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TLV3691
SBOS694A – DECEMBER 2013 – REVISED NOVEMBER 2015
TLV3691 0.9-V to 6.5-V, Nanopower Comparator
1 Features
3 Description
•
•
The TLV3691 offers a wide supply range, low
quiescent current 150 nA (maximum), and rail-to-rail
inputs. All of these features come in industry-standard
and extremely small packages, making this device an
excellent choice for low-voltage and low-power
applications for portable electronics and industrial
systems.
1
•
•
•
•
•
•
Low Quiescent Current: 75 nA
Wide Supply:
– 0.9 V to 6.5 V
– ±0.45 V to ±3.25 V
MicroPackages: DFN-6 (1 mm × 1 mm), 5-Pin
SC70
Input Common-Mode Range Extends 100 mV
Beyond Both Rails
Response Time: 24 µs
Low Input Offset Voltage: ±3 mV
Push-Pull Output
Industrial Temperature Range:
–40°C to 125°C
Available as a single channel, the low-power, wide
supply, and temperature range makes this device
flexible enough to handle almost any application from
consumer to industrial. The TLV3691 is available in
SC70-5 and 1-mm × 1-mm DFN-6 packages. This
device is specified for operation across the expanded
industrial temperature range of –40°C to 125°C.
Device Information(1)
PART NUMBER
2 Applications
•
•
•
•
•
TLV3691
Overvoltage and Undervoltage Detection
Window Comparators
Overcurrent Detection
Zero-Crossing Detection
System Monitoring:
– Smart Phones
– Tablets
– Industrial Sensors
– Portable Medical
PACKAGE
BODY SIZE (NOM)
SC70 (5)
1.25 mm × 2.00 mm
X2SON (6)
1.00 mm × 1.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Nano-Power Operation
160
125ƒC
Quiescent Current (nA)
140
120
100
-40ƒC
80
60
25ƒC
40
20
VS = 0.9 V
0
0.5
1.5
2.5
3.5
4.5
Supply Voltage (V)
5.5
6.5
C001
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.
TLV3691
SBOS694A – DECEMBER 2013 – REVISED NOVEMBER 2015
www.ti.com
Table of Contents
1
2
3
4
5
6
7
Features ..................................................................
Applications ...........................................................
Description .............................................................
Revision History.....................................................
Pin Configuration and Functions .........................
Specifications.........................................................
1
1
1
2
3
4
6.1
6.2
6.3
6.4
6.5
6.6
6.7
4
4
4
4
5
6
7
Absolute Maximum Ratings ......................................
ESD Ratings ............................................................
Recommended Operating Conditions.......................
Thermal Information ..................................................
Electrical Characteristics...........................................
Switching Characteristics ..........................................
Typical Characteristics ..............................................
Detailed Description ............................................ 12
7.1 Overview ................................................................. 12
7.2 Functional Block Diagram ....................................... 12
7.3 Feature Description................................................. 12
7.4 Device Functional Modes........................................ 12
8
Application and Implementation ........................ 13
8.1 Application Information............................................ 13
8.2 Typical Application ................................................. 16
9 Power Supply Recommendations...................... 18
10 Layout................................................................... 19
10.1 Layout Guidelines ................................................. 19
10.2 Layout Example .................................................... 19
11 Device and Documentation Support ................. 20
11.1
11.2
11.3
11.4
11.5
11.6
Device Support......................................................
Documentation Support ........................................
Community Resources..........................................
Trademarks ...........................................................
Electrostatic Discharge Caution ............................
Glossary ................................................................
