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TL7702B, TL7705B, TL7733B
SLVS037N – SEPTEMBER 1989 – REVISED SEPTEMBER 2016
TL7702B, TL7733B, and TL7705B Supply-Voltage Supervisors
1 Features
•
•
•
•
•
•
•
1
3 Description
The TL7702B, TL7705B, and TL7733B are
integrated-circuit supply-voltage supervisors designed
for use as reset controllers in microcomputer and
microprocessor
systems.
The
supply-voltage
supervisor monitors the supply for undervoltage
conditions at the SENSE input. When an
undervoltage condition occurs during normal
operation, outputs RESET and RESET go active.
The TL7702BC, TL7705BC, and TL7733BC are
characterized for operation from 0°C to 70°C. The
TL7702BI,
TL7705BI,
and
TL7733BI
are
characterized for operation from –40°C to 85°C. The
TL7705BQ is characterized for operation from –40°C
to 125°C.
Device Information
(1)
PART NUMBER
TL77xxBD
TL77xxBP
PACKAGE
SOIC (8)
PDIP (8)
BODY SIZE (NOM)
4.90 mm × 3.91 mm
9.81 mm × 6.35 mm
Power-On Reset Generator
Automatic Reset Generation After Voltage Drop
RESET Output Defined From V
CC
≥
1 V
Precision Voltage Sensor
Temperature-Compensated Voltage Reference
True and Complement Reset Outputs
Externally Adjustable Pulse Duration
2 Applications
•
•
•
•
•
•
Digital Signal Processors (DSPs)
Microcontrollers (MCUs)
FPGAs, ASICs
Notebooks and Desktop computers
Set-Top Boxes
Industrial Control Systems
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Functional Block Diagram
VCC
8
Reference
Voltage 1
3
VX
R1
(see Note 1)
Reference
Voltage 2
6
+
±
5
RESET
CT
SENSE
7
RESET
+
R2
(see Note 1)
2
1
GND
4
Copyright © 2016, Texas Instruments Incorporated
REF
±
RESIN
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.
TL7702B, TL7705B, TL7733B
SLVS037N – SEPTEMBER 1989 – REVISED SEPTEMBER 2016
www.ti.com
Table of Contents
1
2
3
4
5
6
Features
..................................................................
Applications
...........................................................
Description
.............................................................
Revision History.....................................................
Pin Configuration and Functions
.........................
Specifications.........................................................
6.1
6.2
6.3
6.4
6.5
1
1
1
2
3
4
8.3 Feature Description.................................................
10
8.4 Device Functional Modes........................................
10
9
Application and Implementation
........................
11
9.1 Application Information............................................
11
9.2 Typical Application ..................................................
11
Absolute Maximum Ratings ......................................
4
ESD Ratings..............................................................
4
Recommended Operating Conditions.......................
4
Thermal Information ..................................................
4
Electrical Characteristics: TL77xxBC, TL77xxBI, and
TL7705BQ..................................................................
5
6.6 Switching Characteristics: TL77xxBC, TL77xxBI, and
TL7705BQ..................................................................
5
6.7 Typical Characteristics ..............................................
7
10 Power Supply Recommendations
.....................
13
11 Layout...................................................................
14
11.1 Layout Guidelines .................................................
14
11.2 Layout Example ....................................................
14
12 Device and Documentation Support
.................
15
12.1
12.2
12.3
12.4
12.5
12.6
Related Links ........................................................
Receiving Notification of Documentation Updates
Community Resources..........................................
Trademarks ...........................................................
Electrostatic Discharge Caution ............................
Glossary ................................................................
15
15
15
15
15
15
7
8
Parameter Measurement Information
..................
7
Detailed Description
..............................................
9
8.1 Overview ...................................................................
9
8.2 Functional Block Diagram .........................................
9
13 Mechanical, Packaging, and Orderable
Information
...........................................................
15
4 Revision History
Changes from Revision M (May 2003) to Revision N
•
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
Deleted
Ordering Information
table; see POA at the end of the data sheet...........................................................................
