TI1 ATL432AIDBZR Atl43x 2.5-v low iq adjustable precision shunt regulator Datasheet

Sample &
Buy
Product
Folder
Support &
Community
Tools &
Software
Technical
Documents
Reference
Design
ATL431, ATL432
SLVSCV5C – MARCH 2015 – REVISED SEPTEMBER 2015
ATL43x 2.5-V Low Iq Adjustable Precision Shunt Regulator
1 Features
3 Description
•
•
The ATL431 and ATL432 are three-terminal
adjustable shunt regulators, with specified thermal
stability over applicable automotive, commercial, and
industrial temperature ranges. The output voltage can
be set to any value between Vref (approximately
2.5 V) and 36 V, with two external resistors. These
devices have a typical output impedance of 0.05 Ω.
Active output circuitry provides a very sharp turn-on
characteristic, making these devices excellent
replacements for Zener diodes in many applications,
such as onboard regulation, adjustable power
supplies, and switching power supplies.
1
•
•
•
•
•
Adjustable Regulated Output of 2.5 V to 36 V
Very-Low Operating Current
– IKA(min) = 35 µA (Max)
– IREF = 150 nA (Max)
Internally Compensated for Stability
– Stable With No Capacitive Load
Reference Voltage Tolerances at 25°C
– 0.5% for ATL43xB
– 1% for ATL43xA
Typical Temperature Drift
– 5 mV (–40°C to 85°C); I Version
– 6 mV (–40°C to 125°C); Q Version
Extended Cathode Current Range
35 µA to 100 mA
Low Output Impedance of 0.3 Ω (Max)
2 Applications
•
•
•
•
•
•
Secondary Side Regulation in Flyback SMPSs
Industrial, Computing, Consumer, and Portables
Adjustable Voltage and Current Referencing
Power Management
Power Isolation
Zener Replacement
The ATL43x has > 20x improvement cathode current
range over it's TL43x predecessor. It also is stable
with a wider range of load capacitance types and
values.
ATL431 and ATL432 are the exact same parts but
with different pinouts and order numbers. The
ATL43x is offered in two grades, with initial
tolerances (at 25°C) of 0.5%, 1%, for the B and A
grade, respectively. In addition, low output drift vs
temperature ensures good stability over the entire
temperature range.
The ATL43xxI devices are characterized for operation
from –40°C to 85°C, and the ATL43xxQ devices are
characterized for operation from –40°C to 125°C.
Device Information(1)
PART NUMBER
ATL431
ATL432
PACKAGE
SOT (3)
BODY SIZE (NOM)
2.90 mm × 1.60 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
Stability Region for VKA = 15.0 V
2000
VKA
Input
IKA
IKA(PA)
Vref
1000
STABLE
100
20
0.0001
0.001
0.01
0.1
CKA(PF)
1
10
D001
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
ATL431, ATL432
SLVSCV5C – MARCH 2015 – REVISED SEPTEMBER 2015
www.ti.com
Table of Contents
1
2
3
4
5
6
7
8
Features ..................................................................
Applications ...........................................................
Description .............................................................
Revision History.....................................................
Pin Configuration and Functions .........................
Specifications.........................................................
1
1
1
2
3
3
6.1
6.2
6.3
6.4
6.5
6.6
6.7
3
3
3
4
4
4
5
Absolute Maximum Ratings .....................................
ESD Ratings..............................................................
Recommended Operating Conditions.......................
Thermal Information ..................................................
Electrical Characteristics, ATL431Ax, ATL432Ax .....
Electrical Characteristics, ATL431Bx, ATL432Bx .....
Typical Characteristics ..............................................
Parameter Measurement Information .................. 9
Detailed Description ............................................ 11
8.1 Overview ................................................................. 11
8.2 Functional Block Diagram ....................................... 11
8.3 Feature Description................................................. 11
8.4 Device Functional Modes........................................ 12
9
Application and Implementation ........................ 13
9.1 Application Information............................................ 13
9.2 Typical Applications ................................................ 14
10 Power Supply Recommendations ..................... 18
11 Layout................................................................... 18
11.1 Layout Guidelines ................................................. 18
11.2 Layout Example .................................................... 18
12 Device and Documentation Support ................. 19
12.1
12.2
12.3
12.4
12.5
Related Links ........................................................
Community Resources..........................................
Trademarks ...........................................................
Electrostatic Discharge Caution ............................
Glossary ................................................................
19
19
19
19
19
13 Mechanical, Packaging, and Orderable
Information ........................................................... 19
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision B (May 2015) to Revision C
•
Page
Changed ATL432xx status from PREVIEW to PRODUCTION. ............................................................................................. 1
Changes from Revision A (April 2015) to Revision B
Page
•
Changed ATL431AQ, ATL431BI and ATL431BQ status from PREVIEW to PRODUCTION. ............................................... 1
•
Changed flyback schematic to represent a more robust design ......................................................................................... 13
•
Added flyback supply reliability recommendation................................................................................................................. 18
Changes from Original (March 2013) to Revision A
•
2
Page
Initial release of full verison. ................................................................................................................................................... 1
Submit Documentation Feedback
Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: ATL431 ATL432
ATL431, ATL432
www.ti.com
SLVSCV5C – MARCH 2015 – REVISED SEPTEMBER 2015
5 Pin Configuration and Functions
ATL431 DBZ Package
3-Pin SOT-23
Top View
CATHODE
ATL432 DBZ Package
3-Pin SOT-23
Top View
1
3
REF
ANODE
1
ANODE
3
REF
2
CATHODE
2
Pin Functions
PIN
NO.
