TI TL1431-SP

TL1431-SP
www.ti.com
SLVSB44 – JULY 2012
CLASS V, PRECISION PROGRAMMABLE REFERENCE
Check for Samples: TL1431-SP
FEATURES
1
•
•
•
•
•
•
•
JG PACKAGE
(TOP VIEW)
QMLV Qualified, SMD 5962-99620
0.4% Initial Voltage Tolerance
0.2-Ω Typical Output Impedance
Fast Turnon…500 ns
Sink Current Capability…1 mA to 100 mA
Low Reference Current (REF)
Adjustable Output Voltage…VI(ref) to 36 V
CATHODE
NC
NC
NC
1
8
2
7
3
6
4
5
REF
NC
ANODE
NC
NC – No internal connection
DESCRIPTION/ORDERING INFORMATION
The TL1431 is a precision programmable reference with specified thermal stability over automotive, commercial,
and military temperature ranges. The output voltage can be set to any value between VI(ref) (approximately 2.5 V)
and 36 V with two external resistors. This device has a typical output impedance of 0.2 Ω. Active output circuitry
provides a very sharp turnon characteristic, making the device an excellent replacement for Zener diodes and
other types of references in applications such as onboard regulation, adjustable power supplies, and switching
power supplies.
The TL1431 is characterized for operation over the full military temperature range of –55°C to 125°C.
ORDERING INFORMATION (1)
PACKAGE (2)
TA
–55°C to 125°C
(1)
(2)
ORDERABLE PART NUMBER
TOP-SIDE MARKING
CDIP – JG
Tube of 50
5962-9962001VPA
9962001VPA
CFP – U
TBD
5962-9962001VHA (Preview)
9962001VHA
For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
SYMBOL
REF
ANODE
CATHODE
FUNCTIONAL BLOCK DIAGRAM
CATHODE
+
−
REF
Vref
ANODE
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2012, Texas Instruments Incorporated
TL1431-SP
SLVSB44 – JULY 2012
www.ti.com
EQUIVALENT SCHEMATIC
CATHODE
1
800 Ω
REF
800 Ω
8
20 pF
150 Ω
4 kΩ
3.28 kΩ
10 kΩ
2.4 kΩ
20 pF
7.2 kΩ
1 kΩ
800 Ω
ANODE
2, 3, 6, 7
Absolute Maximum Ratings (1)
over operating free-air temperature range (unless otherwise noted)
MIN
VKA
Cathode voltage (2)
IKA
Continuous cathode current range
II(ref)
Reference input current range
θJC
Package thermal impedance (3)
(4)
TJ
Operating virtual junction temperature
Lead temperature
Tstg
(1)
(2)
(3)
(4)
MAX
V
–100
150
mA
–0.05
10
mA
JG package
14.5
U package
TBD
1,6 mm (1/16 in) from case for 10 s
Storage temperature range
UNIT
37
–65
°C/W
150
°C
260
°C
150
°C
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
All voltage values are with respect to ANODE, unless otherwise noted.
Maximum power dissipation is a function of TJ(max), θJC, and TC. The maximum allowable power dissipation at any allowable case
temperature is PD = (TJ(max) – TC)/θJC. Operating at the absolute maximum TJ of 150°C can affect reliability.
The package thermal impedance is calculated in accordance with MIL-STD-883.
Recommended Operating Conditions
MIN
MAX
UNIT
VKA
Cathode voltage
VI(ref)
36
V
IKA
Cathode current
1
100
mA
TA
Operating free-air temperature
–55
125
°C
2
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Electrical Characteristics
at specified free-air temperature, IKA = 10 mA (unless otherwise noted)
PARAMETER
TEST CONDITIONS
TA
(1)
TEST
CIRCUIT
25°C
TYP
MAX
2475
2500
2540
UNIT
VI(ref)
Reference input voltage
VKA = VI(ref)
VI(dev)
Deviation of reference input
voltage over full temperature
range (2)
VKA = VI(ref)
Full
range
Figure 1
17
55 (3)
∆VI(ref)
∆VKA
Ratio of change in reference
input voltage to the change in
cathode voltage
ΔVKA = 3 V to 36 V
Full
range
Figure 2
–1.1
–2
1.5
2.5
II(ref)
Reference input current
R1 = 10 kΩ, R2 = ∞
II(dev)
Deviation of reference input
current over full temperature
range (2)
R1 = 10 kΩ, R2 = ∞
Full
range
Figure 2
0.5
3 (3)
μA
Imin
Minimum cathode current for
regulation
VKA = VI(ref)
25°C
Figure 1
0.45
1
mA
0.18
0.5
Ioff
Off-state cathode current
VKA = 36 V, VI(ref) = 0
|zKA|
Output impedance (4)
VKA = VI(ref), f ≤ 1 kHz,
IKA = 1 mA to 100 mA
Full
range
Figure 1
MIN
2460
25°C
Full
range
Figure 2
5
25°C
(1)
(2)
2550
Full
range
Figure 3
25°C
Figure 1
2
0.2
0.4
mV
mV
mV/V
μA
μA
Ω
Full range is –55°C to 125°C.