20
20
20
20
20
21
12 Mechanical, Packaging, and Orderable
Information ........................................................... 21
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Original (December 2013) to Revision A
•
2
Page
Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section ................................................................................................. 1
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SBOS694A – DECEMBER 2013 – REVISED NOVEMBER 2015
5 Pin Configuration and Functions
DCK Package
5-Pin SC70
Top View
IN+
1
GND
2
IN-
3
DPF Package
6-Pin X2SON
Top View
5
4
VCC
IN+
1
6
VCC
GND
2
5
NC
IN-
3
4
OUT
OUT
Pin Functions
PIN
NAME
I/O
DESCRIPTION
X2SON
SC70
GND
2
2
—
IN+
1
1
I
Noninverting input
IN–
3
3
I
Inverting input
NC
5
—
—
No internal connection
OUT
4
4
O
Output (push-pull)
VCC
6
5
I
Positive power supply
Ground
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TLV3691
SBOS694A – DECEMBER 2013 – REVISED NOVEMBER 2015
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6 Specifications
6.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted)
(1)
MIN
MAX
UNIT
7
V
Supply voltage
Signal input terminals
Voltage
(2)
(V–) – 0.5
Current (2)
Output short circuit (3)
–55
(2)
(3)
mA
mA
150
Junction, TJ
150
Storage, Tstg
(1)
V
±10
Continuous
Operating, TA
Temperature
(V+) + 0.5
–65
°C
150
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended
Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
Input terminals are diode-clamped to the power-supply rails. Input signals that can swing more than 0.5 V beyond the supply rails should
be current-limited to 10 mA or less.
Short-circuit to ground, one comparator per package.
6.2 ESD Ratings
VALUE
V(ESD)
(1)
(2)
Electrostatic discharge
Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all
pins (1)
±2500
Charged device model (CDM), per JEDEC specification JESD22C101, all pins (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
over operating free-air temperature range (unless otherwise noted)
MIN
NOM
MAX
UNIT
Power supply voltage
0.9
6.5
V
Ambient Temperature, TA
–40
125
°C
6.4 Thermal Information
TLV3691
THERMAL METRIC
(1)
DCK (SC70)
DPF (X2SON)
5 PINS
6 PINS
UNIT
252.4
°C/W
RθJA
Junction-to-ambient thermal resistance
297.4
RθJCtop
Junction-to-case (top) thermal resistance
109.3
93.9
°C/W
RθJB
Junction-to-board thermal resistance
74.4
192.8
°C/W
ψJT
Junction-to-top characterization parameter
3
3
°C/W
ψJB
Junction-to-board characterization parameter
73.6
203.8
°C/W
RθJCbot
Junction-to-case (bottom) thermal resistance
N/A
N/A
°C/W
(1)
4
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report, SPRA953.
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6.5 Electrical Characteristics
At TA = 25°C, VS = 0.9 V to 6.5 V, VCM = VS/2 and CL = 15 pF, unless otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
±3
±15
mV
±22
mV
OFFSET VOLTAGE
TA = 25°C
VOS
Input offset voltage
VHYS
Hysteresis
dVOS/dT
Input offset voltage drift
TA = –40°C to 125°C
±70
µV/°C
PSRR
Power-supply rejection ratio
TA = –40°C to 125°C
2000
µV/V
TA = –40°C to 125°C
17
mV
INPUT VOLTAGE RANGE
VCM
Common-mode voltage range
TA = –40°C to 125°C
Hysteresis
(V–) – 0.1
(V+) + 0.1
±17
V
mV
INPUT BIAS CURRENT
IB
Input bias current
IOS
Input offset current
CLOAD
Capacitive load drive
TA = 25°C
30
100
pA
20
nA
TA = –40°C to 125°C
8
pA
See Typical Characteristics
OUTPUT
IO = 2.5 mA, input overdrive ≥ 50 mV,
VS = 6.5 V
155
IO = 2.5 mA, input overdrive ≥ 50 mV,
VS = 6.5 V, TA = –40°C to 125°C
VOH
Voltage output swing from upper rail
IO ≤ 100 µA, input overdrive ≥ 50 mV,
