參數(shù)資料
型號(hào)： TC670ECH
廠商： Microchip Technology Inc.
英文描述： Tiny Predictive Fan Failure Detector
中文描述： 微型風(fēng)扇故障檢測(cè)預(yù)測(cè)
文件頁(yè)數(shù)： 2/12頁(yè)
文件大小： 469K
代理商： TC670ECH
TC670
DS21688B-page 2
2002 Microchip Technology Inc.
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
V
DD
...................................................................................6.0V
All inputs and outputs w.r.t. .....(GND
0.3V) to (V
DD
+ 0.3V)
Difference Input voltage ...................................... IV
DD
- GND
Output Short Circuit Current ..................................continuous
Current at Input Pin ................................................... +/-2 mA
Current at Output Pin .............................................. +/-25 mA
Junction Temperature, T
J
.............................................150°C
ESD protection on all pins
..................................................≥
4 kV
Operating Temperature Range........................-40°C to +85°C
Storage Temperature Range.........................-55°C to +150°C
Stresses above those listed under “Absolute Maximum Rat-
ings” 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. Expo-
sure to Absolute Maximum Rating conditions for extended
periods may affect device reliability.
TC670 ELECTRICAL SPECIFICATIONS
TEMPERATURE SPECIFICATIONS
Electrical Characteristics:
Unless otherwise specified, all limits are specified at +25°C, V
DD
= 3.0V to 5.5V, CLEAR = Low.
Boldface
type specifications apply for temperature range of -40°C to +85°C
Symbol
Parameters
Min
Typ
Max
Unit
Conditions
Power Supply:
V
DD
I
DD
CLEAR Input:
V
IH
V
IL
SENSE Input:
V
TH(SENSE)
R
SENSE
THRESHOLD Input:
Supply Voltage
Supply Current
3.0
—
—
90
5.5
150
V
μ
A
CLEAR Logic Input High Level
CLEAR Logic Input Low Level
0.8V
DD
—
—
—
—
V
V
0.2V
DD
SENSE Input Level Threshold Voltage
SENSE Input Resistance
—
—
124
50
—
—
mV
k
THRESHOLD Input Voltage Minimum
THRESHOLD Input Voltage Maximum
THRESHOLD Input Resistance
Programmed Fan Speed Alert Accuracy
(1)
ALERT Output:
V
LOW
ALERT Output Low Voltage
t
DELAY
ALERT Output Delay Time
Note 1:
The TC670 will operate properly over the entire power supply range of 3.0V to 5.5V. As V
DD
varies from 3.0V, accuracy will degrade
based on the percentage of V
DD
as shown in Section 3.0.
—
—
—
-10
0.0
2.4
100
—
—
—
—
+10
V
V
M
%
ALERT
ACC
V
DD
= 3.0V
—
—
—
176
0.3
—
V
I
SINK
= 2.5 mA
ms
Electrical Characteristics:
Unless otherwise specified, all limits are specified for -40°C to +85°C and V
DD
= 3.0V to 5.5V
Symbol
Parameters
Min
Typ
Max
Unit
Conditions
Temperature Ranges:
T
A
T
A
Thermal Package Resistances:
θ
JA
Thermal Resistance, 6L-SOT-23
Specified Temperature Range
Operating Temperature Range
-40
-40
—
—
+85
+85
°C
°C
—
230
—
°C/W
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