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TC623CEPA

P1-P3P4-P6P7-P9P10-P12
2001-2012 Microchip Technology Inc. DS21441D-page 1
TC623
Features:
• Integrated Temp Sensor and Detector Operate
from a Supply Voltage as Low as 2.7V
• Replaces Mechanical Thermostats and Switches
• On-Chip Temperature Sense
• 8-Pin DIP or SOIC for Direct PCB Mounting
• 2 User Programmable Temperature Set Points
• 2 Independent Temperature Limit Outputs
• Heat/Cool Regulate Output
Applications:
• CPU Thermal Management
• System Over or Under Temperature Shutdown
• Advanced Thermal Warning
• Fan Speed Control Circuits
• Accurate Appliance Temperature Sensing
• Environmental Control
Device Selection Table
Functional Block Diagram
Package Type
General Description
The TC623 is a 3V solid-state, programmable temper-
ature sensor designed for use in thermal management
applications. It features dual thermal interrupt outputs
(LOW LIMIT and HIGH LIMIT) each of which are set
with an external resistor. The HIGH LIMIT and LOW
LIMIT outputs are driven active (high) when measured
temperature equals the user programmed limits. The
CONTROL output is driven active (high) when temper-
ature equals the HIGH LIMIT set point and turned off
when temperature falls below the LOW LIMIT set point.
The CONTROL output can be used to provide simple
ON/OFF control to a cooling fan if so desired.
Low voltage operation, easy set point programming,
small size and low cost make the TC623 an ideal
choice for many thermal management applications.
Part Number Package Temp. Range
TC623CCOA 8-Pin SOIC 0°C to +70°C
TC623CCPA 8-Pin PDIP 0°C to +70°C
TC623CEOA 8-Pin SOIC -40°C to +85°C
TC623CEPA 8-Pin PDIP -40°C to +85°C
TC623CVOA 8-Pin SOIC -40°C to +125°C
Note: Latch Output (C option), is a Standard Device
Contact Factory for Latch Q Output (H option).
3
HIGH SET
2
LOW SET
1
NC
4
GND
5
CONTROL
6
HIGH LIMIT
V
CC
7
LOW LIMIT
8
Latch
Q
SR
+
+
–
–
TC623
R < R
LOW
HIGH
V
REF
Gen.
V
REF
Gen.
V
REF
Temperature
To Voltage
Converter
GND
HIGH SET
PDIP
SOIC
NC
GND
HIGH SET
LOW SET
LOW SET
NC
V
CC
HIGH LIMIT
CONTROL
LOW LIMIT
V
CC
HIGH LIMIT
CONTROL
LOW LIMIT
8
7
6
5
1
2
3
4
1
8
2
7
3
6
4
5
TC623CCOA
TC623CEOA
TC623CVOA
TC623CCPA
TC623CEPA
3V, Dual Trip Point Temperature Sensor
TC623
DS21441D-page 2 2001-2012 Microchip Technology Inc.
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Supply Voltage ......................................................5.5V
Input Voltage Any Input ..(GND – 0.3V) to (V
DD
+0.3V)
Package Power Dissipation (T
A
70°C)
Plastic DIP............................................730 mW
SOIC.....................................................470 mW
Derating Factors
Plastic DIP ...........................................8 mW/°C
SOIC....................................................6 mW/°C
Operating Temperature
V Version .................................-40°C to +125°C
E Version ...................................-40°C to +85°C
C Version ......................................0°C to +70°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.
TC623 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Over Operating Temperature Range, V
DD
= 2.7V to 4.5V, unless otherwise specified.
Symbol Parameter Min Typ. Max Unit Test Conditions
V
DD
Supply Voltage Range 2.7 — 4.5 V
I
DD
Supply Current — 150 250 A2.7V V
DD
4.5V
T
SET
Absolute Accuracy T - 3 T ±1 T + 3 °C T = Programmed Temperature
V
OH
Output Voltage High 0.9 x V
DD
0.8 x V
DD
—
—
—
—
V
V
I
OH
=
250 A
I
OH
=
500 A
V
OL
Output Voltage Low —
—
—
—
0.1 x V
DD
0.2 x V
DD
V
V
I
OL
= 500A
I
OL
=
1 mA
HYS Hysteresis — — -2 °C Falling Temperature
2001-2012 Microchip Technology Inc. DS21441D-page 3
TC623
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 Description
1 NC No Internal Connection.
2 LOW SET Low temperature set point. Connect an external 1% resistor from LOW SET to V
DD
to set trip point.
3 HIGH SET High temperature set point. Connect an external 1% resistor from HIGH SET to
V
DD
to set trip point.
4 GND Ground Terminal.
5 CONTROL Control output.
6 HIGH LIMIT High temperature push/pull output.
7 LOW LIMIT Low temperature push/pull output.
8V
CC
Power supply input.
P1-P3P4-P6P7-P9P10-P12

TC623CEPA

Mfr. #:
Buy TC623CEPA
Manufacturer:
Microchip Technology
Description:
Board Mount Temperature Sensors Dual Prog Trip Point
Lifecycle:
New from this manufacturer.
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