VS = 6.5 V
6
IO ≤ 100 µA, input overdrive ≥ 50 mV,
VS = 6.5 V, TA = –40°C to 125°C
IO ≤ 100 µA, input overdrive ≥ 50 mV,
VS = 0.9 V
70
IO ≤ 100 µA, input overdrive ≥ 50 mV,
VS = 0.9 V, TA = –40°C to 125°C
IO = 2.5 mA, input overdrive ≥ 50 mV,
VS = 6.5 V
155
IO = 2.5 mA, input overdrive ≥ 50 mV,
VS = 6.5 V, TA = –40°C to 125°C
VOL
Voltage output swing from lower rail
IO ≤ 100 µA, input overdrive ≥ 50 mV,
VS = 6.5 V
6
IO ≤ 100 µA, input overdrive ≥ 50 mV,
VS = 6.5 V, TA = –40°C to 125°C
IO ≤ 100 µA, input overdrive ≥ 50 mV,
VS = 0.9 V
35
IO ≤ 100 µA, input overdrive ≥ 50 mV,
VS = 0.9 V, TA = –40°C to 125°C
ISC
165
mV
220
mV
10
mV
20
mV
75
mV
80
mV
165
mV
220
mV
10
mV
20
mV
40
mV
45
mV
Short circuit sink current
VS = 6.5 V, see Typical Characteristics
42
mA
Short circuit source current
VS = 6.5 V, see Typical Characteristics
35
mA
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SBOS694A – DECEMBER 2013 – REVISED NOVEMBER 2015
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Electrical Characteristics (continued)
At TA = 25°C, VS = 0.9 V to 6.5 V, VCM = VS/2 and CL = 15 pF, unless otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
6.5
V
75
150
nA
200
nA
POWER SUPPLY
VS
IQ
Specified voltage range
0.9
Quiescent current (per channel)
TA = 25°C
TA = –40°C to 125°C
TEMPERATURE RANGE
Specified range
–40
125
°C
Operating range
–55
150
°C
Storage range
–65
150
°C
MAX
UNIT
6.6 Switching Characteristics
At TA = 25°C, VS = 0.9 V to 6.5 V, VCM = VS/2 and CL = 15 pF, unless otherwise noted.
PARAMETER
tPHL
TEST CONDITIONS
High-to-low
Propagation delay time
tPLH
Low-to-high
TYP
VS = 6.5 V, Input overdrive = 50 mV
32
VS = 0.9 V, Input overdrive = 50 mV
45
VS = 6.5 V, Input overdrive = 100 mV
24
VS = 0.9 V, Input overdrive = 100 mV
35
VS = 6.5 V, Input overdrive = 50 mV
32
VS = 0.9 V, Input overdrive = 50 mV
40
VS = 6.5 V, Input overdrive = 100 mV
24
VS = 0.9 V, Input overdrive = 100 mV
28
tR
Rise time
Input overdrive = 100 mV
tF
Fall time
Input overdrive = 100 mV
6
MIN
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330
µs
ns
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6.7 Typical Characteristics
At TA = 25°C, VS = 0.9 V to 6.5 V, and input overdrive = 100 mV, unless otherwise noted.
160
10
9
125ƒC
140
+ Bias Current (6.5 V)
Input Bias Current (nA)
Quiescent Current (nA)
8
120
100
-40ƒC
80
60
25ƒC
40
7
± Bias Current (6.5 V)
6
5
4
3
2
1
20
0
VS = 0.9 V
0
-1
0.5
1.5
2.5
3.5
4.5
5.5
6.5
Supply Voltage (V)
±50
Figure 1. Quiescent Current vs Supply Voltage
VOH
75
100
125
C006
Figure 2. Input Bias Current vs Temperature
VOH
-40
-40°C
125ƒC
VOUT (V)
0.2
-40ƒC
0
-0.2
-40ƒC
25
25°C
2
125°C
125
0.4
-40
-40°C
3
25
25°C
0.6
VOUT (V)
50
4
0.8
125ƒC
125°C
125
1
125ƒC
0
125ƒC
±1
-0.4
±2
-0.6
-40ƒC
-0.8
VOL
-1
0.1
-40ƒC
±3
VS = ±0.45 V
0
0.3
VS = ±3.25V
VOL
±4
0.2
IOUT (mA)
0
10
20
30
40
50
IOUT (mA)
C011
VS = 0.9 V
C011
VS = 6.5 V
Figure 3. Output Voltage vs Output Current
Figure 4. Output Voltage vs Output Current
1000
60
VS = 0.9 V
Sourcing
VS = 6.5 V
600
Short Circuit Current (mA)
Short Circuit Current ( A)
25
Temperature (ƒC)
1
800
0
±25
C001
400
200
0
±200
±400
±600
±800
Sourcing
40
20
0
±20
±40
Sinking
Sinking
±1000
±60
±50
±25
0
25
50
75
100
Temperature (ƒC)
125
±50
±25
VS = 0.9 V
0
25
50
75
100
Temperature (ƒC)
C005
125
C003
VS = 6.5 V
Figure 5. Short Circuit Current vs Temperature
Figure 6. Short Circuit Current vs Temperature
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Typical Characteristics (continued)
At TA = 25°C, VS = 0.9 V to 6.5 V, and input overdrive = 100 mV, unless otherwise noted.
