TL431CDMT [MICROSEMI]
Two Terminal Voltage Reference, 1 Output, Trim/Adjustable, BIPolar, PDSO8, PLASTIC, SOIC-8;型号: | TL431CDMT |
厂家: | Microsemi |
描述: | Two Terminal Voltage Reference, 1 Output, Trim/Adjustable, BIPolar, PDSO8, PLASTIC, SOIC-8 光电二极管 |
文件: | 总12页 (文件大小:211K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
TL431/TL431A/TL431B
P
R E C I S I O N P R O G R A M M A B L E R E F E R E N C E S
T H E I N F I N I T E P O W E R O F I N N O V A T I O N
P R O D U C T I O N D A T A S H E E T
DESCRIPTION
KEY FEATURES
W INITIAL VOLTAGE REFERENCE ACCURACY OF
0.4% (TL431B)
W SINK CURRENT CAPABILITY 1mA to 100mA
W TYPICAL OUTPUT DYNAMIC IMPEDANCE
LESS THAN 200mΩ;
TYPICAL OUTPUT IMPEDANCE OF THE
TL431B LESS THAN 100mΩ
W ADJUSTABLE OUTPUT VOLTAGE FROM 2.5V
The TL431/TL431A/TL431B series
precision adjustable three terminal shunt
voltage regulators are pin-to-pin
compatible with the industry standard
TL431. The output voltage of this
reference is programmable by using two
external resistors from 2.5V to 36V.
These devices offer low output
impedance for improved load regulation.
The typical output impedance of these
devices is 200mΩ. These devices find
application in the feedback path of
switching power supplies, OVP
crowbar circuits, reference for A/D,
D/A, and as zener diodes with
improved turn-on characteristics.
TO 36V
W AVAILABLE IN SURFACE-MOUNT PACKAGES
W LOW OUTPUT NOISE
W TYPICAL EQUIVALENT FULL RANGE
NOTE: For current data & package dimensions, visit our web site: http://www.linfinity.com.
TEMPERATURE COEFFICIENT OF 30ppm/°C
W DIRECT PIN-TO-PIN REPLACEMENT FOR
INDUSTRY STANDARD TL431 AND TL1431
PRODUCT HIGHLIGHT
P R E C I S I O N P R O G R A M M A B L E R E F E R E N C E S
VIN
VOUT
R1
R2
TL431/A
& TL431B
R1
R2
VO = 1 +
V
REF
*
PACKAGE ORDER INFORMATION
Plastic SOIC
8-pin
Plastic TO-92
3-pin
Initial
Tolerance
TA (°C)
DM
LP
2%
1%
TL431CDM
TL431ACDM
TL431BCDM
TL431IDM
TL431CLP
0 to 70
TL431ACLP
TL431BCLP
TL431ILP
0.4%
2%
-40 to 85
1%
TL431AIDM
TL431BIDM
TL431AILP
TL431BILP
0.4%
Note: All surface-mount packages are available in Tape & Reel.
Append the letter "T" to part number. (i.e. TL431CDMT)
TO-92 (LP) package also available in ammo-pack.
L I N F I N I T Y M I C R O E L E C T R O N I C S I N C .
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570
Copyright © 1999
Rev. 1.3 9/99
1
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
TL431/TL431A/TL431B
P
R E C I S I O N
P R O G R A M M A B L E R E F E R E N C E S
P R O D U C T I O N D A T A S H E E T
ABSOLUTE MAXIMUM RATINGS (Note 1)
PACKAGE PIN OUTS
Cathode to Anode Voltage (VKA) (Note 2) .................................................... -0.3V to 37V
Reference Input Current (IREF) ................................................................... -50µA to 10mA
Continuous Cathode Current (IK) ......................................................... -100mA to 150mA
Operating Junction Temperature
Plastic (DM, LP Packages) .................................................................................... 150°C
Storage Temperature Range ...................................................................... -65°C to 150°C
Lead Temperature ..................................................................................................... 300°C
1
2
3
4
8
7
6
5
REF
CATHODE
N.C.
ANODE
ANODE
N.C.
ANODE
N.C.
DM PACKAGE
(Top View)
Note 1. Exceeding these ratings could cause damage to the device. All voltages are with respect
to Ground. Currents are positive into, negative out of the specified terminal. Pin
numbers refer to DIL packages only.
Note 2. Voltage values are with respect to the anode terminal unless otherwise noted.
1. CATHODE
2. ANODE
3. REF
THERMAL DATA
DM PACKAGE:
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA
LP PACKAGE:
165°C/W
156°C/W
LP PACKAGE
(Top View)
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA
Junction Temperature Calculation: TJ = TA + (PD x θJA).
The θJA numbers are guidelines for the thermal performance of the device/pc-board system.