The deviation parameters VI(dev) and II(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 αVI(ref) is defined as:
αVI(ref)
(
ppm
=
°C
(
(
V(
I dev)
°
V ( ) at 25 C
I ref
(
6
× 10
Max VI(ref)
TA
VI(dev)
where:
∆TA is the rated operating temperature range of the device.
Min VI(ref)
˙TA
(3)
(4)
αVI(ref) is positive or negative, depending on whether minimum VI(ref) or maximum VI(ref), respectively, occurs at the lower temperature.
On products compliant to MIL-PRF-38535, this parameter is not production tested.
∆VKA
|zKA| =
∆IKA
The output impedance is defined as:
When the device is operating with two external resistors (see Figure 2), the total dynamic impedance of the circuit is given by:
|z'| = ∆V
|z | 1 + R1
R2 .
∆I , which is approximately equal to KA
(
(
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PARAMETER MEASUREMENT INFORMATION
VKA
Input
Input
VKA
IKA
IKA
R1
VI(ref)
R2
Figure 1. Test Circuit for V(KA) = Vref
II(ref)
VI(ref)
ǒ
Ǔ
VKA + VI(ref) 1 ) R1 ) II(ref)
R2
R1
Figure 2. Test Circuit for V(KA) > Vref
Input
VKA
Ioff
Figure 3. Test Circuit for Ioff
4
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TYPICAL CHARACTERISTICS
Data at high and low temperatures are applicable only within the recommended operating free-air temperature
ranges of the various devices.
REFERENCE VOLTAGE
vs
FREE-AIR TEMPERATURE
REFERENCE CURRENT
vs
FREE-AIR TEMPERATURE
2.5
2.52
IKA = 10 mA
R1 = 10 kΩ
R2 = ∞
2.51
2.5
2.49
2.48
− 50
2
I I(ref) − Reference Current − µ A
VI(ref) − Reference Voltage − V
VI(ref) = VKA
IKA = 10 mA
0
− 25
25
50
75
100
1.5
1
0.5
0
− 50
125
− 25
TA − Free-Air Temperature − °C
0
25
50
75
100
TA − Free-Air Temperature − °C
Figure 4.
125
Figure 5.
CATHODE CURRENT
vs
CATHODE VOLTAGE
CATHODE CURRENT
vs
CATHODE VOLTAGE
150
800
VKA = VI(ref)
TA = 25°C
VKA = VI(ref)
TA = 25°C
600
I KA − Cathode Current − µ A
I KA − Cathode Current − mA
100
50
0
− 50
200
0
− 100
− 150
−3
400
−2
0
1
−1
VKA − Cathode Voltage − V
2
3
− 200
−2
−1
0
1
2
3
4
VKA − Cathode Voltage − V
Figure 6.
Figure 7.
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TYPICAL CHARACTERISTICS (continued)
RATIO OF DELTA REFERENCE VOLTAGE TO
DELTA CATHODE VOLTAGE
vs
FREE-AIR TEMPERATURE
OFF-STATE CATHODE CURRENT
vs
FREE-AIR TEMPERATURE
0.35
VKA = 36 V
VI(ref) = 0
−0.85
VKA = 3 V to 36 V
−0.95
0.3
∆V I(ref) /∆V KA − mV/V
I KA(off) − Off-State Cathode Current − µ A
0.4
0.25
0.2
0.15
0.1
0.05
0
−50
−1.05
−1.15
−1.25
−1.35
− 25
0
25
50
100
75
125
−1.45
−50
TA − Free-Air Temperature − °C
− 25
0
25
50
75
100
125
TA − Free-Air Temperature − °C
Figure 8.
Figure 9.
EQUIVALENT INPUT-NOISE VOLTAGE
vs
FREQUENCY
260
Hz
IO = 10 mA
TA = 25°C
Vn − Equivalent Input-Noise Voltage − nV/
240
220
200
180
160
140
120
100
10
100
1k
10 k
100 k
f − Frequency − Hz
Figure 10.
6
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TL1431-SP
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SLVSB44 – JULY 2012
APPLICATION INFORMATION
A.
R should provide cathode current ≥1 mA to the TL1431 at minimum V(BATT).
V(BATT)
R
V(BATT)
VO
R1
0.1%
VI(ref)
VO
Von ≈ 2 V
Voff ≈ V(BATT)
TL1431
R2
0.1%
Input
TL1431
VIT = 2.5 V
VO + ǒ1 ) R1ǓVI(ref)
R2
GND
Figure 16. Shunt Regulator
A.
Figure 17. Single-Supply Comparator With
Temperature-Compensated Threshold
R should provide cathode current ≥1 mA to the TL1431 at minimum V(BATT).