140
140
Propagation Delay H-L
Propagation Delay H-L
120
Propagation Delay L-H
Propagation Delay ( s)
Propagation Delay ( s)
120
100
80
VOD = 50 mV
60
40
20
Propagation Delay L-H
100
80
VOD = 50 mV
60
40
20
VS = 0.9 V
0
0
100
200
300
400
Input Overdrive (mV)
0
200
C008
Propagation Delay H-L (s)
0.9-V Supply, Overdrive = 100 mV
6.5-V Supply, Overdrive = 50 mV
6.5-V Supply, Overdrive = 100 mV
100p
1n
10n
100n
Output Capacitive Load (F)
6.5-V Supply, Overdrive = 50 mV
6.5-V Supply, Overdrive = 100 mV
10p
100p
1n
10n
Output Voltage
Output Voltage
tPLH = 45 s
Input Voltage
VS = 0.9 V, CL = 20 pF
Time (6 s/div)
Time (6 s/div)
C023
Overdrive = 50 mV
C024
VS = 0.9 V
Figure 11. Propagation Delay (TPLH)
8
Output Voltage (200 mV/div)
Output Voltage (200 mV/div)
VS = 0.9 V, CL = 20 pF
Input Voltage (100 mV/div)
Overdrive = 50 mV
tPLH = 40 s
C018
Figure 10. Propagation Delay (TPHL) vs Capacitive Load
Overdrive = 50 mV
Input Voltage
100n
Output Capacitive Load (F)
C017
Figure 9. Propagation Delay (TPLH) vs Capacitive Load
VS = 0.9 V
1000
0.9-V Supply, Overdrive = 50 mV
0.9-V Supply, Overdrive = 100 mV
Input Voltage (100 mV/div)
800
Figure 8. Propagation Delay vs Input Overdrive
1m
0.9-V Supply, Overdrive = 50 mV
Propagation Delay L-H (s)
600
VS = 6.5 V
Figure 7. Propagation Delay vs Input Overdrive
10p
400
Input Overdrive (mV)
C009
VS = 0.9 V
1m
VS = 6.5 V
0
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Overdrive = 50 mV
Figure 12. Propagation Delay (TPHL)
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Typical Characteristics (continued)
At TA = 25°C, VS = 0.9 V to 6.5 V, and input overdrive = 100 mV, unless otherwise noted.
Output Voltage
tPLH = 32 s
Input Voltage
Output Voltage (2 V/div)
tPLH = 32 s
Output Voltage (2 V/div)
Input Voltage
Input Voltage (100 mV/div)
Overdrive = 50 mV
Input Voltage (100 mV/div)
Overdrive = 50 mV
Output Voltage
VS = 6.5 V, CL = 20 pF
VS = 6.5 V, CL = 20 pF
Time (4 s/div)
Time (4 s/div)
C013
VS = 6.5 V
Overdrive = 50 mV
C014
VS = 6.5 V
Figure 13. Propagation Delay (TPLH)
Figure 14. Propagation Delay (TPHL)
Overdrive = 100 mV
Output Voltage
VS = 0.9 V, CL = 20 pF
Output Voltage
Output Voltage (200 mV/div)
tPLH = 28 s
Output Voltage (200 mV/div)
Input Voltage
Input Voltage (100 mV/div)
Overdrive = 100 mV
Input Voltage (100 mV/div)
Overdrive = 50 mV
tPLH = 35 s
Input Voltage
VS = 0.9 V, CL = 20 pF
Time (4 s/div)
Time (6 s/div)
C025
VS = 0.9 V,
Overdrive = 100 mV
C026
VS = 0.9 V
Figure 15. Propagation Delay (TPLH)
Figure 16. Propagation Delay (TPHL)
Overdrive = 100 mV
Output Voltage
tPLH = 24 s
Input Voltage
Output Voltage (2 V/div)
tPLH = 24 s
Output Voltage (2 V/div)
Input Voltage
Input Voltage (100 mV/div)
Overdrive = 100 mV
Input Voltage (100 mV/div)
Overdrive = 100 mV
Output Voltage
VS = 6.5 V, CL = 20 pF
VS = 6.5 V, CL = 20 pF
Time (4 s/div)
Time (4 s/div)
C015
VS = 6.5 V
Overdrive = 100 mV
C016
VS = 6.5 V
Figure 17. Propagation Delay (TPLH)
Overdrive = 100 mV
Figure 18. Propagation Delay (TPHL)
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Typical Characteristics (continued)
At TA = 25°C, VS = 0.9 V to 6.5 V, and input overdrive = 100 mV, unless otherwise noted.