1
Deleted Lead temperature row ...............................................................................................................................................
4
Changed R
θJA
for D (SOIC) from 97 to 109.2 and for P (PDIP) from 85 to 51.4....................................................................
4
•
•
•
2
Submit Documentation Feedback
Copyright © 1989–2016, Texas Instruments Incorporated
Product Folder Links:
TL7702B TL7705B TL7733B
TL7702B, TL7705B, TL7733B
www.ti.com
SLVS037N – SEPTEMBER 1989 – REVISED SEPTEMBER 2016
5 Pin Configuration and Functions
D or P Package
8-Pin SOIC or PDIP
Top View
REF
RESIN
CT
GND
1
2
3
4
8
7
6
5
VCC
SENSE
RESET
RESET
Not to scale
Pin Functions
PIN
NAME
CT
GND
REF
RESET
RESET
RESIN
SENSE
VCC
NO.
3
4
1
6
5
2
7
8
I/O
O
—
O
O
O
I
I
—
DESCRIPTION
Timing capacitor input. The timing capacitor determines the time delay that the reset outputs remain
active after the voltage at the SENSE input exceeds the positive-going threshold value.
Ground
Reference voltage. See
Electrical Characteristics: TL77xxBC, TL77xxBI, and TL7705BQ
for reference
voltage output and specification.
Active high reset. See
Figure 1
for RESET function and timing.
Active low reset. See
Figure 1
for RESET function and timing.
Reset input. When the Reset Input is low, the RESET output goes low and the RESET goes high. When
the Reset Input is high, the RESET and RESET outputs are allowed to trigger based on the SENSE
voltage.
Sense input. Voltage input to be supervised. See
Figure 1
for SENSE function and timing.
Supply voltage. See
Recommended Operating Conditions
for recommended voltage input range.
Copyright © 1989–2016, Texas Instruments Incorporated
Submit Documentation Feedback
3
Product Folder Links:
TL7702B TL7705B TL7733B
TL7702B, TL7705B, TL7733B
SLVS037N – SEPTEMBER 1989 – REVISED SEPTEMBER 2016
www.ti.com
6 Specifications
6.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted)
(1)
MIN
Supply voltage
(2)
, V
CC
Input voltage, V
I
High-level output current, I
OH
(RESET)
Low-level output current, I
OL
(RESET)
Operating virtual junction temperature, T
J
Storage temperature, T
stg
(1)
(2)
–65
RESIN
SENSE
–0.3
–0.3
MAX
20
20
20
–30
30
150
150
UNIT
V
V
mA
mA
°C
°C
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.
All voltage values are with respect to the network ground terminal.
6.2 ESD Ratings
VALUE
V
(ESD)
(1)
(2)
Electrostatic discharge
Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001
(1)
Charged-device model (CDM), per JEDEC specification JESD22-C101
(2)
UNIT
V
2000
1000
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
V
CC
V
IH
V
IL
V
I
I
OH
I
OL
T
A
Supply voltage
High-level input voltage
Low-level input voltage
Input voltage
High-level output current
Low-level output current
Operating free-air temperature
RESIN
RESIN
SENSE
RESET
RESET
TL77xxBC
TL77xxBI
TL7705BQ
0
–40
–40
3.6
2
0
0
MAX
18
18
0.8
18
–20
20
70
85
125
°C
UNIT
V
V
V
V
mA
mA
6.4 Thermal Information
TL77xxB
THERMAL METRIC
R
θJA
R
θJC(top)
R
θJB
ψ
JT
ψ
JB
(1)
(2)
Junction-to-ambient thermal resistance
Junction-to-case (top) thermal resistance
Junction-to-board thermal resistance
Junction-to-top characterization parameter
Junction-to-board characterization parameter
(1) (2)
D (SOIC)
8 PINS
109.2
56
49.9
11.4
49.4
P (PDIP)
8 PINS
51.4
40.6
28.6
17.7
28.5
UNIT
°C/W
°C/W
°C/W
°C/W
°C/W
For more information about traditional and new thermal metrics, see the
Semiconductor and IC Package Thermal Metrics
application
report.
