MICROCHIP TC07VUA

Obsolete Device
TC07
3V Logic Output Temperature Sensor with Programmable Hysteresis
Features
General Description
• User Programmable Hysteresis and Temperature
Set Point
• Easily Programs with Two External Resistors
• Wide Temperature Detection Range
- TC07CXA: -0°C to +70°C
- TC07EXA: -40°C to +85°C
- TC07VXA: -40°C to +125°C
• 8-Pin MSOP and 8-Pin SOIC Packages
• Cost Effective
The TC07 is a programmable, logic output temperature
detector that operates from power supply levels as low
as 2.7V. Programming is accomplished with external
resistors connected from the temperature set point
input (TSET) and the hysteresis control input (HSET) to
VDD.
Applications
• Power Supply Over-Temperature Detection
• Consumer Equipment
• Temperature Regulators
Device Selection Table
Part
Number
Package
Temperature
Range
TC07COA
8-Pin SOIC
0°C to +70°C
TC07CUA
8-Pin MSOP
0°C to +70°C
TC07EOA
8-Pin SOIC
-40°C to +85°C
Complementary outputs (OUT and OUT) are driven
active when temperature exceeds the temperature
threshold programmed by the resistor on TSET. The
states of these outputs are maintained (latched) until
temperature falls below threshold programmed by the
resistor on HSET.
The TC07 has an operating temperature range of -40°C
to +125°C (TC07VXA). It features low (<130μA) supply
current and with 8-pin MSOP and 8-pin SOIC
packages, making it suitable for a wide variety of
applications.
Functional Block Diagram
Temperature
Sensor
+
–
TC07EUA
8-Pin MSOP
-40°C to +85°C
8-Pin SOIC
-40°C to +125°C
–
TC07VUA
8-Pin MSOP
-40°C to +125°C
+
NC
1
2
TSET
3
GND
4
TC07COA
TC07EOA
TC07VOA
OUT
R
Q
Voltage
Reference
Generator
SOIC
HSET
Q
OUT
Temperature
To Voltage
Converter
TC07VOA
Package Type
S
8
VDD
7
NC
6
OUT
5
OUT
8
VDD
TSET
HSET
VDD
GND
MSOP
NC
1
HSET
2
TSET
3
GND
4
TC07CUA
TC07EUA
TC07VUA
© 2005 Microchip Technology Inc.
7
NC
6
OUT
5
OUT
DS21674C-page 1
TC07
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Supply Voltage ........................................................ 7V
Input Voltage Any Input . (GND – 0.3V) to (VDD + 0.3V)
Operating Temperature ......................-40°C to +125°C
Storage Temperature, TJ ....................-65°C to +150°C
*Stresses above 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 above those indicated in the
operation sections of the specifications is not implied. Exposure to Absolute Maximum Rating conditions for extended
periods may affect device reliability.
TC07 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: TA = Over operational temperature range, unless otherwise specified.
Symbol
Parameter
VDD
Supply Voltage Range
IDD
Supply Current
Min
Typ
Max
Unit
2.7
–
5.5
V
–
130
300
μA
Test Conditions
2.7V < VCC < 5.5V
VOH
Output Voltage (High)
0.8 x VDD
–
–
V
IOUT = 500μA
VOL
Output Voltage (Low)
–
–
0.25 x VDD
V
IOUT = 1mA
H
Minimum Hysteresis
-5
–
–
°C
HSET < TSET
TSET
Absolute Accuracy
T-3
T±1
T+3
°C
T = Programmed Temperature
HSET
Absolute Accuracy
T-5
T±1
T+5
°C
T = Programmed Temperature
DS21674C-page 2
© 2005 Microchip Technology Inc.
TC07
2.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
PIN FUNCTION TABLE
Pin No.
