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TPS3705-30, TPS3705-33, TPS3705-50, TPS3707-30, TPS3707-50
SLVS184E – NOVEMBER 1998 – REVISED JULY 2017
TPS370x-xx Processor Supervisory Circuits With Power-Fail
1 Features
1
3 Description
The TPS370x-xx family of microprocessor supply-
voltage supervisors provide circuit initialization and
timing supervision, primarily for DSP and processor-
based systems.
During power-on, RESET is asserted when the
supply voltage V
DD
becomes higher than 1.1 V.
Thereafter, the supply voltage supervisor monitors
V
DD
and keeps RESET active as long as V
DD
remains
below the threshold voltage V
IT+
. When the supply
voltage drops below the threshold voltage V
IT–
, the
output becomes active (low) again. No external
components are required. All the devices of this
family have a fixed-sense threshold voltage V
IT–
set
by an internal voltage divider.
The product spectrum is designed for supply voltages
of 2.5 V, 3 V, 3.3 V, and 5 V. The circuits are
available in either 8-pin MSOP or standard SOIC
packages.
The
TPS370x-xx
devices
are
characterized for operation over a temperature range
of
−40°C
to 85°C.
Device Information
(1)
PART NUMBER
TPS3705-xx,
TPS3707-xx
PACKAGE
MSOP-
PowerPAD™ (8)
SOIC (8)
BODY SIZE (NOM)
3.00 mm × 3.00 mm
3.90 mm × 4.90 mm
•
•
•
•
•
•
•
•
Power-On Reset Generator With Fixed Delay
Time of 200 ms (No External Capacitor Needed)
Precision Supply Voltage Monitor: 2.5 V, 3 V,
3.3 V, and 5 V
Pin-for-Pin Compatible With the MAX705 Through
MAX708 Series
Integrated Watchdog Time (TPS3705-xx Only)
Voltage Monitor for Power-Fail or Low-Battery
Warning
Maximum Supply Current of 50 µA
8-Pin MSOP and 8-Pin SOIC Packages
Temperature Range: –40°C to 85°C
2 Applications
•
•
•
•
•
•
•
•
Designs Using DSPs, Microcontrollers, or
Microprocessors
Industrial Equipment
Programmable Controls
Automotive Systems
Portable or Battery Powered Equipment
Intelligent Instruments
Wireless Communication Systems
Notebook or Desktop Computers
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical MSP430 Application
12 V
5V
VDD
PFO
TPS3705−50
MR
910 kΩ
WDO
PFI
WDI
120 kΩ
GND
I/O
I/O
RESET
100 nF
VDD
MSP430P112
RESET/NMI
GND
Copyright © 2016, Texas Instruments Incorporated
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.
TPS3705-30, TPS3705-33, TPS3705-50, TPS3707-30, TPS3707-50
SLVS184E – NOVEMBER 1998 – REVISED JULY 2017
www.ti.com
Table of Contents
1
2
3
4
5
6
7
Features
..................................................................
Applications
...........................................................
Description
.............................................................
Revision History.....................................................
Device Comparison Table.....................................
Pin Configuration and Functions
.........................
Specifications.........................................................
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
7.10
Absolute Maximum Ratings ......................................
ESD Ratings ............................................................
Recommended Operating Conditions.......................
Thermal Information ..................................................
Electrical Characteristics...........................................
Timing Requirements ................................................
Switching Characteristics ..........................................
Dissipation Ratings ...................................................
Timing Diagram.........................................................
Typical Characteristics ............................................
1
1
1
2
3
4
5
5
5
5
6
6
7
7
7
8
9
8.1
8.2
8.3
8.4
Overview .................................................................
Functional Block Diagram .......................................
Feature Description ................................................
Device Functional Modes........................................
11
11
11
12
9
Application and Implementation
........................
13
9.1 Application Information............................................
13
9.2 Typical Application .................................................
13
10 Power Supply Recommendations
.....................
14
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
Receiving Notification of Documentation Updates
Community Resources..........................................
Trademarks ...........................................................
Electrostatic Discharge Caution ............................
Glossary ................................................................
15
15
15
15
15
8
Detailed Description
............................................
11
13 Mechanical, Packaging, and Orderable
Information
...........................................................
15
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision D (May 2016) to Revision E
•
•
Page
Updated package body sizes in the
Device Information
table ...............................................................................................
1
Added
Receiving Notification of Documentation Updates
section ......................................................................................