40
VS Voltage
tPHL
30
Voltage (1 V/div)
Propagation Delay ( s)
35
25
20
15
tTURN-ON = 200 s
tPLH
10
5
VS = 6.5 V
0
-50
-25
0
25
50
75
100
Time (40 s/div)
125
Temperature (ƒC)
C029
C010
Figure 19. Propagation Delay vs Temperature
Figure 20. Start-Up Time
45
10
Offset Voltage (mV)
C019
VS = 0.9 V
VS = 6.5 V
Figure 21. Offset Voltage Production Distribution
Figure 22. Offset Voltage Production Distribution
15
15
8 Typical Units Shown
VS = 0.9 V
12
8 Typical Units Shown
VS = 6.5 V
12
9
Offset Voltage (mV)
9
Offset Voltage (mV)
16
Offset Voltage (mV)
C020
6
3
0
±3
±6
6
3
0
±3
±6
±9
±9
±12
±12
±15
±15
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
Common-Mode Voltage (V)
0.8
0.9
1
-1
0
1
2
3
4
Common-Mode Voltage (V)
C028
VS = 0.9 V
5
6
7
C027
VS = 6.5 V
Figure 23. Offset Voltage vs Common-Mode Voltage
10
14
12
8
10
6
4
2
0
-2
5
0
16
14
12
8
10
6
4
2
0
-2
-4
-6
-8
-10
-12
0
-14
5
15
-4
10
20
-6
15
25
-8
20
30
-10
25
35
-12
30
-14
35
Distribution Taken From 1000 Comparators
VS = 6.5 V
40
-16
Percentage of Comparators (%)
Distribution Taken From 1000 Comparators
VS = 0.9 V
-16
Percentage of Comparators (%)
45
40
VOUT Voltage
VS = 6.5 V
VOD = 100 mV
Figure 24. Offset Voltage vs Common-Mode Voltage
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Typical Characteristics (continued)
At TA = 25°C, VS = 0.9 V to 6.5 V, and input overdrive = 100 mV, unless otherwise noted.
10
Hysteresis Voltage (mV)
32
30
28
26
24
22
20
18
16
0
14
5
12
32
30
28
26
24
22
20
18
16
14
12
8
10
6
4
0
2
5
15
8
10
20
10
15
25
6
20
30
4
25
Distribution Taken From 1000 Comparators
VS = 6.5 V
2
30
35
0
Percentage of Comparators (%)
35
40
Distribution Taken From 1000 Comparators
VS = 0.9 V
0
Percentage of Comparators (%)
40
Hysteresis Voltage (mV)
C021
VS = 0.9 V
C022
VS = 6.5 V
Figure 25. Hysteresis Production Distribution
Figure 26. Hysteresis Production Distribution
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7 Detailed Description
7.1 Overview
The TLV3691 is a nano-power comparator with push-pull output. Operating from 0.9 V to 6.5 V and consuming a
maximum quiescent current of only 200 nA over the temperature range from –40°C to 125°C, the TLV3691 is
ideally suited for portable and industrial applications. The TLV3691 is available in the 5-pin SC70 and 6-pin DFN
packages.
7.2 Functional Block Diagram
VCC
IN+
+
IN-
±
OUT
Bias
Power-on-reset
GND
7.3 Feature Description
The TLV3691 features a nano-power comparator capable of operating at low voltages. The TLV3691 features a
rail-to-rail input stage capable of operating up to 100 mV beyond each power supply rail. The TLV3691 also
features a push-pull output stage with internal hysteresis.