V(BATT)
V(BATT)
R
In
µA7805
2N2222
Out
VO
30 Ω
2N2222
TL1431
0.01 µF
R1
TL1431
R2
4.7 kΩ
VO
R1
0.1%
R2
0.1%
ǒ
Ǔ
ǒ
VO + 1 ) R1 VI(ref)
R2
Ǔ
V + 1 ) R1 V I(ref)
R2
Min V = VI(ref) + 5 V
Figure 18. Precision High-Current Series Regulator
A.
Common
Figure 19. Output Control of a Three-Terminal
Fixed Regulator
Refer to the stability boundary conditions in Figure 15 to determine allowable values for C.
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R
V(BATT)
V(BATT)
VO
VO
R1
R1
TL1431
C
R2
R2
TL1431
ǒ
ǒ
Figure 20. Higher-Current Shunt Regulator
A.
Ǔ
Vtrip + 1 ) R1 VI(ref)
R2
Ǔ
VO + 1 ) R1 VI(ref)
R2
Figure 21. Crowbar
Rb should provide cathode current ≥1 mA to the TL1431.
In
V(BATT)
V(BATT)
Out
VO = 5 V
VO = 5 V, 1.5 A, 0.5%
LM317
Rb
8.2 kΩ
Adjust
TL1431
243 Ω
0.1%
27.4 kΩ
0.1%
TL1431
243 Ω
0.1%
27.4 kΩ
0.1%
Figure 22. Precision 5-V, 1.5-A, 0.5% Regulator
Figure 23. 5-V Precision Regulator
12 V
6.8 kΩ
VCC
5 V +0.5%
TL1431
10 kΩ
−
10 kΩ
0.1%
10 kΩ
0.1%
+
X
Not
Used
TL598
Feedback
Figure 24. PWM Converter With 0.5% Reference
A.
8
Select R3 and R4 to provide the desired LED intensity and cathode current ≥1 mA to the TL1431.
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SLVSB44 – JULY 2012
680 Ω
R3
V(BATT)
12 V
R1B
R1A
TL1431
R4
2 kΩ
R
TL1431
R2A
TL1431
R2B
On
C
Off
ǒ
Ǔ
High Limit + ǒ1 ) R1AǓV I(ref)
R2A
Low Limit + 1 ) R1B V I(ref)
R2B
LED on When
Low Limit < V(BATT) < High Limit
Delay + R
Figure 25. Voltage Monitor
C
I
12 V
I (12 V) * V
I(ref)
Figure 26. Delay Timer
RCL 0.1%
V(BATT)
IO
V(BATT)
IO
R1
TL1431
TL1431
RS
0.1%
V
I(ref)
) IKA
IO +
R CL
V
R1 +
(BATT)
ǒ Ǔ
I
O
h FE
V
)I
IO +
KA
Figure 27. Precision Current Limiter
I(ref)
RS
Figure 28. Precision Constant-Current Sink
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PACKAGE OPTION ADDENDUM
www.ti.com
5-Oct-2011
PACKAGING INFORMATION
Orderable Device
5962-9962001VPA
Status
(1)
ACTIVE
Package Type Package
Drawing
CDIP
JG
Pins
Package Qty
8
1
Eco Plan
TBD
(2)
Lead/
Ball Finish
A42
MSL Peak Temp
(3)
Samples
(Requires Login)
N / A for Pkg Type
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
OTHER QUALIFIED VERSIONS OF TL1431-SP :
• Catalog: TL1431
• Automotive: TL1431-Q1
• Enhanced Product: TL1431-EP
Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com
5-Oct-2011
• Military: TL1431M
NOTE: Qualified Version Definitions:
• Catalog - TI's standard catalog product
• Automotive - Q100 devices qualified for high-reliability automotive applications targeting zero defects
• Enhanced Product - Supports Defense, Aerospace and Medical Applications
• Military - QML certified for Military and Defense Applications
Addendum-Page 2
MECHANICAL DATA
MCER001A – JANUARY 1995 – REVISED JANUARY 1997
JG (R-GDIP-T8)
CERAMIC DUAL-IN-LINE
0.400 (10,16)
0.355 (9,00)
8
5
0.280 (7,11)
0.245 (6,22)
1
0.063 (1,60)
0.015 (0,38)
4
0.065 (1,65)
0.045 (1,14)
0.310 (7,87)
0.290 (7,37)
0.020 (0,51) MIN
0.200 (5,08) MAX
Seating Plane
0.130 (3,30) MIN
0.023 (0,58)
0.015 (0,38)
0°–15°
0.100 (2,54)
0.014 (0,36)
0.008 (0,20)
4040107/C 08/96
NOTES: A.
B.
C.
D.
E.
All linear dimensions are in inches (millimeters).
This drawing is subject to change without notice.
This package can be hermetically sealed with a ceramic lid using glass frit.
Index point is provided on cap for terminal identification.
Falls within MIL STD 1835 GDIP1-T8
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
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