NAME
I/O
DESCRIPTION
I/O
Shunt Current/Voltage input
ATL431x
ATL432x
CATHODE
1
2
REF
2
1
I
Threshold relative to common anode
ANODE
3
3
O
Common pin, normally connected to ground
6 Specifications
6.1 Absolute Maximum Ratings (1)
over operating free-air temperature range (unless otherwise noted)
MIN
VKA
Cathode voltage (2)
IKA
Continuous cathode current
II(ref)
Reference input current
TJ
Tstg
(1)
(2)
MAX
UNIT
40
V
–100
150
mA
–0.05
10
mA
Operating virtual junction temperature
-40
150
°C
Storage temperature
–65
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.
6.2 ESD Ratings
VALUE
V(ESD)
(1)
(2)
Electrostatic discharge
Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001 (1)
±2000
Charged-device model (CDM), per JEDEC specification JESD22-C101 (2)
±1000
UNIT
V
JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.
6.3 Recommended Operating Conditions
VKA
Cathode voltage
IKA
Cathode current
TA
Operating free-air temperature
MIN
MAX
Vref
36
V
mA
.035
100
"I" Grade
–40
85
"Q" Grade
–40
125
Submit Documentation Feedback
Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: ATL431 ATL432
UNIT
°C
3
ATL431, ATL432
SLVSCV5C – MARCH 2015 – REVISED SEPTEMBER 2015
www.ti.com
6.4 Thermal Information
ATL43xx
THERMAL METRIC (1)
DBZ (SOT-23)
UNIT
3 PINS
RθJA
Junction-to-ambient thermal resistance
331.8
°C/W
RθJC(top)
Junction-to-case (top) thermal resistance
106.5
°C/W
RθJB
Junction-to-board thermal resistance
64.6
°C/W
ψJT
Junction-to-top characterization parameter
4.9
°C/W
ψJB
Junction-to-board characterization parameter
62.9
°C/W
(1)
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report, SPRA953.
6.5 Electrical Characteristics, ATL431Ax, ATL432Ax
over recommended operating conditions, TA = 25°C (unless otherwise noted)
PARAMETER
Vref
Reference voltage
TEST CIRCUIT
Figure 22
TEST CONDITIONS
MIN
TYP
MAX
UNIT
2475
2500
2525
mV
ATL43xAI; TA =
-40°C to 85°C
5
15
ATL43xAQ; TA =
-40°C to 125°C
6
34
ΔVKA = 10 V − Vref
–0.4
–2.7
ΔVKA = 36 V − 10 V
–0.1
–2
VKA = Vref, IKA = 1 mA
Deviation of reference input
voltage over full temperature
range, see section
Figure 22
Ratio of change in reference
ΔVref / ΔVKA voltage to the change in
cathode voltage
Figure 23
IKA = 1 mA
Iref
Reference input current
Figure 23
IKA = 1 mA, R1 = 10 kΩ, R2 = ∞
30
150
nA
II(dev)
Deviation of reference input
current over full temperature
range, see section
Figure 23
IKA = 1 mA, R1 = 10 kΩ, R2 = ∞
20
50
nA
Imin
Minimum cathode current for
regulation
Figure 22
Figure 5
VKA = Vref
20
35
µA
Ioff
Off-state cathode current
Figure 24
VKA = 36 V, Vref = 0
0.05
0.2
µA
|zKA|
Dynamic impedance, see
section
Figure 22
VKA = Vref, f ≤ 1 kHz,
IKA = 1 mA to 100 mA
0.05
0.3
Ω
VI(dev)
VKA = Vref,
IKA = 1 mA,
mV
mV/V
6.6 Electrical Characteristics, ATL431Bx, ATL432Bx
over recommended operating conditions, TA = 25°C (unless otherwise noted)
PARAMETER
MIN
TYP
MAX
UNIT
2487
2500
2512
mV
ATL43xBI; TA =
–40°C to 85°C
5
15
ATL43xBQ; TA =
–40°C to 125°C
6
34
ΔVKA = 10 V − Vref
–0.4
–2.7
ΔVKA = 36 V − 10 V
–0.1
–2
IKA = 1 mA, R1 = 10 kΩ, R2 = ∞
30
150
nA
Figure 23
IKA = 1 mA, R1 = 10 kΩ, R2 = ∞
20
50
nA
Minimum cathode current for
regulation
Figure 22
Figure 5
VKA = Vref
20
35
µA
Ioff
Off-state cathode current
Figure 24
VKA = 36 V, Vref = 0
0.05
0.2
µA
|zKA|
Dynamic impedance, see
section
Figure 22
VKA = Vref, f ≤ 1 kHz, IKA = 1 mA to 100 mA
0.05
0.3
Ω
Vref
Reference voltage
VI(dev)
TEST CIRCUIT
TEST CONDITIONS
Figure 22
VKA = Vref, IKA = 1 mA
Deviation of reference input
voltage over full temperature
range, see section
Figure 22
VKA = Vref, IKA = 1
mA
ΔVref /
ΔVKA
Ratio of change in reference
voltage to the change in
cathode voltage
Figure 23
IKA = 1 mA
Iref
Reference input current
Figure 23
II(dev)
Deviation of reference input
current over full temperature
range, see section
Imin
4
Submit Documentation Feedback
mV
mV/V
Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: ATL431 ATL432
ATL431, ATL432
www.ti.com
SLVSCV5C – MARCH 2015 – REVISED SEPTEMBER 2015
6.7 Typical Characteristics
Data at high and low temperatures are applicable only within the recommended operating free-air temperature ranges of the
various devices.
