TC622 DATA SHEET (02/05/2013) DOWNLOAD

TC622/TC624
Low Cost Single Trip Point Temperature Sensor
Features:
General Description:
• Temperature Set Point Easily Programs with a
Single External Resistor
• Operates with 2.7V Power Supply (TC624)
• TO-220 Package for Direct Mounting to Heatsink
(TC622XAT) or Standard 8-Pin PDIP and SOIC
The TC622 and TC624 are programmable solid-state
temperature sensors designed to replace mechanical
switches in sensing and control applications. Both
devices integrate the temperature sensor with a
voltage reference and all required detector circuitry.
The desired temperature set point is set by the user
with a single external resistor.
Applications:
•
•
•
•
•
Power Supply Over-Temperature Detection
Consumer Electronics
Fire/Heat Detection
UPSs, Amplifiers, Motors
CPU Thermal Management in PCs
Ambient temperature is sensed and compared to the
programmed set point. The OUT and OUT outputs are
driven to their active state when the measured
temperature exceeds the programmed set point.
The TC622 has a power supply voltage range of 4.5V
to 18.0V while the TC624 operates over a power supply
range of 2.7V to 4.5V. Both devices are usable over a
temperature range of -40°C to +125°C (TC622VXX,
TC624VXX). Both devices feature low supply current
making them suitable for portable applications.
Eight-pin through-hole and surface mount packages
are available. The TC622 is also offered in a 5-pin
TO-220 package.
The TC622 and TC624 are single point temperature
detectors ideal for use in a wide variety of applications.
Device Selection Table
Part Number
Voltage Operation
Package
Ambient Temperature
TC622COA
4.5V to 18V
8-Pin SOIC
0°C to +70°C
TC622CPA
4.5V to 18V
8-Pin PDIP
0°C to +70°C
TC622EAT
4.5V to 18V
5-Pin TO-220
-40°C to +85°C
TC622EOA
4.5V to 18V
8-Pin SOIC
-40°C to +85°C
TC622EPA
4.5V to 18V
8-Pin PDIP
-40°C to +85°C
TC622VAT
4.5V to 18V
5-Pin TO-220
-40°C to +125°C
TC622VOA
4.5V to 18V
8-Pin SOIC
-40°C to +125°C
TC622VPA
4.5V to 18V
8-Pin PDIP
-40°C to +125°C
TC624COA
2.7V to 4.5V
8-Pin SOIC
0°C to +70°C
TC624CPA
2.7V to 4.5V
8-Pin PDIP
0°C to +70°C
TC624EOA
2.7V to 4.5V
8-Pin SOIC
-40°C to +85°C
TC624EPA
2.7V to 4.5V
8-Pin PDIP
-40°C to +85°C
TC624VOA
2.7V to 4.5V
8-Pin SOIC
-40°C to +125°C
TC624VPA
2.7V to 4.5V
8-Pin PDIP
-40°C to +125°
 2001-2012 Microchip Technology Inc.
DS21440D-page 1
TC622/TC624
Package Type
SOIC
7
VDD
6
NC
4
5
TSET
NC
1
8
NC
OUT
2
7
VDD
OUT
3
6
NC
GND
4
OUT
2
OUT
3
GND
TC622CPA
TC622EPA
TC622VPA
TC624CPA
TC624EPA
TC624VPA
NC
1
OUT
2
OUT
3
TC622COA
TC622EOA
TC622VOA
8
NC
7
VDD
6
NC
GND
4
5
TSET
NC
1
8
NC
OUT
2
7
VDD
OUT
3
6
NC
GND
4
5
TSET
TC624COA
TC624EOA
TC624VOA
TC622EAT
TC622VAT
1 2 3 4 5
GND
TSET
NC
1
VDD
8
NC
SOT-220
OUT
OUT
PDIP
5 TSET
Note: For TO-220 Package, Pin 3 is connected to case heatsink.
Functional Block Diagram
+9V
9V
Battery
RSET
Horn
1
VDD
NC
7
Microcontrollers
5
TSET
NC
TC622
TC624
6
4
DS21440D-page 2
OUT
8
3
NC
GND
OUT
2
ALARM
 2001-2012 Microchip Technology Inc.