7.4 Device Functional Modes
The TLV3691 has a single functional mode and is operational when the power supply voltage is greater than
0.9 V. The maximum power supply voltage for the TLV3691 is 6.5 V.
7.4.1 Nano-Power
The TLV3691 features nano-power operation. With a maximum of 150 nA of operating current at 25°C, the
TLV3691 is ideally suited for portable and battery powered applications. With a maximum of 200 nA of operating
current over the temperature range from -40°C to 125°C, the TLV3691 is also ideally suited for industrial
applications and is a must have in every designer's toolbox.
7.4.2 Rail-to-Rail Inputs
The TLV3691 features an input stage capable of operating up to –100 mV beyond ground and 100 mV beyond
the positive supply voltage, allowing for ease of use and flexible design options. Internal hysteresis of 17 mV
(typical) allows for operation in noisy environments without the need for additional external components.
7.4.3 Push-Pull Output
The TLV3691 features a push-pull output, eliminating the need for an external pullup resistor and allows for
nano-power operation across all operating conditions.
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8 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.
8.1 Application Information
The TLV3691 comparators feature rail-to-rail inputs and outputs on supply voltages as low as 0.9 V. The pushpull output stage is optimal for reduced power budget applications and features no shoot-through current. Low
minimum supply voltages, common-mode input range beyond supply rails, and a typical supply current of 75 nA
make the TLV3691 an excellent candidate for battery-operated and portable, handheld designs.
8.1.1 Comparator Inputs
Voltage (1 V/div)
The TLV3691 is a rail-to-rail input comparator, with an input common-mode range that exceeds the supply rails
by 100 mV for both positive and negative supplies. The device is designed to prevent phase inversion when the
input pins exceed the supply voltage. Figure 27 shows the device response when input voltages exceed the
supply, resulting in no phase inversion.
Output Voltage
Input Voltage
Time (2 ms/div)
C030
Figure 27. No Phase Inversion: Comparator Response to Input Voltage (Propagation Delay Included)
8.1.2 External Hysteresis
The device hysteresis transfer curve is shown in Figure 28. This curve is a function of three components: VTH,
VOS, and VHYST.
• VTH is the actual set voltage or threshold trip voltage.
• VOS is the internal offset voltage between VIN+ and VIN–. This voltage is added to VTH to form the actual trip
point at which the comparator must respond to change output states.
• VHYST is the internal hysteresis (or trip window) that is designed to reduce comparator sensitivity to noise
(17 mV for the TLV3691).
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Application Information (continued)
VTH + VOS - (VHYST / 2)
VTH + VOS
VTH + VOS + (VHYST / 2)
Figure 28. Hysteresis Transfer Curve
8.1.2.1 Inverting Comparator With Hysteresis
The inverting comparator with hysteresis requires a three-resistor network that is referenced to the comparator
supply voltage (VCC), as shown in Figure 29. When VIN at the inverting input is less than VA, the output voltage is
high (for simplicity, assume VO switches as high as VCC). The three network resistors can be represented as R1
|| R3 in series with R2. Equation 1 defines the high-to-low trip voltage (VA1).
R2
VA1 = VCC ´
(R1 || R3) + R2
(1)
When VIN is greater than VA, the output voltage is low, very close to ground. In this case, the three network
resistors can be presented as R2 || R3 in series with R1. Use Equation 2 to define the low to high trip voltage
(VA2).
R2 || R3
VA2 = VCC ´
R1 + (R2 || R3)
(2)
Equation 3 defines the total hysteresis provided by the network.
DVA = VA1 - VA2
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Application Information (continued)
+VCC
+5 V
R1
1 MW
VIN
5V
RLOAD
100 kW
VA
VO
VA2
VA1
0V
1.67 V
R3
1 MW
R2
1 MW
VO High
+VCC
R1
VIN
3.33 V
VO Low
+VCC
R3
R1
VA1
VA2
R2
R2
R3
Figure 29. TLV3691 in an Inverting Configuration With Hysteresis
8.1.2.2 Noninverting Comparator With Hysteresis
A noninverting comparator with hysteresis requires a two-resistor network, as shown in Figure 30, and a voltage
reference (VREF) at the inverting input. When VIN is low, the output is also low. For the output to switch from low
to high, VIN must rise to VIN1. Use Equation 4 to calculate VIN1.
