JBL MS-8, Service Manual, Page: 60 / 110

1
FEATURES
DESCRIPTION
APPLICATIONS
(TOP VIEW)
RESET
GND
MR
V
DD
PFI
TPS3103
DBV PACKAGE
PFO
3
2
4
6
1
5
(TOP VIEW)
RSTVDD
GND
MR
V
DD
SENSE
TPS3106
DBV PACKAGE
RSTSENSE
3
2
4
6
1
5
(TOP VIEW)
RESET
GND
MR
V
DD
SENSE
TPS3110
DBV PACKAGE
WDI
3
2
4
6
1
5
Typical Application Circuit
TPS3106K33DBV
V
DD
RSTVDD
RSTSENSE
GND
SENSE
R1
R2
GND
V
CORE
V
IO
RESET
R3
DSP
3.3 V
1.6 V
GND
MR
TPS3103xxx
TPS3106xxx
TPS3110xxx
SLVS363E – AUGUST 2001 – REVISED SEPTEMBER 2007
www.ti.com
UltraLow Supply-Current/Supply-Voltage Supervisory Circuits
2
•
Precision Supply Voltage Supervision Range:
0.9 V, 1.2 V, 1.5 V, 1.6 V, 2 V, and 3.3 V
The TPS310x and TPS311x families of supervisory
circuits
provide circuit initialization and timing
•
High Trip-Point Accuracy: 0.75%
supervision, primarily for DSP and processor-based
•
Supply Current of 1.2 μ A (typical)
systems.
•
RESET Defined With Input Voltages as Low as
During power-on, RESET is asserted when the
0.4 V
supply voltage (V
DD
) becomes higher than 0.4 V.
•
Power-On Reset Generator With a Delay Time
Thereafter, the supervisory circuit monitors V
DD
and
of 130 ms
keeps the RESET output active as long as V
DD
•
Push/Pull or Open-Drain RESET Outputs
remains below the threshold voltage (V
IT
). An internal
timer delays the return of the output to the inactive •
SOT23-6 Package
state to ensure proper system reset. The delay time
•
Package Temperature Range: –40
°
C to +85
°
C
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
•
Applications Using Low-Power DSPs,
threshold voltage (V
IT
) set by an internal voltage
Microcontrollers, or Microprocessors
divider.
•
Portable- and Battery-Powered Equipment
The TPS3103 and TPS3106 have an active-low, •
Intelligent Instruments
open-drain RESET output. The TPS3110 has an
•
Wireless Communication Systems
active-low push/pull RESET.
•
Industrial Equipment
The product spectrum is designed for supply voltages
•
Notebook/Desktop Computers
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.
1
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.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2001–2007, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
MS-8
59