TC622/TC624
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Supply Voltage (TC622) ......................................... 20V
(TC624) ........................................ 5.5V
Input Voltage Any Input .. (GND – 0.3V) to (VDD +0.3V)
Operating Temperature ...................... -40°C to +125°C
C Version .............................. 0°C to +70°C
E Version ........................... -40°C to +85°C
V Version ......................... -40°C to +125°C
Storage Temperature ......................... -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.
.
TC622/TC624 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Over operating temperature range, unless otherwise specified.
Sym
Parameter
Device
Min
Typ
Max
Unit
VDD
Supply Voltage
Range
TC622
TC624
4.5
2.7
—
—
18
4.5
V
IDD
Supply Current
TC622
TC624
—
—
200
170
600
300
A
5.0V  VDD  18V
2.7V  VDD  4.5V
VOH
Output Voltage
(High)
TC622 0.90 x VDD
—
—
V
0.80 x VDD
—
—
5.0V  VDD  18V, -40°C  TA  +125°C,
IOH = 250 A
IOH = 500 A
VOL
Output Voltage
(Low)
TC622
—
—
—
—
—
—
0.15 x VDD
0.30 x VDD
0.35 x VDD
V
-40°C  TA  +85°C, IOL = 500 A
IOL = 1 mA
-40°C  TA  +125°C, IOL = 1 mA
VOH
Output Voltage
(High)
TC624
—
0.90 x VDD
0.80 x VDD
—
—
—
—
V
Output Voltage
(Low)
TC624
—
—
—
—
—
—
0.1 x VDD
0.2 x VDD
0.25 x VDD
V
-40°C  TA  +85°C, IOL = 500 A
IOL = 1 mA
-40°C  TA  +125°C, IOL = 1 mA
T-5
T-5
T±1
T±1
T+5
T+5
°C
TSET = Programmed Temperature
TSET = Programmed Temperature
—
—
2
2
—
—
°C
VOL
TSET Absolute Accuracy TC622
TC624
OUT Trip Point
Hysteresis
TC622
TC624
 2001-2012 Microchip Technology Inc.
Test Conditions
2.7V  VDD  4.5V
-40°C  TA  +125°C, IOH = 250 A
IOH = 500 A
DS21440D-page 3
TC622/TC624
2.0
PIN DESCRIPTION
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
PIN FUNCTION TABLE
Pin No.
(8-Pin SOIC)
(8-Pin PDIP)
Symbol
1
NC
2
OUT
Active low output.
3
OUT
Active high output.
4
GND
Ground Terminal.
5
TSET
Temperature set point. Connect an external 1% resistor from TSET to VCC to set
trip point.
Description
No Internal Connection.
6
NC
No Internal Connection.
7
VDD
Power supply input.
8
NC
No Internal Connection.
Pin No.
(5-Pin SOT-220)
Symbol
1
OUT
2
OUT
Active high output.
3
VDD
Power supply input.
4
GND
Ground Terminal.
5
TSET
Temperature set point. Connect an external 1% resistor from TSET to VCC to set
trip point.
DS21440D-page 4
Description
Active low output.
 2001-2012 Microchip Technology Inc.
TC622/TC624
3.0
DETAILED DESCRIPTION
3.1
Trip Point Programming
3.2
When the temperature of the device exceeds the programmed temperature trip point, TSET, the OUT and
OUT outputs are driven into their active states. The
desired trip point temperature is programmed with a
single external resistor connected between the TSET
input and VCC. The relationship between the resistor
value and the trip point temperature is given by
Equation 3-1.
Hysteresis
To prevent output “chattering” at the trip point temperature, the temperature detector in the TC622/TC624 has
2°C hysteresis (see Figure 3-2). The outputs are driven
active when the temperature crosses the set point
determined by the external resistor. As temperature
declines below the set point, the hysteresis action will
hold the outputs true until the temperature drops 2°C
below the threshold.
Temperature
EQUATION 3-1:
Set Point
(Set Point – 2 Degrees C)
RTRIP = 0.5997 x T 2.1312
Where:
RTRIP = Programming resistor value in Ohms
T = Desired trip temperature in degrees Kelvin.
