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TC652AEVUART

Description
Single Trip Point Switch/Digital Sensor, MSOP-8
CategoryThe sensor   
File Size53KB,8 Pages
ManufacturerTelCom Semiconductor, Inc. (Microchip Technology)
Websitehttp://www.telcom-semi.com/
Download Datasheet Parametric View All

TC652AEVUART Overview

Single Trip Point Switch/Digital Sensor, MSOP-8

TC652AEVUART Parametric

Parameter NameAttribute value
MakerTelCom Semiconductor, Inc. (Microchip Technology)
package instructionMSOP-8
Reach Compliance Codeunknown
Sensor/temperature sensor typeTEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SINGLE TRIP POINT
Integrated Temperature Sensor and
Brushless DC Fan Controller with Fan
Fault Detect and Over Temperature Alert
TC652
TC652
TC653
TC653
Integrated Temperature Sensor and Brushless DC Fan
Controller with Fan Fault Detect and Over Temperature Alert
FEATURES
s
s
s
s
s
s
s
s
s
s
Digital Temperature Sensing and Multi-Speed
Fan Control
FanSense
Fan Fault Detect Circuitry
Built in Over Temperature Alert (Tover)
Temperature Proportional Fan Speed Control for
Acoustic Noise Reduction and Longer Fan Life
Pulse Width Modulation Output Drive for Cost
and Power Savings
Solid State Temperature Sensing
±
1
o
C (Typical) Accuracy from 25
o
C to +70
o
C
2.8 -5.5V Operating Range
TC653 includes Auto Fan Shutdown
Low Operating Power: 50
µ
A (Typ)
GENERAL DESCRIPTION
The TC652/653 are integrated temperature sensors
and brushless DC fan speed controllers with FanSense™
technology. The TC652/653 measure their junction tem-
perature and control the speed of the fan based on that
temperature, making them especially suited for applications
in modern electronic equipment. The FanSense
fan fault
detect circuitry eliminates the need for a more expensive
3 wire fan.
Temperature data is converted from the on-chip ther-
mal sensing element and translated into a fractional fan
speed from 40% to 100%. A temperature selection guide in
the data sheet is used to choose the low and high side
temperature limits that correlate fan speed with tempera-
ture. The TC652/653 also include a single trip point over
temperature alert (Tover) that eliminates the need for addi-
tional temperature sensors. In addition the TC653 includes
an auto fan shutdown function for additional power savings.
The TC652/653 are easy to use, require no software
overhead, and are therefore the ideal choice for implement-
ing thermal management in a variety of systems.
FanSense™ is a trademark of TelCom Semiconductor, Inc.
APPLICATIONS
s
s
s
s
s
s
Thermal Protection for Personal Computers
Digital Set-Top Boxes
Notebook Computers
Data Communications
Power Supplies
Projectors
RELATED LITERATURE
s
s
Application Note: 58
Article: "An integrated fan speed control solution
can lower system costs, reduce acoustic noise
and power consumption and enhance system
reliability"
ORDERING INFORMATION
Part
Number
TC652XXVUA
TC653XXVUA
X
A
B
C
D
E
F
G
Package
8-Pin MSOP
8-Pin MSOP
25
30
35
40
45
50
55
Operating
Temp. Range
–40˚C to +125˚C
–40˚C to +125˚C
Temperature
TYPICAL APPLICATION
+12V
+5V V
DD
1KΩ
1
2
3
4
VDD
FAULT TC652
TC653
SHDN
GND
PWM
GND
Tover
SENSE
DC FAN
300mA
MAX
8
7
6
0.01µF
5
C
SENSE
R
SENSE
Notes:
1. The "X" denotes a suffix for temperature threshold settings.
2. Please see the Temperature Selection Guide on page 5
3. Contact factory for other temperature ranges.
PIN CONFIGURATIONS
8-Pin MSOP
VDD 1
FAULT 2
SHDN 3
GND 4
8 PWM
GND
SHDN CONTROL
FAN FAULT ALERT
OVER TEMP
ALERT
2Ω
TC652
TC653
7 GND
6 Tover
5 SENSE
µController
TC652/3-1 5/23/00
TelCom Semiconductor reserves the right to make changes in the circuitry and specifications of its devices.
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