(8-Pin SOIC) Symbol
(8-Pin MSOP)
Description
1
NC
2
HSET
Absolute Accuracy
No Internal Connection
3
TSET
Absolute Accuracy
4
GND
Ground
5
OUT
Minimum Hysteresis
6
OUT
Absolute Accuracy
7
NC
No Internal Connection
8
VDD
Supply Voltage Range
3.0
DETAILED DESCRIPTION
The TC07 programs with resistors connected from the
TSET and HSET inputs to VDD. Output pins OUT and
OUT are driven active when the temperature exceeds
the setting determined by the programming resistor on
TSET. The outputs are maintained (latched) in their
active states until temperature drops below the setting
determined by the programming resistor on HSET
(Figure 3-1).
FIGURE 3-1:
TC07 OUTPUT
WAVEFORMS
Temperature
Temperature set
by Resistor on TSET
Hysteresis set by
Resistor on HSET
OUT
OUT
© 2005 Microchip Technology Inc.
DS21674C-page 3
TC07
4.0
TYPICAL APPLICATIONS
4.2
4.1
Trip Point Programming
The TC07 can be used to control a DC fan as shown in
Figure 4-2. The fan turns on when the sensed temperature rises above the temperature set at TSET and
remains on until the temperature falls below the temperature set at HSET. The amount of “cooling"
performed by the fan is dependent on the programmed
hysteresis.
The resistor values required to achieve the desired trip
point temperatures on TSET and HSET are calculated
using the formula below:
RTRIP = 0.6 x T 2.13
Where:
RTRIP = Programming resistor value in Ohms
T = Desired trip point temperature in degrees Kelvin.
For example, to program the TC07 outputs to go active
at 50°C and inactive at 30°C, the RT and RH
programming resistors are calculated as follows:
RT = 0.6 x ((50 + 273.15)2.13) = 132.8kΩ
RH = 0.6 x ((30 + 273.15)2.13) = 115.9kΩ
Cooling and Heating Applications
Figure 4-3 shows the TC07 acting as a heater thermostat. Circuit operation is identical to that of the cooling
fan application in Figure 4-2.
FIGURE 4-2:
TC07 AS A FAN
CONTROLLER
+2.7 to 5.5V +12V
RT
RH
VDD
NC
Resistance values for TSET and HSET can be approximated using Figure 4-1. Care must be taken to ensure
the HSET programming resistor is a smaller value than
the TSET programming resistor. The temperature
programmed on HSET must be at least 5°C lower than
the temperature value programmed by TSET.
FIGURE 4-1:
NC
HSET
TC07
TSET
OUT
GND
OUT
Logic Level
MOSFET
PROGRAMMING
RESISTOR VALUES VS.
TEMPERATURE
Temperature
250
RESISTANCE (kΩ)
+
Fan
200
TSET
HSET
150
100
50
-55
-35
-15
5
25
45
TEMPERATURE (°C)
DS21674C-page 4
65
85
105
125
Out
Fan "On"
© 2005 Microchip Technology Inc.
TC07
FIGURE 4-3:
TC07 AS A HEATER
THERMOSTAT
+2.7 to 5.5V
RT
+12V
RH
NC
VDD
HSET
NC
Heater
Temperature
TC07
TSET
OUT
GND
OUT
Logic Level
MOSFET
TSET
HSET
OUT
Heater "On"
© 2005 Microchip Technology Inc.
DS21674C-page 5
TC07
5.0
PACKAGING INFORMATION
5.1
Package Marking Information
Package marking data not available at this time.
5.2
Taping Form
Component Taping Orientation for 8-Pin MSOP Devices
User Direction of Feed
PIN 1
W
P
Standard Reel Component Orientation
for TR Suffix Device
Carrier Tape, Number of Components Per Reel and Reel Size
Package
8-Pin MSOP
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
12 mm
8 mm
2500
13 in
Component Taping Orientation for 8-Pin SOIC (Narrow) Devices
User Direction of Feed
PIN 1
W
P
Standard Reel Component Orientation
for TR Suffix Device
Carrier Tape, Number of Components Per Reel and Reel Size
Package
8-Pin SOIC (N)
DS21674C-page 6
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
12 mm
8 mm
2500
13 in
© 2005 Microchip Technology Inc.