15
Changes from Revision C (December 2005) to Revision D
•
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
2
Submit Documentation Feedback
Copyright © 1998–2017, Texas Instruments Incorporated
Product Folder Links:
TPS3705-30 TPS3705-33 TPS3705-50 TPS3707-30 TPS3707-50
TPS3705-30, TPS3705-33, TPS3705-50, TPS3707-30, TPS3707-50
www.ti.com
SLVS184E – NOVEMBER 1998 – REVISED JULY 2017
5 Device Comparison Table
PACKAGED DEVICES
T
A
THRESHOLD
VOLTAGE
2.63 V
2.93 V
4.55 V
–40°C to 85°C
2.25 V
2.63 V
2.93 V
4.55 V
SMALL OUTLINE (D)
TPS3705−30D
TPS3705−33D
TPS3705−50D
TPS3707−25D
TPS3707−30D
TPS3707−33D
TPS3707−50D
POWER-PAD
µ-SMALL OUTLINE
(DGN)
TPS3705−30DGN
TPS3705−33DGN
TPS3705−50DGN
TPS3707−25DGN
TPS3707−30DGN
TPS3707−33DGN
TPS3707−50DGN
MARKING DGN
PACKAGE
TIAAT
TIAAU
TIAAV
TIAAW
TIAAX
TIAAY
TIAAZ
CHIP FORM (Y)
TPS3705-30Y
TPS3705−33Y
TPS3705−50Y
TPS3707−25Y
TPS3707−30Y
TPS3707−33Y
TPS3707−50Y
Copyright © 1998–2017, Texas Instruments Incorporated
Submit Documentation Feedback
3
Product Folder Links:
TPS3705-30 TPS3705-33 TPS3705-50 TPS3707-30 TPS3707-50
TPS3705-30, TPS3705-33, TPS3705-50, TPS3707-30, TPS3707-50
SLVS184E – NOVEMBER 1998 – REVISED JULY 2017
www.ti.com
6 Pin Configuration and Functions
TPS3705-xx D Package
8-Pin SOIC
Top View
TPS3705-xx DGN Package
8-Pin MSOP-PowerPAD
Top View
MR
VDD
GND
PFI
1
2
3
4
8
7
6
5
WDO
RESET
1
2
3
4
8
7
6
5
WDI
PFO
PFI
GND
RESET
WDO
WDI
MR
PFO
VDD
TPS3707-xx D Package
8-Pin SOIC
Top View
TPS3707-xx DGN Package
8-Pin MSOP-PowerPAD
Top View
MR
VDD
GND
PFI
1
2
3
4
8
7
6
5
RESET
RESET
NC
PFO
RESET
RESET
MR
VDD
1
2
3
4
8
7
6
5
NC
PFO
PFI
GND
Pin Functions
PIN
NAME
GND
MR
NC
PFI
PFO
RESET
RESET
V
DD
WDI
WDO
TPS3705-xx
SOIC
3
1
—
4
5
7
—
2
6
8
MSOP-PowerPAD
5
3
—
6
7
1
—
4
8
2
SOIC
3
1
6
4
5
7
8
2
—
—
TPS3707-xx
MSOP-PowerPAD
5
3
8
6
7
1
2
4
—
—
—
I
—
I
O
O
O
—
I
O
Ground
Manual reset
No internal connection
Power-fail comparator input
Power-fail comparator output
Active-low reset output
Active-high reset output
Supply voltage
Watchdog timer input
Watchdog timer output
I/O
DESCRIPTION
4
Submit Documentation Feedback
Copyright © 1998–2017, Texas Instruments Incorporated
Product Folder Links:
TPS3705-30 TPS3705-33 TPS3705-50 TPS3707-30 TPS3707-50
TPS3705-30, TPS3705-33, TPS3705-50, TPS3707-30, TPS3707-50
www.ti.com
SLVS184E – NOVEMBER 1998 – REVISED JULY 2017
7 Specifications
7.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted)
(1)
MIN
Supply voltage, V
DD (2)
PFI voltage range, V
PFI
All other pins
(2)
Maximum low output current, I
OL
Maximum high output current, I
OH
Input clamp current, I
IK
(V
I
< 0 or V
I
> V
DD
)
Output clamp current, I
OK
(V
O
< 0 or V
O
> V
DD
)
Continuous total power dissipation
Soldering temperature
Operating temperature, T
A
Storage temperature, T
stg
(1)
(2)
–40
–65
–0.3
–0.3
MAX
7
V
DD
+ 0.3
7
5
–5
±20
±20
See
Dissipation Ratings
260
85
150
°C
°C
°C
UNIT
V
V
V
mA
mA
mA
mA
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 GND. For reliable operation the device must not be operated at 7 V for more than t = 1000h
continuously.
7.2 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)
±2000
±500
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.
7.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
MIN
V
DD
V
I
V
IH
V
IL
Δt/ΔV
T
A
Supply voltage
Input voltage
High-level input voltage
Low-level input voltage
Input transition rise and fall rate at MR or WDI
Operating free-air temperature
–40
2
0
0.7 × V
DD
0.3 × V
DD
100
85
NOM
MAX
6
V
DD
+ 0.3
UNIT
V
V
V
V
ns/V
°C
Copyright © 1998–2017, Texas Instruments Incorporated
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5
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TPS3705-30 TPS3705-33 TPS3705-50 TPS3707-30 TPS3707-50
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