0.04
2520
Vref = 2485mV
Vref = 2500mV
Vref = 2504mV
2515
2510
0.032
IREF (PA)
Vref (mV)
2505
2500
2495
0.024
0.016
2490
2485
0.008
2480
2475
-40
-20
0
20
40
60
TA (qC)
80
100
120
0
-40
140
-20
0
20
40
60
TA (qC)
80
100
120
140
IKA=1mA
Figure 2. Reference Current vs Free-Air Temperature
Figure 1. Reference Voltage vs Free-Air Temperature
100
40
TA = -40qC
TA = 25qC
TA = 85qC
TA = 125qC
80
60
30
40
IKA (PA)
IKA (mA)
20
0
-20
20
-40
10
-60
-80
-100
-1.5
0
-1
-0.5
0
0.5
1
1.5
VKA = VREF (V)
2
2.5
3
0
0.5
1
D001
1.5
2
VKA = VREF (V)
2.5
3
D001
Figure 4. Cathode Current vs Cathode Voltage
Figure 3. Cathode Current vs Cathode Voltage
0.2
30
0.16
25
IOFF (PA)
IKA (PA)
Ik(min)
20
15
10
2.3
0.12
0.08
0.04
2.35
2.4
2.45
VKA = VREF (V)
2.5
2.55
Figure 5. Cathode Current vs Cathode Voltage
0
-40
-20
0
20
40
60
TA (qC)
80
100
120
140
Figure 6. Off-State Cathode Current vs Free-Air Temperature
Submit Documentation Feedback
Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: ATL431 ATL432
5
ATL431, ATL432
SLVSCV5C – MARCH 2015 – REVISED SEPTEMBER 2015
www.ti.com
Typical Characteristics (continued)
Data at high and low temperatures are applicable only within the recommended operating free-air temperature ranges of the
various devices.
-0.1
0
-0.5
-0.15
-1
-0.2
'Vref/'Vka (mV)
-1.5
'Vref (mV)
-2
-2.5
-3
-3.5
-4
Vref to 10V
10V to 36V
-0.25
-0.3
-0.35
-0.4
-4.5
-5
-0.45
-5.5
-0.5
-40
-6
0
5
10
15
20
Vka (V)
25
30
35
40
IKA=1mA
-20
0
20
40
60
80
Temperature (qC)
100
140
D001
IKA=1mA
Figure 7. Delta Reference Voltage vs Cathode Voltage
Figure 8. Delta Reference Voltage vs Cathode Voltage
900
150
Gain
Phase
130
840
110
Gain (dB) & Phase (q)
Noise (nV/—Hz)
120
780
720
660
90
70
50
30
10
-10
-30
600
10
100
1000
Frequency (Hz)
-50
1000
10000
10000
100000
1000000
Freq (kHz)
D001
Figure 25 used for this measurement.
IKA = 1 mA
IKA=1mA
Figure 10. Small-Signal Voltage Amplification vs Frequency
Figure 9. Noise Voltage
0.1
1.2
1.1
0.08
Output Impedance (:)
Output Impedance (:)
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.06
0.04
0.02
0.2
0.1
0
100
1000
10000
Frequency (Hz)
100000
1000000
Figure 26 used for this measurement.
-20
0
20
40
60
TA (qC)
80
100
120
140
Figure 26 used for this measurement.
Figure 11. Output Impedance vs Frequency
6
0
-40
Figure 12. DC Output Impedance vs Temperature
Submit Documentation Feedback
Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: ATL431 ATL432
ATL431, ATL432
www.ti.com
SLVSCV5C – MARCH 2015 – REVISED SEPTEMBER 2015
Typical Characteristics (continued)
Data at high and low temperatures are applicable only within the recommended operating free-air temperature ranges of the
various devices.
2000
1000
Unstable
IKA(PA)
STABLE
100
STABLE
20
0.0001
0.001
ESR < 20 mΩ
IKA = 100 µA
0.01
0.1
CKA(PF)
1
10
D001
Figure 27 used to verify stability.
Figure 28 used for this measurement.
Figure 13. Pulse Response
Figure 14. Low IKA (VKA = 2.5 V) Stability Boundary
Conditions all ATL43xx Devices
2000
2000
1000
1000
Unstable
Unstable
STABLE
IKA(PA)
IKA(PA)
STABLE
100
100
STABLE
20
0.0001
0.001
ESR < 20 mΩ
0.01
0.1
CKA(PF)
1
STABLE
20
0.0001
10
0.001
D001
Figure 27 used to verify stability.
ESR < 20 mΩ
Figure 15. Low IKA (VKA = 5.0 V) Stability Boundary
Conditions all ATL43xx Devices
0.01
0.1
CKA(PF)
1
10
D001
Figure 27 used to verify stability.
Figure 16. Low IKA (VKA = 10.0 V) Stability Boundary
Conditions all ATL43xx Devices
100
2000
IKA(mA)
IKA(PA)
1000
STABLE
Unstable
10
100
Stable
20
0.0001
0.001
ESR < 20mΩ
0.01
0.1
CKA(PF)
1
10
1
0.0001
0.001
D001
Figure 27 used to verify stability.
Figure 17. Low IKA (VKA = 15.0 V) Stability Boundary
Conditions all ATL43xx Devices
ESR < 20 mΩ
0.01
0.1
CKA(uF)
1
10
D001
Figure 27 used to verify stability.