TC07
5.3
Package Dimensions
8-Pin MSOP
PIN 1
.122 (3.10)
.114 (2.90)
.197 (5.00)
.189 (4.80)
.026 (0.65) TYP.
.122 (3.10)
.114 (2.90)
.043 (1.10)
MAX.
.016 (0.40)
.010 (0.25)
.008 (0.20)
.005 (0.13)
6° MAX.
.006 (0.15)
.002 (0.05)
.028 (0.70)
.016 (0.40)
Dimensions: inches (mm)
8-Pin SOIC
PIN 1
.157 (3.99)
.150 (3.81)
.244 (6.20)
.228 (5.79)
.050 (1.27) TYP.
.197 (5.00)
.189 (4.80)
.069 (1.75)
.053 (1.35)
.020 (0.51) .010 (0.25)
.013 (0.33) .004 (0.10)
.010 (0.25)
.007 (0.18)
8° MAX..
.050 (1.27)
.016 (0.40)
Dimensions: inches (mm)
© 2005 Microchip Technology Inc.
DS21674C-page 7
TC07
NOTES:
DS21674C-page 8
© 2005 Microchip Technology Inc.
TC07
SALES AND SUPPORT
Data Sheets
Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recommended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following:
1.
2.
3.
Your local Microchip sales office
The Microchip Corporate Literature Center U.S. FAX: (480) 792-7277
The Microchip Worldwide Site (www.microchip.com)
Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using.
New Customer Notification System
Register on our web site (www.microchip.com/cn) to receive the most current information on our products.
© 2005 Microchip Technology Inc.
DS21674C-page 9
TC07
NOTES:
DS21674C-page 10
© 2005 Microchip Technology Inc.
Note the following details of the code protection feature on Microchip devices:
•
Microchip products meet the specification contained in their particular Microchip Data Sheet.
•
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•
Microchip is willing to work with the customer who is concerned about the integrity of their code.
•
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED,
WRITTEN OR ORAL, STATUTORY OR OTHERWISE,
RELATED TO THE INFORMATION, INCLUDING BUT NOT
LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE,
MERCHANTABILITY OR FITNESS FOR PURPOSE.
Microchip disclaims all liability arising from this information and
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implicitly or otherwise, under any Microchip intellectual property
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Trademarks
The Microchip name and logo, the Microchip logo, Accuron,
dsPIC, KEELOQ, microID, MPLAB, PIC, PICmicro, PICSTART,
PRO MATE, PowerSmart, rfPIC, and SmartShunt are
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AmpLab, FilterLab, Migratable Memory, MXDEV, MXLAB,
PICMASTER, SEEVAL, SmartSensor and The Embedded
Control Solutions Company are registered trademarks of
Microchip Technology Incorporated in the U.S.A.
Analog-for-the-Digital Age, Application Maestro, dsPICDEM,
dsPICDEM.net, dsPICworks, ECAN, ECONOMONITOR,
FanSense, FlexROM, fuzzyLAB, In-Circuit Serial
Programming, ICSP, ICEPIC, Linear Active Thermistor,
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SQTP is a service mark of Microchip Technology Incorporated
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All other trademarks mentioned herein are property of their
respective companies.
© 2005, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
Microchip received ISO/TS-16949:2002 quality system certification for
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Chandler and Tempe, Arizona and Mountain View, California in
October 2003. The Company’s quality system processes and
procedures are for its PICmicro® 8-bit MCUs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
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and manufacture of development systems is ISO 9001:2000 certified.
© 2005 Microchip Technology Inc.
DS21674C-page 11
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08/24/05
DS21674C-page 12
© 2005 Microchip Technology Inc.