TEXAS INSTRUMENTS TPS3307-18, TPS3307-25, TPS3307-33 Technical data
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1
2
3
4
8
7
6
5
SENSE1
SENSE2
SENSE3
GND
V
DD
MR
RESET
RESET
D OR DGN PACKAGE
(TOP VIEW)
SENSE 1
SENSE 2 RESET
TPS3307−33
SENSE 3
V
DD
GND
100nF
RESET
V
DD
GND
3.3V5V2.5V
470kΩ
620kΩ
• Applications using DSPs,
Microcontrollers or Microprocessors
Industrial Equipment
Programmable Controls
Automotive Systems
Portable/Battery Powered Equipment
Intelligent Instruments
Wireless Communication Systems
Notebook/Desktop Computers
MSP430C325
TPS3307-18, TPS3307-25, TPS3307-33
SLVS199B – DECEMBER 1998 – REVISED OCTOBER 2004
TRIPLE PROCESSOR SUPERVISORS
FEATURES
• Triple Supervisory Circuits for DSP and
Processor-Based Systems
• Power-On Reset Generator With Fixed Delay
Time of 200ms, No External Capacitor Needed
• Temperature-Compensated Voltage Reference
• Maximum Supply Current of 40µA
• Supply Voltage Range: 2V to 6V
• Defined RESET Output From V
• MSOP-8 and SO-8 Packages
• Temperature Range : – 40 ° C to 85 ° C
Typical Applications
Figure 1 lists some of the typical applications for the TPS3307 family, and a schematic diagram for a
processor-based system application. This application uses TI part numbers TPS3307-33 and MSP430C325.
≥ 1.1V
DD
Figure 1. Applications Using the TPS3307 Family
DESCRIPTION
The TPS3307 family is a series of micropower supply voltage supervisors designed for circuit initialization
primarily in DSP and processor-based systems, which require more than one supply voltage.
The product spectrum of the TPS3307-xx is designed for monitoring three independent supply voltages:
3.3V/1.8V/adj, 3.3V/2.5V/adj or 3.3V/5V/adj. The adjustable SENSE input allows the monitoring of any supply
voltage >1.25V.
The various supply voltage supervisors are designed to monitor the nominal supply voltage as shown in the
following supply voltage monitoring table.
During power-on, RESET is asserted when the supply voltage V
supply voltage supervisor monitors the SENSE n inputs and keeps RESET active as long as SENSE n remain
below the threshold voltage V
PowerPAD is a trademark of Texas Instruments.
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.
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.
.
IT+
becomes higher than 1.1V. Thereafter, the
DD
Copyright © 1998–2004, Texas Instruments Incorporated
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TPS3307-18, TPS3307-25, TPS3307-33
SLVS199B – DECEMBER 1998 – REVISED OCTOBER 2004
An internal timer delays the return of the RESET output to the inactive state (high) to ensure proper system
reset. The delay time, t
When the voltage at any SENSE input drops below the threshold voltage V
(low) again.
The TPS3307-xx family of devices incorporates a manual reset input, MR. A low level at MR causes RESET to
become active. In addition to the active-low RESET output, the TPS3307-xx family includes an active-high
RESET output.
The devices are available in either 8-pin MSOP or standard 8-pin SO packages.
The TPS3307-xx devices are characterized for operation over a temperature range of –40 ° C to 85 ° C.
DEVICE
TPS3307-18 3.3V 1.8V User defined 2.93V 1.68V 1.25V
TPS3307-25 3.3V 2.5V User defined 2.93V 2.25V 1.25V
TPS3307-33 5V 3.3V User defined 4.55V 2.93V 1.25V
(1) The actual sense voltage has to be adjusted by an external resistor divider according to the application requirements.
T
A
-40 ° C to 85 ° C TPS3307-25D TPS3307-25DGN TIAAQ TPS3307-25Y
MR SENSE1 > V
L X
H 0 0 0 L H
H 0 0 1 L H
H 0 1 0 L H
H 0 1 1 L H
H 1 0 0 L H
H 1 0 1 L H
H 1 1 0 L H
H 1 1 1 H L
(1) X = Don't care
= 200ms, starts after all SENSE n inputs have risen above the threshold voltage V
d (typ)
, the RESET output becomes active
IT-
SUPPLY VOLTAGE MONITORING
NOMINAL SUPERVISED VOLTAGE THRESHOLD VOLTAGE (TYP)
SENSE1 SENSE2 SENSE3 SENSE1 SENSE2 SENSE3
AVAILABLE OPTIONS
PACKAGED DEVICES
SMALL OUTLINE
(D)
TPS3307-18D TPS3307-18DGN TIAAP TPS3307-18Y
TPS3307-33D TPS3307-33DGN TIAAR TPS3307-33Y
PowerPAD™
µ-SMALL OUTLINE
(DGN)
MARKING CHIP FORM
DGN PACKAGE (Y)
FUNCTION/TRUTH TABLES
IT1
(1)
SENSE2 > V
(1)
X
IT2
SENSE3 > V
IT3
X L H
RESET RESET
(1)
(1)
(1)
.