Figure 18. High IKA (VKA = 2.5 V) Stability Boundary
Conditions all ATL43xx Devices
Submit Documentation Feedback
Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: ATL431 ATL432
7
ATL431, ATL432
SLVSCV5C – MARCH 2015 – REVISED SEPTEMBER 2015
www.ti.com
Typical Characteristics (continued)
Data at high and low temperatures are applicable only within the recommended operating free-air temperature ranges of the
various devices.
100
100
IKA(mA)
IKA(mA)
Stable
10
Stable
10
Unstable
1
0.0001
0.001
ESR < 20 mΩ
0.01
0.1
CKA(uF)
1
Unstable
1
0.0001
10
0.001
0.01
0.1
CKA(uF)
D001
Figure 27 used to verify stability.
ESR < 20 mΩ
Figure 19. High IKA (VKA = 5.0 V) Stability Boundary
Conditions all ATL43xx Devices
1
10
D001
Figure 27 used to verify stability.
Figure 20. High IKA (VKA = 10.0 V) Stability Boundary
Conditions all ATL43xx Devices
IKA(mA)
100
10
1
0.0001
Stable
0.001
ESR < 20 mΩ
0.01
0.1
CKA(uF)
1
10
D001
Figure 27 used to verify stability.
Figure 21. High IKA (VKA = 15.0 V) Stability Boundary Conditions all ATL43xx Devices
8
Submit Documentation Feedback
Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: ATL431 ATL432
ATL431, ATL432
www.ti.com
SLVSCV5C – MARCH 2015 – REVISED SEPTEMBER 2015
7 Parameter Measurement Information
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 αVref is defined as:
αVref is positive or negative, depending on whether minimum Vref or maximum Vref, respectively, occurs at the
lower temperature.
|zKA| =
∆VKA
∆I
The dynamic impedance is defined as:
When the device is operating with two external resistors (see Figure 23), the total dynamic impedance of the
KA
circuit is given by:
|z'| = ∆V
∆I
which is approximately equal to
VKA
Input
(
|zKA| 1 + R1
R2
(
Input
VKA
IKA
IKA
Vref
R1
Iref
R2
Vref
Figure 23. Test Circuit for VKA > Vref
Figure 22. Test Circuit for VKA = Vref
Input
R1 ö
æ
VKA = Vref ç 1 +
÷ + Iref × R1
R2 ø
è
OUTPUT
VKA
Ioff
10NŸ
IK
2.5NŸ
10µF
+
5.0V
10NŸ
-
GND
Figure 24. Test Circuit for Ioff
Figure 25. Test Circuit for Phase and Gain Measurement
Submit Documentation Feedback
Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: ATL431 ATL432
9
ATL431, ATL432
SLVSCV5C – MARCH 2015 – REVISED SEPTEMBER 2015
www.ti.com
Parameter Measurement Information (continued)
>250Ÿ
100Ÿ
OUTPUT
IK
R1 = 10NŸ
+
CL
IK
-
R2
Vbat
100Ÿ
+
>250Ÿ
IK
GND
+
Vbat
CL
-
Figure 26. Test Circuit for Reference Impedance (ZKA)
Figure 27. Test Circuit for Stability Boundary Conditions
25NŸ
OUTPUT
IK
Pulse
Generator
F = 100kHz
50 Ÿ
GND
Figure 28. Test Circuit for Pulse Response
10
Submit Documentation Feedback
Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: ATL431 ATL432
ATL431, ATL432
www.ti.com
SLVSCV5C – MARCH 2015 – REVISED SEPTEMBER 2015
8 Detailed Description
8.1 Overview
ATL43x is a low power counterpart to TL431 and TLV431, having lower minimum cathode current (Ik(min) = 35 µA
vs 0.1/1.0 mA). Like TL431, ATL43x is used in conjunction with it's key components to behave as a single
voltage reference, error amplifier, voltage clamp or comparator with integrated reference.
ATL43x can be operated and adjusted to cathode voltages from 2.5 V to 36 V, making this part optimum for a
wide range of end equipments in industrial, auto, telecom and computing. In order for this device to behave as a
shunt regulator or error amplifier, > 35 µA (Imin(max)) must be supplied in to the cathode pin. Under this
condition, feedback can be applied from the Cathode and Ref pins to create a replica of the internal reference
voltage.
Various reference voltage options can be purchased with initial tolerances (at 25°C) of 0.5% and 1.0%. These
reference options are denoted by B (0.5%) and A (1.0%) after the ATL43x.
The ATL43xxI devices are characterized for operation from –40°C to 85°C, and the ATL43xxQ devices are
characterized for operation from –40°C to 125°C.
8.2 Functional Block Diagram
CATHODE
REF
+
Vref
ANODE
8.3 Feature Description
ATL43x consists of an internal reference and amplifier that outputs a sink current based on the difference
between the reference pin and the virtual internal pin. The sink current is produced by an internal Darlington pair.
When operated with enough voltage headroom (≥ 2.5 V) and cathode current (IKA), ATL43x forces the reference
pin to 2.5 V. However, the reference pin can not be left floating, as it needs Iref ≥ 0.1 µA (please see the
Functional Block Diagram). This is because the reference pin is driven into an NPN, which needs base current in
order operate properly.
When feedback is applied from the Cathode and Reference pins, ATL43x behaves as a Zener diode, regulating
to a constant voltage dependent on current being supplied into the cathode. This is due to the internal amplifier
and reference entering the proper operating regions. The same amount of current needed in the above feedback
situation must be applied to this device in open loop, servo or error amplifying implementations in order for it to
be in the proper linear region giving ATL43x enough gain.
