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TC620HVOA Datasheet(PDF) 1 Page - Microchip Technology

Part # TC620HVOA
Description  5V, Dual Trip Point Temperature Sensors
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

TC620HVOA Datasheet(HTML) 1 Page - Microchip Technology

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 2001-2015 Microchip Technology Inc.
DS20001439E-page 1
TC620/TC621
Features
• User Programmable Hysteresis and
Temperature Set Point
• Easily Programs with Two External Resistors
• Wide Temperature Detection Range:
- 0°C to 70°C: (TC620/TC621CCX)
- -40°C to +125°C: (TC620/TC621CVX)
- -40°C to +85°C: (TC620/TC621CEX)
• Onboard Temperature Sensing Applications
(TC620X)
• External NTC Thermistor for Remote Sensing
Applications (TC621X)
• Available in 8-Pin PDIP and SOIC Packages
Applications
• Power Supply Over Temperature Detection
• Consumer Equipment
• Temperature Regulators
• CPU Thermal Protection
Device Selection Table
Note:
*The part code will be C or H (see
Functional Block Diagrams).
Package Type
General Description
The TC620 and TC621 are programmable logic output
temperature detectors designed for use in thermal
management applications. The TC620 features an
onboard
temperature
sensor,
while
the
TC621
connects to an external NTC thermistor for remote
sensing applications.
Both devices feature dual thermal interrupt outputs
(HIGH LIMIT and LOW LIMIT), each of which is pro-
grammed with a single external resistor. On the TC620,
these outputs are driven active (high) when measured
temperature equals the user programmed limits. The
CONTROL (hysteresis) output is driven high when tem-
perature equals the high limit setting and returns low
when temperature falls below the low limit setting. This
output can be used to provide ON/OFF control to a
cooling fan or heater. The TC621 provides the same
output functions except that the logical states are
inverted.
The
TC620/TC621
are
usable
over
operating
temperature ranges of 0°C to 70°C, -40°C to +125°C.
Part Number
Package
Temperature
Range
TC620X*COA
8-Pin SOIC
0°C to +70°C
TC620X*CPA
8-Pin PDIP
0°C to +70°C
TC620X*EOA
8-Pin SOIC
-40°C to +85°C
TC620X*EPA
8-Pin PDIP
-40°C to +85°C
TC620C*VOA
8-Pin SOIC
-40°C to +125°C
TC621X*COA
8-Pin SOIC
0°C to +70°C
TC621X*CPA
8-Pin PDIP
0°C to +70°C
TC621X*EOA
8-Pin SOIC
-40°C to +85°C
TC621X*EPA
8-Pin PDIP
-40°C to +85°C
TC621C*VOA
8-Pin SOIC
-40°C to +125°C
THERMISTOR
8-SOIC
8-SOIC
VDD
GND
LOW LIMIT
CONTROL
NC
LOW SET
HIGH SET
HIGH LIMIT
VDD
GND
LOW LIMIT
CONTROL
LOW SET
HIGH SET
HIGH LIMIT
8
7
6
5
1
2
3
4
TC621XCOA
TC621XEOA
8
7
6
5
1
2
3
4
TC620XCOA
TC620XEOA
TC620CVOA
THERMISTOR
8-PDIP
VDD
GND
LOW LIMIT
CONTROL
LOW SET
HIGH SET
HIGH LIMIT
8
7
6
5
1
2
3
4
TC621XCPA
TC621XEPA
NC
8-PDIP
VDD
GND
LOW LIMIT
CONTROL
HIGH SET
LOW SET
HIGH LIMIT
8
7
6
5
1
2
3
4
TC620XCPA
TC620XEPA
5V, Dual Trip Point Temperature Sensors


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