All of the above assume no ambient airflow
BLOCK DIAGRAM
Cathode (K)
Ref (R)
VREF
Anode (A)
Copyright © 1999
Rev. 1.3 9/99
2
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
TL431/TL431A/TL431B
P
R E C I S I O N
P R O G R A M M A B L E R E F E R E N C E S
P R O D U C T I O N D A T A S H E E T
ELECTRICAL CHARACTERISTICS (Note 3)
(Unless otherwise specified, these specifications apply over the operating ambient temperatures for TL431C/TL431AC/TL431BC with 0°C ≤ TA ≤ 70°C,
TL431I/TL431AI/TL431BI with -40°C ≤ TA ≤ 85°C.)
TL431/431A/431B
Min. Typ. Max.
Parameter
Symbol
Test Conditions
Units
Reference Input Voltage
TL431
VREF
IK = 10mA, VKA = VREF, TA = 25°C
2440 2495 2550
2470 2495 2520
2490 2500 2510
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV/V
mV/V
µA
µA
µA
mA
µA
µA
µA
µA
Ω
TL431A
TL431B
TL431C
TL431I
IK = 10mA, VKA = VREF, TA = 25°C
IK = 10mA, VKA = VREF, TA = 25°C
IK = 10mA, VKA = VREF
Reference Drift
4
5
4
5
4
5
17
30
17
30
15
20
IK = 10mA, VKA = VREF
TL431AC
TL431AI
TL431BC
TL431BI
∆VREF
∆VKA
IK = 10mA, VKA = VREF
IK = 10mA, VKA = VREF
IK = 10mA, VKA = VREF
IK = 10mA, VKA = VREF
Voltage Ratio, Ref to Cathode TL431, TL431A
IK = 10mA, VKA = 2.5V to 36V
IK = 10mA, VKA = 2.5V to 36V
VKA = VREF, TA = 25°C
-1.4 -2.7
(Note 4)
Reference Input Current
TL431B
TL431,TL431A
-1.1
2
-2
4
IREF
VKA = VREF, TA = 25°C
1.5 1.9
2.3
TL431B
VKA = VREF, TA = Operating Range
VKA = VREF to 36V
Minimum Operating Current
Off-State Cathode Current
IMIN
IOFF
0.4
0.1
0.1
1
1
1
2
TL431
VKA = VREF to 36V, TA = 25°C
VKA = VREF to 36V, TA = 25°C
VKA = VREF to 36V, TA = Operating Range
VKA = 36V, VREF = 0V, TA = 25°C
VKA = VREF, IK = 1mA to 100mA, f ≤ 1kHz, TA = 25°C
VKA = VREF, IK = 1mA to 100mA, f ≤ 1kHz, TA = 25°C
TL431A
TL431B
0.18 0.5
0.2 0.5
0.1 0.2
Dynamic Impedance
TL431
TL431B
| ZKA |
Ω
Note 3. These parameters are guaranteed by design.
∆VREF
Note 4.
Ratio of change in reference input voltage
to the change in cathode voltage.
∆VKA
Copyright © 1999
Rev. 1.3 9/99
3
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
TL431/TL431A/TL431B
P
R E C I S I O N
P R O G R A M M A B L E R E F E R E N C E S
P R O D U C T I O N D A T A S H E E T
GRAPH / CURVE INDEX
FIGURE INDEX
Characteristic Curves
Parameter Measurement Information
FIGURE #
FIGURE #
1. REFERENCE INPUT VOLTAGE vs. FREE-AIR TEMPERATURE
2. REFERENCE INPUT CURRENT vs. FREE-AIR TEMPERATURE
3. CATHODE CURRENT vs. CATHODE VOLTAGE
8. TEST CIRCUIT FOR VKA = VREF
9. TEST CIRCUIT FOR VKA > VREF
10. TEST CIRCUIT FOR IOFF
4. CATHODE CURRENT vs. CATHODE VOLTAGE
5. OFF-STATE CATHODE CURRENT vs. FREE-AIR TEMPERATURE
Typical Characteristics
6. RATIO OF DELTA REFERENCE VOLTAGE TO DELTA CATHODE
FIGURE #
VOLTAGE vs. FREE-AIR TEMPERATURE
11. EQUIVALENT INPUT NOISE VOLTAGE OVER A 10-SECOND PERIOD
12. SMALL-SIGNAL VOLTAGE AMPLIFICATION vs. FREQUENCY
13. REFERENCE IMPEDANCE vs. FREQUENCY
14. PULSE RESPONSE
7. EQUIVALENT INPUT NOISE VOLTAGE vs. FREQUENCY
15. STABILITY BOUNDARY CONDITIONS
Application Information
FIGURE #
16. SHUNT REGULATOR
17. SINGLE-SUPPLY COMPARATOR WITH TEMPERATURE-COMPENSATED
THRESHOLD
18. HIGH CURRENT SHUNT REGULATOR
19. CROWBAR CIRCUIT
20. VOLTAGE MONITOR
21. PRECISION CONSTANT-CURRENT SINK