Unlike many linear regulators, ATL43x is internally compensated to be stable without an output capacitor
between the cathode and anode; however, if it is desired to use an output capacitor Figure 14 through Figure 21
can be used as a guide to assist in choosing the correct capacitor to maintain stability.
Submit Documentation Feedback
Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: ATL431 ATL432
11
ATL431, ATL432
SLVSCV5C – MARCH 2015 – REVISED SEPTEMBER 2015
www.ti.com
8.4 Device Functional Modes
8.4.1 Open Loop (Comparator)
When the cathode/output voltage or current of ATL43x is not being fed back to the reference/input pin in any
form, this device is operating in open loop. With such high gain in this configuration, ATL43x is typically used as
a comparator. Due to the integrated reference, the ATL43x allows users to monitor a certain level of a single
signal.
8.4.2 Closed Loop
When the cathode/output voltage or current of ATL43x is being fed back to the reference/input pin in any form,
this device is operating in closed loop. The majority of applications involving ATL43x use it in this manner to
regulate a fixed voltage or current. The feedback enables this device to behave as an error amplifier, computing
a portion of the output voltage and adjusting it to maintain the desired regulation. This is done by relating the
output voltage back to the reference pin in a manner to make it equal to the internal reference voltage, which can
be accomplished via resistive or direct feedback.
12
Submit Documentation Feedback
Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: ATL431 ATL432
ATL431, ATL432
www.ti.com
SLVSCV5C – MARCH 2015 – REVISED SEPTEMBER 2015
9 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
9.1 Application Information
Figure 29 shows the ATL43x used in a 24-V isolated flyback supply. The output of the regulator, plus the forward
voltage drop of the optocoupler LED (2.5 + 0.7 = 3.2 V), determine the minimum voltage that can be regulated in
an isolated supply configuration. Regulated voltage as low as 5.0 Vdc is possible in the topology shown in
Figure 29.
The 431 family of devices are prevalent in these applications, being designers go to choice for secondary side
regulation. Due to this prevalence, this section will further go on to explain operation and design in both states of
ATL43x that this application will see, open loop (Comparator + Vref) and closed loop (Shunt Regulator).
ATL43x's key benefit in isolated supplies is the no load power savings gained by the > 20x decrease in IKmin from
TL431. More information about this and other benefits can be found in the application note Designing with the
"Advanced" TL431, ATL431 SLVA685. Further information about system stability and using a ATL43x device for
compensation can be found in the application note Compensation Design With TL431 for UCC28600, SLUA671.
VI
120 V
Vo=24 V
Gate Drive
VCC
Ibias
Controller
VFB
Current
Sense
GND
ATL431
Figure 29. Flyback With Isolation Using ATL43x
as Voltage Reference and Error Amplifier
Submit Documentation Feedback
Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: ATL431 ATL432
13
ATL431, ATL432
SLVSCV5C – MARCH 2015 – REVISED SEPTEMBER 2015
www.ti.com
9.2 Typical Applications
9.2.1 Comparator With Integrated Reference (Open Loop)
Vsup
Rsup
Vout
CATHODE
R1
VL
RIN
REF
VIN
+
R2
2.5V
ANODE
Figure 30. Comparator Application Schematic
9.2.1.1 Design Requirements
For this design example, use the parameters listed in Table 1 as the input parameters.
Table 1. Design Parameters
DESIGN PARAMETER
EXAMPLE VALUE
Input voltage range
0 V to 3.3 V
Input resistance
100 kΩ
Supply voltage
5V
Cathode current (IK)
50 µA
Output voltage level
About 2 V to Vsup
Logic input thresholds VIH/VIL
1.5 V / 0.8 V
9.2.1.2 Detailed Design Procedure
When using ATL43x as a comparator with reference, determine the following:
• Input voltage range
• Reference voltage accuracy
• Output logic input high and low level thresholds
• Current source resistance
9.2.1.2.1 Basic Operation
In the configuration shown in Figure 30 ATL43x will behave as a comparator, comparing the Vref pin voltage to
the internal virtual reference voltage. When provided a proper cathode current (Ik), ATL43x will have enough
open loop gain to provide a quick response. With the ATL43x's max operating current (Imin) being 35 µA and up
to 40 µA over temperature, operation below that could result in low gain, leading to a slow response.
14
Submit Documentation Feedback
Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: ATL431 ATL432
ATL431, ATL432
www.ti.com
SLVSCV5C – MARCH 2015 – REVISED SEPTEMBER 2015
9.2.1.2.2 Overdrive
Slow or inaccurate responses can also occur when the reference pin is not provided enough overdrive voltage.
This is the amount of voltage that is higher than the internal virtual reference. The internal virtual reference
voltage will be within the range of 2.5 V ±(0.5% or 1.0%) depending on which version is being used.
The more overdrive voltage provided, the faster the ATL43x will respond.
For applications where ATL43x is being used as a comparator, it is best to set the trip point to greater than the
positive expected error (that is, +1.0% for the A version). For fast response, setting the trip point to > 10% of the
internal Vref should suffice. Figure 31 shows the transition from VOH to VOL based on the input voltage and can be
used as a guide for selecting the overdrive voltage.
For minimal voltage drop or difference from Vin to the ref pin, it is recommended to use an input resistor < 1 MΩ
to provide Iref.