OUT
For example, as shown in Figure 3-1, to program the
device to trip at 50°C, the programming resistor is:
OUT
FIGURE 3-2:
RTRIP = 0.5997 x ((50 + 273.15)2.1312) = 133.65 k
TC622/TC624 Hysteresis
RESISTANCE, RTRIP (kΩ)
250
200
150
100
50
-55
-35
-15
5
25
45
65
85
105
125
TEMPERATURE (°C)
FIGURE 3-1:
Programming Resistor
Values vs. Temperature
 2001-2012 Microchip Technology Inc.
DS21440D-page 5
TC622/TC624
4.0
TYPICAL APPLICATIONS
4.1
Over-Temperature Shutdown
4.2
Cooling and Heating Applications
The TC622/TC624 can be used to control a DC fan as
shown in Figure 4-2. The fan turns on when the sensed
temperature rises above TSET and remains on until the
temperature falls below TSET - 2°C.
The TC622 can be used to create a simple over-temperature shutdown circuit. In this circuit, temperature is
sensed within the system enclosure (internal system
ambient) or at the heatsink itself. When measured
temperature exceeds a preset limit, a fault is indicated
and the system shuts down.
Figure 4-3 shows the TC622 acting as a heater
thermostat. Circuit operation is identical to that of the
cooling fan application.
Figure 4-1 illustrates an over-temperature shutdown
circuit using the TC622 sensor in a single TO-220
package, allowing direct attachment to the heatsink
surface. As shown, the TC622 outputs are driven active
when the heatsink temperature equals the trip point
temperature set by RTRIP. When this happens, the
crowbar circuit is activated, causing the supply output
to fold back to zero. The TC622 outputs remain active
until the heatsink temperature falls a minimum of 2°C
(built-in hysteresis) below the trip point temperature, at
which time the device again allows normal supply
operation.
Heatsink
Output
Device
TC622
VCC
Output Device
Circuit Board
TC622 Heatsink Mounting
VOUT
Power Good
Signal
RTRIP
TC622
TSET
VDD
OUT
GND
OVERTEMP
Crowbar
Circuit
OUT
Heatsink Surface
FIGURE 4-1:
DS21440D-page 6
TC622 Power Supply Over-Temperature Shutdown
 2001-2012 Microchip Technology Inc.
TC622/TC624
+2.7 to 4.5V +12V
+4.5 to 18.0V
RSET
1
RSET
VDD 7
NC
5 T
SET
+
1
DC Fan
NC 8
VDD 7
NC
GND
NC 8
TC622
OUT
3
OUT 2
6
N-Channel
Logic Level
MOSFET
TSET
TSET – 2 C
NC
4 GND
Temperature
Temperature
4
NC
Heater
5T
SET
TC624
6
+12V
OUT
N-Channel
Level Logic
MOSFET
OUT 2
TSET
TSET – 2 C
OUT
Fan "On"
OUT
Heater "On"
FIGURE 4-2:
for Notebook PC
TC624 As A Fan Controller
 2001-2012 Microchip Technology Inc.
FIGURE 4-3:
Thermostat
TC622 As A Heater
DS21440D-page 7
TC622/TC624
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 SOIC (Narrow) Devices
User Direction of Feed
Pin 1
W
P
Standard Reel Component Orientation
for 713 Suffix Device
Carrier Tape, Number of Components Per Reel and Reel Size
Package
8-Pin SOIC (N)
DS21440D-page 8
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
12 mm
8 mm
2500
13 in
 2001-2012 Microchip Technology Inc.
TC622/TC624
5.3
Package Dimensions
Note:
For the most current package drawings, please see the Microchip Packaging Specification located
at http://www.microchip.com/packaging
8-Pin Plastic DIP
Pin 1
.260 (6.60)
.240 (6.10)
.045 (1.14)
.030 (0.76)
.070 (1.78)
.040 (1.02)
.310 (7.87)
.290 (7.37)
.400 (10.16)
.348 (8.84)
.200 (5.08)
.140 (3.56)
.040 (1.02)
.020 (0.51)
.150 (3.81)
.115 (2.92)
.110 (2.79)
.090 (2.29)
.015 (0.38)
.008 (0.20)
3° Min.