VREF
VIN1 = R1 ´
+ VREF
(4)
R2
When VIN is high, the output is also high. For the comparator to switch back to a low state, VIN must drop to VIN2
such that VA is equal to VREF. Use Equation 5 to calculate VIN2.
VREF (R1 + R2) - VCC ´ R1
VIN2 =
(5)
R2
The hysteresis of this circuit is the difference between VIN1 and VIN2, as shown in Equation 6.
R1
DVIN = VCC ´
R2
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Application Information (continued)
+VCC
+5 V
VREF
+2.5 V
VO
VA
VIN
RLOAD
R1
330 kW
R2
1 MW
VO High
+VCC
VO Low
VIN1
R2
R1
VA = VREF
VA = VREF
R1
R2
5V
VO
VIN2
VIN1
0V
1.675 V
3.325 V
VIN
VIN2
Figure 30. TLV3691 in a Noninverting Configuration With Hysteresis
8.1.3 Capacitive Loads
Under reasonable capacitive loads, the device maintains specified propagation delay (see Typical
Characteristics). However, excessive capacitive loading under high switching frequencies may increase supply
current, propagation delay, or induce decreased slew rate.
8.1.4 Setting the Reference Voltage
Using a stable reference when setting the transition point for the device is important. The REF3312, as shown in
Figure 31, provides a 1.25-V reference voltage with low drift and only 3.9 μA of quiescent current.
VCC
REF3312
VCC
GND
+
TLV3691
_
OUT
GND
VIN
Figure 31. Reference Voltage for the TLV3691
8.2 Typical Application
8.2.1 Window Comparator
Window comparators are commonly used to detect undervoltage and overvoltage conditions. Figure 32 illustrates
a simple window comparator circuit.
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Typical Application (continued)
VIN
V+
VTH+
+
VTH+
TLV3691
VTH-
_
V-
AND
VIN
VOUT
VOUT
V+
+
TLV3691
VTH-
_
V-
Figure 32. Window Comparator
8.2.1.1 Design Requirements
•
•
•
•
•
Alert when an input signal is less than 1.25 V
Alert when an input signal is greater than 3.3 V
Alert signal is active low
Operate from 5-V power supply
Consume less than 1 µA over the temperature range from –40°C to 125°C
8.2.1.2 Detailed Design Procedure
Configure the circuit as shown in Figure 32. Connect V+ to a 5-V power supply. Connect V- to ground. Connect
VTH- to a 1.25-V voltage source; this can be a low power voltage reference such as REF3312. Connect VTH+ to a
3.3-V voltage source; this can be a low power voltage reference such as REF3333. Apply an input voltage at VIN.
VOUT will be low when VIN is less than 1.25 V or greater than 3.3 V. VOUT will be high when VIN is in the range of
1.25 V to 3.3 V.
8.2.1.3 Application Curve
5
VOUT
VIN
VTH+
VTH-
Voltage (V)
4
3
2
1
0
0
1
2
3
4
5
VIN (V)
Figure 33. Window Comparator Results
8.2.2 Overvoltage and Undervoltage Detection
The TLV3691 can be easily configured as and overvoltage and undervoltage detection circuit. Figure 34
illustrates an overvoltage and undervoltage detection circuit. This circuit can be configured to detect the validity
of a bus voltage source. The outputs of the TLV3691 will transition low when the bus voltage is out of range.
• A bus voltage overvoltage condition is indicated when VOV is low. VOV will transition low according to
Equation 7.
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Typical Application (continued)
§
·
RA
VBUS x ¨
¸ ! VTH
© R A RB RC ¹
(7)
• A bus voltage undervoltage condition is indicated when VUV is low. VUV will transition low according to
Equation 8.
§ R A RB ·
VBUS x ¨
¸ VTH
© R A RB RC ¹
(8)
• VOV and VUV will both be high when the bus voltage is within the desired range determined by Equation 7 and
Equation 8.
RC
+
TLV3691
VUV
VTH
VBUS
+
±
±
RB
REF33xx
+
VOV
±
TLV3691
RA
Figure 34. Overvoltage and Undervoltage Detection
9 Power Supply Recommendations
The TLV3691 is specified for operation from 0.9 V to 6.5 V. Many specifications apply from –40°C to 125°C.