9.2.1.2.3 Output Voltage and Logic Input Level
In order for ATL43x to properly be used as a comparator, the logic output must be readable by the receiving logic
device. This is accomplished by knowing the input high and low level threshold voltage levels, typically denoted
by VIH and VIL.
As seen in Figure 31, ATL43x's output low level voltage in open-loop/comparator mode is ~2 V, which is
sufficient for some ≥ 5.0 V supplied logic. However, would not work for 3.3 V and 1.8 V supplied logic. In order to
accommodate this, a resistive divider can be tied to the output to attenuate the output voltage to a voltage legible
to the receiving low voltage logic device.
ATL43x's output high voltage is approximately Vsup due to ATL43x being open-collector. If Vsup is much higher
than the receiving logic's maximum input voltage tolerance, the output must be attenuated to accommodate the
outgoing logic's reliability.
When using a resistive divider on the output, be sure to make the sum of the resistive divider (R1 and R2 in
Figure 30) is much greater than Rsup in order to not interfere with ATL43x's ability to pull close to Vsup when
turning off.
9.2.1.2.3.1 Input Resistance
ATL43x requires an input resistance in this application in order to source the reference current (Iref) needed from
this device to be in the proper operating regions while turning on. The actual voltage seen at the ref pin will be:
Vref = Vin – Iref × Rin
(1)
Because Iref can be as high as 0.15 µA, TI recommends to use a resistance small enough that will mitigate the
error that Iref creates from Vin. Also, the input resistance must be set high enough as to not surpass the absolute
maximum of 10 mA.
VOUT (V)
9.2.1.3 Application Curve
5.5
5.25
5
4.75
4.5
4.25
4
3.75
3.5
3.25
3
2.75
2.5
2.25
2
1.75
1.5
2
2.1
2.2
2.3
2.4
2.5 2.6
VIN (V)
2.7
2.8
2.9
3
D001
RIN = 100 kΩ
VSUP = 5.0 V
RSUP = 10 kΩ
Figure 31. Open Loop (Comparator Mode) VOUT vs VIN
Submit Documentation Feedback
Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: ATL431 ATL432
15
ATL431, ATL432
SLVSCV5C – MARCH 2015 – REVISED SEPTEMBER 2015
www.ti.com
9.2.2 Shunt Regulator/Reference
RSUP
VSUP
VO = ( 1 +
R1
0.1%
R2
) VREF
CATHODE
REF
VREF
R1
R2
0.1%
ATL431
CL
ANODE
Figure 32. Shunt Regulator Schematic
9.2.2.1 Design Requirements
For this design example, use the parameters listed in Table 2 as the input parameters.
Table 2. Design Parameters
DESIGN PARAMETER
EXAMPLE VALUE
Reference initial accuracy
1.0%
Supply voltage
48 V
Cathode current (IK)
50 µA
Output voltage level
2.5 V to 36 V
Load capacitance
1 nF
Feedback resistor values and
accuracy (R1 and R2)
10 kΩ
9.2.2.2 Detailed Design Procedure
When using ATL43x as a Shunt Regulator, determine the following:
• Input voltage range
• Temperature range
• Total accuracy
• Cathode current
• Reference initial accuracy
• Output capacitance
9.2.2.2.1
Programming Output/Cathode Voltage
In order to program the cathode voltage to a regulated voltage a resistive bridge must be shunted between the
cathode and anode pins with the mid point tied to the reference pin. This can be seen in Figure 32, with R1 and
R2 being the resistive bridge. The cathode/output voltage in the shunt regulator configuration can be
approximated by the equation shown in Figure 32. The cathode voltage can be more accurately determined by
taking in to account the cathode current:
VO = (1 + R1 / R2) × Vref – Iref × R1
(2)
For this equation to be valid, ATL43x must be fully biased so that it has enough open loop gain to mitigate any
gain error. This can be done by meeting the Imin spec denoted in Electrical Characteristics, ATL431Ax, ATL432Ax
table.
9.2.2.2.2 Total Accuracy
When programming the output above unity gain (VKA = Vref), ATL43x is susceptible to other errors that may effect
the overall accuracy beyond Vref. These errors include:
•
•
16
R1 and R2 accuracies
VI(dev) - Change in reference voltage over temperature
Submit Documentation Feedback
Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: ATL431 ATL432
ATL431, ATL432
www.ti.com
•
•
SLVSCV5C – MARCH 2015 – REVISED SEPTEMBER 2015
ΔVref / ΔVKA - Change in reference voltage to the change in cathode voltage
|zKA| - Dynamic impedance, causing a change in cathode voltage with cathode current
Worst case cathode voltage can be determined taking all of the variables in to account. Application note
SLVA445 assists designers in setting the shunt voltage to achieve optimum accuracy for this device.
9.2.2.2.3 Stability
Though ATL43x is stable with no capacitive load, the device that receives the shunt regulator's output voltage
could present a capacitive load that is within the ATL43x region of stability, shown in Figure 14 through
Figure 21. Also, designers may use capacitive loads to improve the transient response or for power supply
decoupling.
Figure 14 through Figure 21 should be used as a guide for capacitor selection and compensation. It is
characterized using ceramic capacitors with very-low ESR. When it is desirable to use a capacitor within the
unstable region, higher ESR capacitors can be used to stabilize ATL43x or an external series resistance can be
added. For more information and guidance on ESR values, please refer to the application note Designing with
the "Advanced" TL431, ATL431 SLVA685.
Unlike TL431, the stability boundary is characterized and determined with resistors 250 Ω and greater. Which is
more suitable for low cathode current applications.