IT+
2
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_
+
_
+
_
+
R4
R2
R1
R3
Reference
Voltage
of 1.25V
RESET
Logic + Timer
Oscillator
14 kΩ
V
DD
MR
SENSE 1
SENSE 2
GND
SENSE 3
RESET
RESET
TPS3307
t
d
t
d
t
d
RESET Because of SENSE Below V
IT
RESET Because of MR
RESET Because of SENSE Below V
IT–
RESET Because of SENSE Below V
IT–
SENSEn
V
(nom)
V
IT–
MR
1
0
1
0
RESET
t
t
t
Functional Block Diagram
Timing Diagram
TPS3307-18, TPS3307-25, TPS3307-33
SLVS199B – DECEMBER 1998 – REVISED OCTOBER 2004
TPS3307Y Chip Information
These chips, when properly assembled, display characteristics similar to those of the TPS3307. Thermal
compression or ultrasonic bonding may take place on the doped aluminium bonding pads. The chips may be
mounted with conductive epoxy or a gold-silicon preform.
3
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56
48
TPS3307Y
(1)
(2)
(3)
(5)
(6)
CHIP THICKNESS: 10 TYPICAL
BONDING PADS: 4 × 4 MINIMUM
T
J
max = 150°C
TOLERANCES ARE ±10%.
ALL DIMENSIONS ARE IN MILS
(4)
(7)
(8)
TPS3307-18, TPS3307-25, TPS3307-33
SLVS199B – DECEMBER 1998 – REVISED OCTOBER 2004
TERMINAL
NAME NO.
I/O DESCRIPTION
GND 4 Ground
MR 7 I Manual reset
RESET 5 O Active-low reset output
RESET 6 O Active-high reset output
SENSE1 1 I Sense voltage input 1
SENSE2 2 I Sense voltage input 2
SENSE3 3 I Sense voltage input 3
V
DD
8 Supply voltage
4
Terminal Functions
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TPS3307-18, TPS3307-25, TPS3307-33
SLVS199B – DECEMBER 1998 – REVISED OCTOBER 2004
Absolute Maximum Ratings
Over operating free-air temperature range (unless otherwise noted).
Supply voltage, V
All other pins
Maximum low output current, I
Maximum high output current, I
Input clamp current, IIK(VI< 0 or VI> VDD) ± 20mA
Output clamp current, IOK(V
Continuous total power dissipation See Dissipation Rating Table
Operating free-air temperature range, T
Storage temperature range, T
Soldering temperature 260 ° C
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltage values are with respect to GND. For reliable operation the device must not be operated at 7V for more than t = 1000h
continuously.
(2)
DD
(2)
OL
OH
< 0 or VO> VDD) ± 20mA
O
stg
Dissipation Rating Table
PACKAGE
DGN 2.14W 17.1mW/ ° C 1.37W 1.11W
D 725mW 5.8mW/ ° C 464mW 377mW
TA≤ 25 ° C DERATING FACTOR TA= 70 ° C TA= 85 ° C
POWER RATING ABOVE TA= 25 ° C POWER RATING POWER RATING
(1)
UNIT
7V
-0.3V to 7V
5mA
-5mA
A
-40 ° C to 85 ° C
-65 ° C to 150 ° C
Recommended Operating Conditions
At specified temperature range.
MIN MAX UNIT
Supply voltage, V
Input voltage at MR and SENSE3, V
Input voltage at SENSE1 and SENSE2, V
High-level input voltage at MR, V
Low-level input voltage at MR, V
DD
I
I
IH
IL
Input transition rise and fall rate at MR, ∆ t/ ∆ V 50 ns/V
Operating free-air temperature range, T
A
2 6 V
0 V
0.7 x V
0 (V
DD
+0.3)V
DD
-40 85 ° C
+ 0.3 V
DD
/1.25V V
IT
0.3 × V
V
V
DD
5
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