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TPS3707-50DGNRG4 Datasheet(PDF) 1 Page - Texas Instruments

Part # TPS3707-50DGNRG4
Description  Processor Supervisory Circuits With Power-Fail
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS3707-50DGNRG4 Datasheet(HTML) 1 Page - Texas Instruments

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MR
RESET
TPS3705−50
PFI
VDD
GND
100 nF
RESET/NMI
VDD
GND
5 V
12 V
910 k
120 k
MSP430P112
PFO
WDI
WDO
I/O
I/O
Copyright © 2016, Texas Instruments Incorporated
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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
SLVS184D – NOVEMBER 1998 – REVISED MAY 2016
TPS370x-xx Processor Supervisory Circuits With Power-Fail
1
1 Features
1
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
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 VDD becomes higher than 1.1 V.
Thereafter, the supply voltage supervisor monitors
VDD and keeps RESET active as long as VDD remains
below the threshold voltage VIT+. When the supply
voltage drops below the threshold voltage VIT–, the
output becomes active (low) again. No external
components are required. All the devices of this
family have a fixed-sense threshold voltage VIT– 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
PACKAGE
BODY SIZE (NOM)
TPS3705-xx,
TPS3707-xx
MSOP-
PowerPAD™ (8)
358 mm × 335 mm
SOIC (8)
367 mm × 367 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical MSP430 Application


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