9.2.2.3 Application Curves
Figure 33. ATL43x Start-up Response IKA = 50 µA
Figure 34. ATL43x Start-up Response IKA = 1 mA
Submit Documentation Feedback
Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: ATL431 ATL432
17
ATL431, ATL432
SLVSCV5C – MARCH 2015 – REVISED SEPTEMBER 2015
www.ti.com
10 Power Supply Recommendations
When using ATL43x in a flyback supply (see Figure 29) it is often common for designers to place the bias
resistor between the Anode of the Opto-Coupler and the output voltage (VO = 24 V). However, this makes
ATL43x more susceptible to EOS/ESD damage. Therefore, it is recommended to place the bias resistor between
the Cathodes of the Opto-Coupler and ATL43x, as shown in Figure 29. For further explanation, please see
Designing with the "Advanced" TL431, ATL431 SLVA685.
When using ATL43x as a Linear Regulator to supply a load, designers will typically use a bypass capacitor on
the output/cathode pin. Be sure that the capacitance is within the stability criteria shown in Figure 14 through
Figure 21.
In order to not exceed the maximum cathode current, be sure that the supply voltage is current limited. Also, be
sure to limit the current being driven into the Ref pin, as not to exceed it's absolute maximum rating.
For applications shunting high currents, pay attention to the cathode and anode trace lengths, adjusting the width
of the traces to have the proper current density.
11 Layout
11.1 Layout Guidelines
Place decoupling capacitors as close to the device as possible. Use appropriate widths for traces when shunting
high currents to avoid excessive voltage drops.
11.2 Layout Example
DBZ
(TOP VIEW)
Rref
Vin
REF
1
Rsup
Vsup
ANODE
3
CATHODE
2
GND
CL
GND
Figure 35. DBZ Layout Example
18
Submit Documentation Feedback
Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: ATL431 ATL432
ATL431, ATL432
www.ti.com
SLVSCV5C – MARCH 2015 – REVISED SEPTEMBER 2015
12 Device and Documentation Support
12.1 Related Links
The table below lists quick access links. Categories include technical documents, support and community
resources, tools and software, and quick access to sample or buy.
Table 3. Related Links
PARTS
PRODUCT FOLDER
SAMPLE & BUY
TECHNICAL
DOCUMENTS
TOOLS &
SOFTWARE
SUPPORT &
COMMUNITY
ATL431
Click here
Click here
Click here
Click here
Click here
ATL432
Click here
Click here
Click here
Click here
Click here
12.2 Community Resources
The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective
contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of
Use.
TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration
among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help
solve problems with fellow engineers.
Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and
contact information for technical support.
12.3 Trademarks
E2E is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.
12.4 Electrostatic Discharge Caution
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
12.5 Glossary
SLYZ022 — TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.
13 Mechanical, Packaging, and Orderable Information
The following pages include mechanical, packaging, and orderable information. This information is the most
current data available for the designated devices. This data is subject to change without notice and revision of
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.
Submit Documentation Feedback
Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: ATL431 ATL432
19
PACKAGE OPTION ADDENDUM
www.ti.com
12-Oct-2015
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
Lead/Ball Finish
MSL Peak Temp
(2)
(6)
(3)
Op Temp (°C)
Device Marking
(4/5)
ATL431AIDBZR
ACTIVE
SOT-23
DBZ
3
3000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 85
(ZCKS ~ ZCR3)
ATL431AQDBZR
ACTIVE
SOT-23
DBZ
3
3000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
(ZCLS ~ ZCS3)
ATL431BIDBZR
ACTIVE
SOT-23
DBZ
3
3000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 85
(ZCMS ~ ZCT3)
ATL431BQDBZR
ACTIVE
SOT-23
DBZ
3
3000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
(ZCJS ~ ZCU3)
ATL432AIDBZR
ACTIVE
SOT-23
DBZ
3
3000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 85
(ZCNS ~ ZCV3)
ATL432AQDBZR
ACTIVE
SOT-23
DBZ
3
3000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
(ZCOS ~ ZCW3)
ATL432BIDBZR
ACTIVE
SOT-23
DBZ
3
3000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 85
(ZCPS ~ ZCX3)
ATL432BQDBZR
ACTIVE
SOT-23
DBZ
3
3000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
(ZCQS ~ ZCY3)
(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.
Addendum-Page 1
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
(4)
12-Oct-2015
There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5)
Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
(6)
Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish
value exceeds the maximum column width.
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.
