TPS3106xxx
TPS3110xxx
www.ti.com
SLVS363D – AUGUST 2001 – REVISED NOVEMBER 2006
UltraLow Supply-Current/Supply-Voltage Supervisory Circuits
FEATURES
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Precision Supply Voltage Supervision Range:
0.9 V, 1.2 V, 1.5 V, 1.6 V, 2 V, and 3.3 V
High Trip-Point Accuracy: 0.75%
Supply Current of 1.2
µA
(typical)
RESET Defined With Input Voltages as Low as
0.4 V
Power-On Reset Generator With a Delay Time
of 130 ms
Push/Pull or Open-Drain RESET Outputs
SOT23-6 Package
Package Temperature Range: –40°C to +85°C
DESCRIPTION
The TPS310x and TPS311x families of supervisory
circuits 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 0.4 V.
Thereafter, the supervisory circuit monitors V
DD
and
keeps the RESET output active as long as V
DD
remains below the threshold voltage (V
IT
). An internal
timer delays the return of the output to the inactive
state to ensure proper system reset. The delay time
starts after V
DD
has risen above V
IT
. When V
DD
drops
below V
IT
, the output becomes active again.
All the devices of this family have a fixed-sense
threshold voltage (V
IT
) set by an internal voltage
divider.
The TPS3103 and TPS3106 have an active-low,
open-drain RESET output. The TPS3110 has an
active-low push/pull RESET.
The product spectrum is designed for supply
voltages of 0.9 V up to 3.3 V. The circuits are
available in SOT23-6 packages. The TPS31xx family
is characterized for operation over a temperature
range of –40°C to +85°C.
APPLICATIONS
Applications Using Low-Power DSPs,
Microcontrollers, or Microprocessors
Portable- and Battery-Powered Equipment
Intelligent Instruments
Wireless Communication Systems
Industrial Equipment
Notebook/Desktop Computers
TPS3103
DBV PACKAGE
(TOP VIEW)
TPS3106
DBV PACKAGE
(TOP VIEW)
3.3 V
RESET
GND
MR
1
2
3
6
5
4
V
DD
PFO
PFI
RSTVDD
GND
MR
1
2
3
6
5
4
V
DD
RSTSENSE
1.6 V
V
DD
TPS3106K33DBV
R1
MR
SENSE
RSTVDD
R3
V
CORE
DSP
RESET
V
IO
SENSE
TPS3110
DBV PACKAGE
(TOP VIEW)
R2
RSTSENSE
GND
GND
RESET
GND
MR
1
2
3
6
5
4
V
DD
WDI
SENSE
GND
Typical Application Circuit
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2001–2006, Texas Instruments Incorporated
TI [ TEXAS INSTRUMENTS ]
