TC650AGVUATR Microchip Technology, TC650AGVUATR Datasheet - Page 8

• Manufacturer Part Number: TC650AGVUATR
• Description: IC TEMP SNSR/DC FAN CNTRLR 8MSOP
• Manufacturer: Microchip Technology

Specifications of TC650AGVUATR

• Function: Fan Control, Temp Monitor
• Topology: ADC
• Sensor Type: Internal
• Sensing Temperature: 25°C, 55°C Trip Points
• Output Type: Active Low
• Output Alarm: Yes
• Output Fan: Yes
• Voltage - Supply: 2.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Temperature Threshold: + 55 C
• Full Temp Accuracy: +/- 2.5 C
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: - 25 C
• Supply Current: 90 uA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TC650/TC651
4.6
There are two temperature thresholds that determine
the characteristics of the device. The minimum fan
speed temperature (T
ature (T
when the temperature is below the T
PWM output will perform a different operation. For the
TC650, the PWM will be driven at the minimum PWM
frequency, while the TC651 will shut down the PWM
(PWM = L).
T
range from 25°C to 35°C. T
55°C and must be 10°C (or more) than the specified T
The five temperature regions defined by the six
thresholds are defined in the TC650/TC651 by means of
factory trimming. Once a T
thresholds are automatically equally spaced between T
and T
corresponding PWM duty cycle is.
TABLE 4-1:
DS21450C-page 8
T
Note 1:
L
Temperature
T
T
T
T
T
H
4
and T
1
3
L
2
T
< = T < T
(Note 1)
(T = T
< = T < T
< = T < T
< = T < T
< = T < T
OV
< = T <T
T < T
H
. Table 4-1 shows these 5 regions and what the
< = T
H
Temperature Selection Guide
(Minimum Fan Speed/Full Speed)
H
). Depending on the TC65X device selected,
J
L
can be selected in 5°C increments. T
)
The temperature regions defined by the
six temperature thresholds are pre-
defined in the TC650/TC651 by means of
factory trimming. Once a T
programmed, the T
automatically equally spaced between T
and T
OV
1
3
H
2
4
H
TEMPERATURE RANGE
DEFINITION
Speed mode)
100% with Overtemperature Alert
.
(Minimum
L
TC650
100%
) and the full fan speed temper-
40%
50%
60%
70%
80%
90%
L
PWM Duty Cycle
and T
H
(T
can range from 35°C to
1
OVER
– T
H
are set, the T
(Auto-shutdown
4
thresholds are
= L)
L
L
and T
trip point, the
TC651
mode)
100%
50%
60%
70%
80%
90%
Off
H
are
1
L
– T
can
L
L
4
L
.
Table 4-2 shows the device codes that specify the T
and T
ples are given to assist in understanding the device-
ordering nomenclature.
Example 1: Suppose you wanted the fan to run at
Example 2: Suppose you wanted the fan to turn on at
TABLE 4-2:
Note 1:
Threshold
Difference
Temp.
20°C
30°C
10°C
15°C
L
2:
temperature thresholds. The following exam-
This temperature threshold option is
available for ordering.
This is a custom temperature threshold
option. Please contact the factory for
more information.
40% speed at 25°C or less and go to full-
speed at 45°C. You would order the part
number TC650AEVUA.
30°C and go to full speed at 45°C. You
would order the part number
TC651BEVUA.
DEVICE CODES FOR
TEMPERATURE
THRESHOLDS
T
25
30
35
25
30
35
25
30
35
25
L
 2004 Microchip Technology Inc.
T
35
40
45
40
45
50
45
50
55
55
H
Limits Code
Threshold
CG
AG
AC
BD
CE
AD
BE
CF
AE
BF
(1)
(2)
(1)
(2)
(1)
(2)
(2)
(2)
(1)
(1)
H