Parameters capable of exhibiting significant variance regarding the operating voltage or temperature are
presented in the Typical Characteristics.
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10 Layout
10.1 Layout Guidelines
Comparators are very sensitive to input noise. For best results, adhere to the following layout guidelines.
1. Use a printed-circuit-board (PCB) with a good, unbroken, low-inductance ground plane. Proper grounding
(use of a ground plane) helps maintain specified device performance.
2. To minimize supply noise, place a decoupling capacitor (0.1-μF ceramic, surface-mount capacitor) as close
as possible to VCC.
3. On the inputs and the output, keep lead lengths as short as possible to avoid unwanted parasitic feedback
around the comparator. Keep inputs away from the output.
4. Solder the device directly to the PCB rather than using a socket.
5. For slow-moving input signals, take care to prevent parasitic feedback. A small capacitor (1000 pF or less)
placed between the inputs can help eliminate oscillations in the transition region. This capacitor causes some
degradation to propagation delay when impedance is low. The topside ground plane runs between the output
and inputs.
6. The ground pin ground trace runs under the device up to the bypass capacitor, shielding the inputs from the
outputs.
10.2 Layout Example
V+
Run the input traces
as far away from
the supply lines
as possible
IN+
VIN+
To reduce oscillations in the
transition region from very
slow moving input signals, use
a low-ESR, ceramic capacitor
< 1000 pF
VIN-
GND
VCC
GND
Use low-ESR, ceramic
bypass capacitor. Place
close to device to reduce
parasitic errors
GND
IN±
OUT
VOUT
Ground (GND) plane on another layer
Figure 35. TLV3691 Layout Example
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11 Device and Documentation Support
11.1 Device Support
11.1.1 Development Support
11.1.1.1 TINA-TI™ (Free Software Download)
TINA™ is a simple, powerful, and easy-to-use circuit simulation program based on a SPICE engine. TINA-TI is a
free, fully-functional version of the TINA software, preloaded with a library of macro models in addition to a range
of both passive and active models. TINA-TI provides all the conventional dc, transient, and frequency domain
analysis of SPICE, as well as additional design capabilities.
Available as a free download from the Analog eLab Design Center, TINA-TI offers extensive post-processing
capability that allows users to format results in a variety of ways. Virtual instruments offer the ability to select
input waveforms and probe circuit nodes, voltages, and waveforms, creating a dynamic quick-start tool.
NOTE
These files require that either the TINA software (from DesignSoft™) or TINA-TI software
be installed. Download the free TINA-TI software from the TINA-TI folder.
11.1.1.2 TI Precision Designs
The TLV3691 (or similar comparators) are featured in several TI Precision Designs, available online at
http://www.ti.com/ww/en/analog/precision-designs/. TI Precision Designs are analog solutions created by TI’s
precision analog applications experts and offer the theory of operation, component selection, simulation,
complete PCB schematic and layout, bill of materials, and measured performance of many useful circuits.
11.2 Documentation Support
11.2.1 Related Documentation
For related documentation see the following:
• Circuit Board Layout Techniques, SLOA089.
• Op Amps for Everyone, SLOD006.
• Shelf-Life Evaluation of Lead-Free Component Finishes, SZZA046.
11.3 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.
11.4 Trademarks
E2E is a trademark of Texas Instruments.
TINA-TI is a trademark of Texas Instruments, Inc and DesignSoft, Inc.
TINA, DesignSoft are trademarks of DesignSoft, Inc.
All other trademarks are the property of their respective owners.
11.5 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.
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11.6 Glossary
SLYZ022 — TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.
12 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.
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PACKAGE OPTION ADDENDUM
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10-Dec-2020
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
(4/5)
(6)
TLV3691IDCKR
ACTIVE
SC70
DCK
5
3000
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 125
SIV
TLV3691IDCKT
ACTIVE
SC70
DCK
5
250
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 125
SIV
TLV3691IDPFR
ACTIVE
X2SON
DPF
6
5000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
EW
TLV3691IDPFT
ACTIVE
X2SON
DPF
6
250
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
EW
(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)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
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