Continuous)
Reference Input Current
Junction Temperature
IKA
-100 ~ +150
-0.05 ~ +10
150
mA
mA
°C
IREF
TJ
Operating Temperature
Storage Temperature
TOPR
TSTG
-40 ~ +85
-65 ~ +150
°C
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
VKA
MIN
VREF
1
TYP
MAX
20
UNIT
V
Cathode Voltage
Cathode Current
IKA
100
mA
ELECTRICAL CHARACTERISTICS (TA=25°C, unless otherwise specified)
PARAMETER
SYMBOL
VREF
TEST CONDITIONS
VKA=VREF, IKA=10mA
MIN TYP MAX UNIT
Reference Input Voltage
2.450 2.50 2.550
V
Deviation of Reference Input Voltage
Over temperature (note 1)
V
KA=VREF, IKA=10mA
ΔVREF/ΔT
4.5
17
mV
0≤TA≤70
Ratio of Change in Reference Input
Voltage to the Change in Cathode
Voltage
ΔVKA=10V~VREF
ΔVKA=20V~10V
-1.0
-2.7
ΔVREF /ΔVKA IKA=10mA
mV/V
-0.5
1.5
-2.0
4
Reference Input Current
IREF
IKA=10mA, R1=10kΩ, R2=∞
IKA=10mA, R1=10kΩ, R2=∞
TA=full Temperature
μA
μA
Deviation of Reference Input Current
Over Full Temperature Range
Minimum Cathode Current for Regulation
Off-State Cathode Current
ΔIREF/ΔT
0.4
1.2
IKA(MIN)
IKA(OFF)
VKA=VREF
0.45
0.05
1.0
1.0
mA
VKA=20V, VREF=0
μA
V
KA=VREF, IKA=1 ~ 100mA
Dynamic Impedance
ZKA
0.15
0.5
Ω
f≤1.0kHz
Remark: Reference voltage of ±1% tolerance is also available per customer’s request.
UNISONIC TECHNOLOGIES CO., LTD
3 of 6
QW-R103-014.G
www.unisonic.com.tw
TL431L
TEST CIRCUIT
LINEAR INTEGRATED CIRCUIT
APPLICATION CIRCUIT
VIN
VOUT
IOUT
VIN
Rs
IOUT
VOUT
RCL
Rs
UTC TL431L
RS=VREF/RCL
IOUT=VREF/RS
UTC TL431L
Constant-Current Sink
Current Limiting or Current Source
UNISONIC TECHNOLOGIES CO., LTD
4 of 6
QW-R103-014.G
www.unisonic.com.tw
TL431L
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS
Cathode Current vs. Cathode Voltage
Cathode Current vs. Cathode Voltage
800
TA=25℃
VKA=VREF
TA=25℃
VKA=VREF
125
100
75
600
50
400
IKA(min)
25
0
200
0
-25
-50
-75
-100
-200
-2
-1
0
1
2
3
-2
-1
0
1
2
3
Cathode Voltage (V)
Cathode Voltage (V)
Change in Reference Input Voltage vs.
Cathode voltage
Pulse Response
0
TA=25℃
-5
7
-10
-15
-20
-25
-30
-35
-40
6
5
4
3
2
1
0
IKA=100mA
TA=25℃
0
5
10
15
20
25
30
35
40
0
1
2
3
4
5
6
7
Cathode Voltage (V)
Time (μs)
Dynamic Impedance vs. Frequency
Small Signal Voltage Amplification vs. Frequency
70
102
60
50
40
30
TA=25℃
IKA=0mA ~ 100mA
101
20
10
0
100
TA=25℃
IKA=10mA
10-1
103
-10
104
105
106
107
103
104
105
106
107
Frequency (Hz)
Frequency (Hz)
UNISONIC TECHNOLOGIES CO., LTD
5 of 6
QW-R103-014.G
www.unisonic.com.tw
TL431L
LINEAR INTEGRATED CIRCUIT
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
6 of 6
QW-R103-014.G
www.unisonic.com.tw
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