Copyright © 1999
Rev. 1.3 9/99
4
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
TL431/TL431A/TL431B
P
R E C I S I O N P R O G R A M M A B L E R E F E R E N C E S
P R O D U C T I O N D A T A S H E E T
CHARACTERISTIC CURVES
FIGURE 1. — REFERENCE VOLTAGE
FIGURE 2. — REFERENCE CURRENT
vs. FREE-AIR TEMPERATURE
vs. FREE-AIR TEMPERATURE
2.60
2.58
5
VREF = VKA
IK = 10mA
IK = 10mA
R1 =
¥
VREF = 2550mV
2.56
IK = 10mA
4
3
2
1
0
TL431/A
2.54
2.52
TL431B
2.50
2.48
TL431/A
VREF = 2495mV
VREF = 2440mV
TL431/A
2.46
2.44
TL431B
TL431/A
2.42
2.4
-50
-25
0
25
50
75
100
125
-50
-25
0
25
50
75
100
125
(TA) Ambient Temperature - (°C)
(TA) Ambient Temperature - (°C)
FIGURE 3. — CATHODE CURRENT vs. CATHODE VOLTAGE
FIGURE 4. — CATHODE CURRENT vs. CATHODE VOLTAGE
150
800
VKA = VREF
TA = 25°C
VKA = VREF
125
TA = 25°C
100
600
75
50
25
IMIN
400
0
200
0
TL431/A
-25
TL431B
-50
-75
-100
-200
-2
-1
0
1
2
3
-1
0
1
2
3
(VKA) Cathode Voltage - (V)
(VKA) Cathode Voltage - (V)
Copyright © 1999
Rev. 1.3 9/99
5
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
TL431/TL431A/TL431B
P
R E C I S I O N P R O G R A M M A B L E R E F E R E N C E S
P R O D U C T I O N D A T A S H E E T
CHARACTERISTIC CURVES
FIGURE 5. — OFF-STATE CATHODE CURRENT
FIGURE 6. — RATIO OF DELTA REFERENCE VOLTAGE TO DELTA
vs. FREE-AIR TEMPERATURE
CATHODE VOLTAGE vs. FREE-AIR TEMPERATURE
-0.85
2.5
VKA = 36V
REF = 0
TL431/A
& TL431B
VKA = 3V to 36V
V
-0.95
2
1.5
1
-1.05
-1.15
-1.25
-1.35
-1.45
0.5
0
-50
-25
0
25
50
75
100
125
-50
-25
0
25
50
75
100
125
(TA) Ambient Temperature - (°C)
(TA) Ambient Temperature - (°C)
FIGURE 7. — EQUIVALENT INPUT NOISE VOLTAGE
vs. FREQUENCY
260
IO = 10mA
TA = 25°C
240
220
200
180
160
140
120
100
10
100
1k
10k
100k
(f) Frequency - (Hz)
Copyright © 1999
Rev. 1.3 9/99
6
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
TL431/TL431A/TL431B
P
R E C I S I O N
P R O G R A M M A B L E R E F E R E N C E S
P R O D U C T I O N D A T A S H E E T
PARAMETER MEASUREMENT INFORMATION
VKA
Input
VKA
Input
IK
IK
R1
R2
IREF
VREF
VREF
FIGURE 9 — TEST CIRCUIT FOR VKA > VREF
FIGURE 8 — TEST CIRCUIT FOR VKA = VREF
VKA
Input
IOFF
FIGURE 10 — TEST CIRCUIT FOR IOFF
Copyright © 1999
Rev. 1.3 9/99
7
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
TL431/TL431A/TL431B
P
R E C I S I O N P R O G R A M M A B L E R E F E R E N C E S
P R O D U C T I O N D A T A S H E E T
TYPICAL CHARACTERISTICS
6
f = 0.1 to 10Hz
IK = 10mA
TA = 25°C
5
4
3
2
1
0
-1
-2
-3
-4
-5
-6
0
2
4
6
8
10
(t) Time - (s)
FIGURE 11. — EQUIVALENT INPUT NOISE VOLTAGE OVER A 10-SECOND PERIOD
19.1V
1k
VCC
910
500µF
2000µF
VCC
1µF
TL431/A
& TL431B (DUT)
TLE2027
AV = 10V/mV
820
16
TLE2027
2.2µF
16k
16k
1µF
33k
33k
CRO
1M
AV = 2V/V
0.1µF
VEE
VEE
Test Circuit for 0.1Hz to 10Hz Equivalent Input Noise Voltage
Copyright © 1999
Rev. 1.3 9/99
8
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
TL431/TL431A/TL431B
P
R E C I S I O N P R O G R A M M A B L E R E F E R E N C E S
P R O D U C T I O N D A T A S H E E T
TYPICAL CHARACTERISTICS
FIGURE 12. — SMALL-SIGNAL VOLTAGE AMPLIFICATION
vs. FREQUENCY
70
Output
IK = 10mA
TA = 25°C
60
50
40
30
20
10
0
IK
230
15k
9µF
8.25k
GND
Test Circuit for Voltage Amplification
