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www.ti.com
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SLVS363B − AUGUST 2001 − REVISED SEPTEMBER 2004
TPS3103
DBV PACKAGE
(TOP VIEW)
features
ꢀ
Precision Supply Voltage Supervision
Range: 0.9 V, 1.2 V, 1.5 V, 1.6 V,
2 V, 3.3 V
1
2
3
6
5
V
DD
RESET
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High Trip Point Accuracy: 0.75%
GND
MR
PFO
PFI
Supply Current of 1.2 µA (Typ)
RESET Defined With Input Voltages as Low
as 0.4 V
4
TPS3106
DBV PACKAGE
(TOP VIEW)
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ꢀ
Power On Reset Generator With a Delay
Time of 130 ms
Push/Pull or Open-Drain RESET Outputs
SOT23-6 Package
V
1
2
3
RSTVDD
GND
6
5
DD
Temperature Range . . . −40°C to 85°C
RSTSENSE
SENSE
typical applications
4
MR
ꢀ
Applications Using Low-Power DSPs,
Microcontrollers or Microprocessors
TPS3110
DBV PACKAGE
(TOP VIEW)
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Portable/Battery-Powered Equipment
Intelligent Instruments
1
2
3
6
5
V
RESET
GND
Wireless Communication Systems
Programmable Controls
DD
WDI
Industrial Equipment
4
SENSE
MR
Notebook/Desktop Computers
Automotive Systems
typical application circuit
description
The TPS310x, TPS311x families of supervisory
3.3 V
1.6 V
circuits provide circuit initialization and timing
supervision, primarily for DSP and processor-
based systems.
V
V
V
IO
DD
core
DSP
RESET
R3
TPS3106E33DBV
During power on, RESET is asserted when the
R1
R2
supply voltage (V ) becomes higher than 0.4 V.
MR
RSTVDD
DD
Thereafter, the supervisory circuit monitors V
DD
SENSE
and keeps the RESET output active as long as
RSTSENSE
V
remains below the threshold voltage (V ). An
DD
IT
GND
GND
internal timer delays the return of the output to the
inactive state to ensure proper system reset. The
GND
delay time starts after V
has risen above the V .
DD
IT
When the V
drops below the V , the output
DD
IT
becomes active again.
All the devices of this family have a fixed-sense threshold voltage (V ) set by an internal voltage divider.
IT
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
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ꢤ ꢞꢜ ꢝꢞ ꢟ ꢠ ꢢ ꢞ ꢣ ꢧꢦ ꢤ ꢛ ꢝꢛ ꢤ ꢡ ꢢ ꢛꢞ ꢜꢣ ꢧ ꢦꢟ ꢢꢬ ꢦ ꢢꢦ ꢟ ꢠꢣ ꢞꢝ ꢀꢦꢅ ꢡ ꢣ ꢙꢜꢣ ꢢꢟ ꢥꢠ ꢦꢜꢢ ꢣ ꢣꢢ ꢡꢜ ꢪꢡꢟ ꢪ ꢭ ꢡꢟ ꢟ ꢡ ꢜꢢꢮꢫ
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Copyright 2001 − 2004 Texas Instruments Incorporated
1
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