Maximum power dissipation is a function of T
J(max)
, R
θJA
, and T
A
. The maximum allowable power dissipation at any allowable ambient
temperature is P
D
= (T
J(max)
– T
A
) / R
θJA
. Operating at the absolute maximum T
J
of 150°C can affect reliability.
4
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Copyright © 1989–2016, Texas Instruments Incorporated
Product Folder Links:
TL7702B TL7705B TL7733B
TL7702B, TL7705B, TL7733B
www.ti.com
SLVS037N – SEPTEMBER 1989 – REVISED SEPTEMBER 2016
6.5 Electrical Characteristics: TL77xxBC, TL77xxBI, and TL7705BQ
over operating free-air temperature range (unless otherwise noted)
(1)
PARAMETER
V
OH
V
OL
V
REF
High-level output voltage, RESET
Low-level output voltage, RESET
Reference voltage, REF
TL7702B
TL7705B
V
IT–
Negative-going input
threshold voltage at
SENSE input
TL7733B
TL7702B
TL7705B
TL7733B
TL7702B
V
HYS
V
RES
I
I
I
OH
I
OL
I
CC
(1)
(2)
(3)
Hysteresis, SENSE
(V
IT+
– V
IT–
)
Power-up reset voltage
Input current
TL7705B
TL7733B
(3)
TEST CONDITIONS
I
OH
= –16 mA
I
OL
= 16 mA
I
ref
= –500 µA, T
A
= 25°C
T
A
= 25°C
MIN
V
CC
– 1.5
TYP
MAX
0.4
UNIT
V
V
V
2.48
2.505
4.5
3.03
2.48
2.53
2.53
4.55
3.08
2.53
4.55
3.08
10
30
10
2.58
2.555
4.6
3.13
2.58
4.65
3.16
V
T
A
= full range
(2)
4.45
3
V
CC
= 3.6 V to 18 V, T
A
= 25°C
I
OL
at RESET = 2 mA, T
A
= 25°C
V
I
= 0.4 V to V
CC
V
I
= V
REF
to 18 V
V
O
= 18 V, see
Figure 8
V
O
= 0 V, see
Figure 7
V
SENSE
= 15 V, RESIN
≥
2 V
V
CC
= 18 V, T
A
= full range
(2)
mV
1
–10
V
µA
µA
µA
µA
RESIN
SENSE, TL7702B
–0.1
–2
50
–50
High-level output current, RESET
Low-level output current, RESET
Supply current
1.8
3
3.5
All electrical characteristics are measured with 0.1-µF capacitors connected at REF, CT, and VCC to GND.
Full range is 0°C to 70°C for the C-suffix devices, –40°C to 85°C for the I-suffix devices, and –40°C to 125°C for the Q-suffix device.
This is the lowest voltage at which RESET becomes active.
6.6 Switching Characteristics: TL77xxBC, TL77xxBI, and TL7705BQ
V
CC
= 5 V, C
T
open, T
A
= 25°C, over operating free-air temperature range (unless otherwise noted)
PARAMETER
t
PLH
t
PHL
t
w
t
r
t
f
Propagation delay time from low-
level to high-level output
Propagation delay time from
high-level to low-level output
Effective pulse duration
Rise time
Fall time
FROM (INPUT)
RESIN
RESIN
RESIN
SENSE
RESET
RESET
RESET
RESET
TO (OUTPUT)
RESET
RESET
TEST CONDITIONS
See
Figure 1,
Figure 2, Figure 7
See
Figure 1,
Figure 2, Figure 8
See
Figure 9,
Figure 10
See
Figure 7,
Figure 8, Figure 1
See
Figure 7,
Figure 8, Figure 1
MIN
TYP
270
270
150
100
75
75
150
150
200
50
MAX
500
500
UNIT
ns
ns
ns
ns
ns
Copyright © 1989–2016, Texas Instruments Incorporated
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