-10
10k
1M
10M
1k
100k
(f) Frequency - (Hz)
FIGURE 13. — REFERENCE IMPEDANCE vs. FREQUENCY
100
Output
IK = 1mA to 100mA
TA = 25°C
1k
IK
10
50
1
GND
Test Circuit for Reference Impedance
0.1
1k
100k
1M
10M
10k
(f) Frequency - (Hz)
Copyright © 1999
Rev. 1.3 9/99
9
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
TL431/TL431A/TL431B
P
R E C I S I O N P R O G R A M M A B L E R E F E R E N C E S
P R O D U C T I O N D A T A S H E E T
TYPICAL CHARACTERISTICS
FIGURE 14. — PULSE RESPONSE
6
5
4
3
Output
220
Pulse
Generator
f = 100kHz
50
2
1
0
3
2
GND
1
0
Test Circuit for Pulse Response
0
1
2
3
4
5
6
(t) Time - (µs)
FIGURE 15. — STABILITY BOUNDARY CONDITIONS
IK
R1=10k
100
150
IK = 10mA
TA = 25°C
A VKA = VREF
B VKA = 5V
C VKA = 10V
D VKA = 15V
90
80
70
60
50
40
30
20
10
0
CL
B*
R2
VBATT
Stable
Stable
C*
D*
A*
Test Circuit for Curve A
150
IK
CL
VBATT
0.001
0.01
0.1
1
10
(CL) Load Capacitance - (µF)
* The areas under the curves represent conditions that may cause the
device to oscillate. For curves B, C, and D, R2 and V+ were adjusted to
establish the initial VKA and IK conditions with CL = 0. VBATT and CL were
then adjusted to determine the ranges of stability.
Test Circuit for Curves B, C, and D
Copyright © 1999
Rev. 1.3 9/99
10
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
TL431/TL431A/TL431B
P
R E C I S I O N P R O G R A M M A B L E R E F E R E N C E S
P R O D U C T I O N D A T A S H E E T
APPLICATION INFORMATION
R (see Note)
VBATT
VO
VBATT
IK
R1 0.1%
TL431/A
& TL431B
VO
TL431/A
& TL431B
VREF
VON 2V
VOFF VBATT
Input
R2 0.1%
GND
R1
R2
VO = 1 +
V
REF
*
Note: R should provide ≥ 1mA cathode current to
the TL431/A & TL1431 at minimum VBATT
.
FIGURE 16 — SHUNT REGULATOR
FIGURE 17 — SINGLE-SUPPLY COMPARATOR WITH
TEMPERATURE-COMPENSATED THRESHOLD
VBATT
VO
VBATT
VO
R1
R1
TL431/A
& TL431B
C
(see Note)
TL431/A
& TL431B
R2
R2
Note: Refer to the stability boundary conditions in
Figure 15 to determine allowable values for C.
R1
R2
VO = 1 +
V
REF
*
FIGURE 18 — HIGH CURRENT SHUNT REGULATOR
FIGURE 19 — CROWBAR CIRCUIT
Copyright © 1999
Rev. 1.3 9/99
11
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
TL431/TL431A/TL431B
P
R E C I S I O N P R O G R A M M A B L E R E F E R E N C E S
P R O D U C T I O N D A T A S H E E T
APPLICATION INFORMATION
R3 (see Note)
VBATT
12V
R1A
IO
R4
(Note)
TL431/A
& TL431B
TL431/A
& TL431B
RS
0.1%
R2A
R2B
R1B
R2B
Low Limit = 1 +
High Limit = 1 +
V
V
*
*
REF
LED On when
Low Limit < VBATT < High Limit
R1B
R2B
VREF
RS
REF
IO =
Note: R3 and R4 are selected to provide the desired LED intensity and≥ 1mA
cathode current to the TL431/A & TL431B at the available V+.
FIGURE 20 — VOLTAGE MONITOR
FIGURE 21 — PRECISION CONTANT-CURRENT SINK
PRODUCTIONDATA-InformationcontainedinthisdocumentisproprietarytoLinFinity, andiscurrentasofpublicationdate. Thisdocument
may not be modified in any way without the express written consent of LinFinity. Product processing does not necessarily include testing of
all parameters. Linfinity reserves the right to change the configuration and performance of the product and to discontinue product at any time.
Copyright © 1999
Rev. 1.3 9/99
12
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