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TC651 Datasheet(PDF) 3 Page - STMicroelectronics

No. de pieza TC651
Descripción Electrónicos  Tiny Integrated Temperature Sensor & Brushless DC Fan Controller with Overtemperature Alert
Download  16 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TC651 Datasheet(HTML) 3 Page - STMicroelectronics

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 2004 Microchip Technology Inc.
DS21450C-page 3
TC650/TC651
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings†
Input Voltage (VDD to GND) ...................................+6V
Output Voltage (OUT to GND) ................................. 6V
Voltage On Any Pin ....... (GND – 0.3V) to (VDD + 0.3V)
Operating Temperature Range ......... –40
°C to +125°C
Storage Temperature ........................ –65
°C to +150°C
† Notice: Stresses above those listed under "Absolute Maxi-
mum 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.
DC CHARACTERISTICS
Electrical Specifications: Unless otherwise specified, VDD = 2.8V to 5.5V, SHDN = VDD, TA = –40°C to +125°C.
Parameters
Sym
Min
Typ
Max
Units
Conditions
Supply Voltage
VDD
2.8
5.5
V
Supply Current
IDD
—50
90
µA
PWM, TOVER are open
SHDN Input
SHDN Input High Threshold
VIH
65
%VDD
SHDN Input Low Threshold
VIL
——
15
%VDD
PWM Output
PWM Output Low Voltage
VOL
0.3
V
ISINK = 1 mA
PWM Output High Voltage
VOH
VDD – 0.5
V
ISOURCE = 5 mA
PWM Rise Time
tR
—10
µs
IOH = 5 mA, 1 nF from
PWM to GND
PWM Fall Time
tF
—10
µs
IOL = 1 mA, 1 nF from
PWM to GND
PWM Frequency
fOUT
10
15
Hz
Start-up Time
tSTARTUP
32/fOUT
—sec
VDD Rises from GND
or SHDN Released
Temperature Accuracy
High Temperature Accuracy
TH ACC
TH – 3
TH
TH + 3
°C
Note 1
Temperature Range Accuracy (TH –TL) ACC
–1.0
+1.0
°C
(TH – TL) ≤ 20°C
–2.5
+2.5
°C
(TH – TL) ≥ 20°C
Auto-shutdown Hysteresis
THYST
—(TH -TL)/5
°C
TC651 Only
TOVER Output
TOVER Output High Voltage
VHIGH
VDD – 0.5
V
ISOURCE = 1.2 mA
TOVER Output Low Voltage
VLOW
0.4
V
ISINK = 2.5 mA
Absolute Accuracy
TOVER ACC
—TH + 10
°C
At Trip Point
Trip Point Hysteresis
TOVER HYST
—5
°C
Note 1:
Transition from 90% to 100% Duty Cycle.


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