.400 (10.16)
.310 (7.87)
.022 (0.56)
.015 (0.38)
Dimensions: inches (mm)
5.4
Package Dimensions (Continued)
Note:
For the most current package drawings, please see the Microchip Packaging Specification located
at http://www.microchip.com/packaging
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)
 2001-2012 Microchip Technology Inc.
DS21440D-page 9
TC622/TC624
Note:
For the most current package drawings, please see the Microchip Packaging Specification located
at http://www.microchip.com/packaging
5-Pin TO-220
.185 (4.70)
.165 (4.19)
.117 (2.97)
.103 (2.62)
.415 (10.54)
.390 (9.91)
.156 (3.96)
.140 (3.56)
Dia.
.055 (1.40)
.045 (1.14)
.293 (7.44)
.204 (5.18)
3° - 7.5°
5 PLCS.
.613 (15.57)
.569 (14.45)
.037 (0.95)
.025 (0.64)
.590 (14.99)
.482 (12.24)
.025 (0.64)
.012 (0.30)
.072 (1.83)
.062 (1.57)
Pin 1
.273 (6.93)
.263 (6.68)
.115 (2.92)
.087 (2.21)
Dimensions: inches (mm)
DS21440D-page 10
 2001-2012 Microchip Technology Inc.
TC622/TC624
6.0
REVISION HISTORY
Revision D (December 2012)
Added a note to each package outline drawing.
 2001-2012 Microchip Technology Inc.
DS21440D-page 11
TC622/TC624
NOTES:
DS21440D-page 12
 2001-2012 Microchip Technology Inc.
TC622/TC624
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.
Your local Microchip sales office
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.
 2001-2012 Microchip Technology Inc.
DS21440D-page 13
TC622/TC624
NOTES:
DS21440D-page 14
 2001-2012 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
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OTHERWISE, RELATED TO THE INFORMATION,
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Trademarks
The Microchip name and logo, the Microchip logo, dsPIC,
FlashFlex, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro,
PICSTART, PIC32 logo, rfPIC, SST, SST Logo, SuperFlash
and UNI/O are registered trademarks of Microchip Technology
Incorporated in the U.S.A. and other countries.
FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor,
MTP, SEEVAL and The Embedded Control Solutions
Company are registered trademarks of Microchip Technology
Incorporated in the U.S.A.
Silicon Storage Technology is a registered trademark of
Microchip Technology Inc. in other countries.
Analog-for-the-Digital Age, Application Maestro, BodyCom,
chipKIT, chipKIT logo, CodeGuard, dsPICDEM,
dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial
Programming, ICSP, Mindi, MiWi, MPASM, MPF, MPLAB
Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code
Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit,
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Total Endurance, TSHARC, UniWinDriver, WiperLock, ZENA
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Incorporated in the U.S.A. and other countries.
SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
GestIC and ULPP are registered trademarks of Microchip
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All other trademarks mentioned herein are property of their
respective companies.
© 2001-2012, Microchip Technology Incorporated, Printed in
the U.S.A., All Rights Reserved.
Printed on recycled paper.
ISBN: 9781620768242
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CERTIFIED BY DNV
== ISO/TS 16949 ==
 2001-2012 Microchip Technology Inc.
Microchip received ISO/TS-16949:2009 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
DS21440D-page 15
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China - Wuhan
Tel: 86-27-5980-5300
Fax: 86-27-5980-5118
Taiwan - Taipei
Tel: 886-2-2508-8600
Fax: 886-2-2508-0102
China - Xian
Tel: 86-29-8833-7252
Fax: 86-29-8833-7256
Thailand - Bangkok
Tel: 66-2-694-1351
Fax: 66-2-694-1350
UK - Wokingham
Tel: 44-118-921-5869
Fax: 44-118-921-5820
China - Xiamen
Tel: 86-592-2388138
Fax: 86-592-2388130
China - Zhuhai
Tel: 86-756-3210040
Fax: 86-756-3210049
DS21440D-page 16
Italy - Milan
Tel: 39-0331-742611
Fax: 39-0331-466781
Japan - Tokyo
Tel: 81-3-6880- 3770
Fax: 81-3-6880-3771
11/29/12
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