Addendum-Page 2
PACKAGE MATERIALS INFORMATION
www.ti.com
24-Feb-2016
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
Package Package Pins
Type Drawing
SPQ
Reel
Reel
A0
Diameter Width (mm)
(mm) W1 (mm)
B0
(mm)
K0
(mm)
P1
(mm)
ATL431AIDBZR
SOT-23
DBZ
3
3000
180.0
8.4
ATL431AQDBZR
SOT-23
DBZ
3
3000
180.0
ATL431BIDBZR
SOT-23
DBZ
3
3000
180.0
ATL431BQDBZR
SOT-23
DBZ
3
3000
ATL432AIDBZR
SOT-23
DBZ
3
ATL432AQDBZR
SOT-23
DBZ
ATL432BIDBZR
SOT-23
DBZ
ATL432BQDBZR
SOT-23
DBZ
3.15
2.77
1.22
4.0
8.0
Q3
8.4
3.15
2.77
1.22
4.0
8.0
Q3
8.4
3.15
2.77
1.22
4.0
8.0
Q3
180.0
8.4
3.15
2.77
1.22
4.0
8.0
Q3
3000
180.0
8.4
3.15
2.77
1.22
4.0
8.0
Q3
3
3000
180.0
8.4
3.15
2.77
1.22
4.0
8.0
Q3
3
3000
180.0
8.4
3.15
2.77
1.22
4.0
8.0
Q3
3
3000
180.0
8.4
3.15
2.77
1.22
4.0
8.0
Q3
Pack Materials-Page 1
W
Pin1
(mm) Quadrant
PACKAGE MATERIALS INFORMATION
www.ti.com
24-Feb-2016
*All dimensions are nominal
Device
Package Type
Package Drawing
Pins
SPQ
Length (mm)
Width (mm)
Height (mm)
ATL431AIDBZR
SOT-23
DBZ
3
3000
202.0
201.0
28.0
ATL431AQDBZR
SOT-23
DBZ
3
3000
202.0
201.0
28.0
ATL431BIDBZR
SOT-23
DBZ
3
3000
202.0
201.0
28.0
ATL431BQDBZR
SOT-23
DBZ
3
3000
202.0
201.0
28.0
ATL432AIDBZR
SOT-23
DBZ
3
3000
202.0
201.0
28.0
ATL432AQDBZR
SOT-23
DBZ
3
3000
202.0
201.0
28.0
ATL432BIDBZR
SOT-23
DBZ
3
3000
202.0
201.0
28.0
ATL432BQDBZR
SOT-23
DBZ
3
3000
202.0
201.0
28.0
Pack Materials-Page 2
IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other
changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest
issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and
complete. All semiconductor products (also referred to herein as “components”) are sold subject to TI’s terms and conditions of sale
supplied at the time of order acknowledgment.
TI warrants performance of its components to the specifications applicable at the time of sale, in accordance with the warranty in TI’s terms
and conditions of sale of semiconductor products. Testing and other quality control techniques are used to the extent TI deems necessary
to support this warranty. Except where mandated by applicable law, testing of all parameters of each component is not necessarily
performed.
TI assumes no liability for applications assistance or the design of Buyers’ products. Buyers are responsible for their products and
applications using TI components. To minimize the risks associated with Buyers’ products and applications, Buyers should provide
adequate design and operating safeguards.
TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or
other intellectual property right relating to any combination, machine, or process in which TI components or services are used. Information
published by TI regarding third-party products or services does not constitute a license to use such products or services or a warranty or
endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the
third party, or a license from TI under the patents or other intellectual property of TI.
Reproduction of significant portions of TI information in TI data books or data sheets is permissible only if reproduction is without alteration
and is accompanied by all associated warranties, conditions, limitations, and notices. TI is not responsible or liable for such altered
documentation. Information of third parties may be subject to additional restrictions.
Resale of TI components or services with statements different from or beyond the parameters stated by TI for that component or service
voids all express and any implied warranties for the associated TI component or service and is an unfair and deceptive business practice.
TI is not responsible or liable for any such statements.
Buyer acknowledges and agrees that it is solely responsible for compliance with all legal, regulatory and safety-related requirements
concerning its products, and any use of TI components in its applications, notwithstanding any applications-related information or support
that may be provided by TI. Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which
anticipate dangerous consequences of failures, monitor failures and their consequences, lessen the likelihood of failures that might cause
harm and take appropriate remedial actions. Buyer will fully indemnify TI and its representatives against any damages arising out of the use
of any TI components in safety-critical applications.
In some cases, TI components may be promoted specifically to facilitate safety-related applications. With such components, TI’s goal is to
help enable customers to design and create their own end-product solutions that meet applicable functional safety standards and
requirements. Nonetheless, such components are subject to these terms.
No TI components are authorized for use in FDA Class III (or similar life-critical medical equipment) unless authorized officers of the parties
have executed a special agreement specifically governing such use.
Only those TI components which TI has specifically designated as military grade or “enhanced plastic” are designed and intended for use in
military/aerospace applications or environments. Buyer acknowledges and agrees that any military or aerospace use of TI components
which have not been so designated is solely at the Buyer's risk, and that Buyer is solely responsible for compliance with all legal and
regulatory requirements in connection with such use.
TI has specifically designated certain components as meeting ISO/TS16949 requirements, mainly for automotive use. In any case of use of
non-designated products, TI will not be responsible for any failure to meet ISO/TS16949.
Products
Applications
Audio
www.ti.com/audio
Automotive and Transportation
www.ti.com/automotive
Amplifiers
amplifier.ti.com
Communications and Telecom
www.ti.com/communications
Data Converters
dataconverter.ti.com
Computers and Peripherals
www.ti.com/computers
DLP® Products
www.dlp.com
Consumer Electronics
www.ti.com/consumer-apps
DSP
dsp.ti.com
Energy and Lighting
www.ti.com/energy
Clocks and Timers
www.ti.com/clocks
Industrial
www.ti.com/industrial
Interface
interface.ti.com
Medical
www.ti.com/medical
Logic
logic.ti.com
Security
www.ti.com/security
Power Mgmt
power.ti.com
Space, Avionics and Defense
www.ti.com/space-avionics-defense
Microcontrollers
microcontroller.ti.com
Video and Imaging
www.ti.com/video
RFID
www.ti-rfid.com
OMAP Applications Processors
www.ti.com/omap
TI E2E Community
e2e.ti.com
Wireless Connectivity
www.ti.com/wirelessconnectivity
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
Copyright © 2016, Texas Instruments Incorporated
Similar pages