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TC651 Fiches technique(PDF) 3 Page - Microchip Technology

No de pièce TC651
Description  Tiny Integrated Temperature Sensor & Brushless DC Fan Controller with Over-Temperature Alert
Download  14 Pages
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Fabricant  MICROCHIP [Microchip Technology]
Site Internet  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

TC651 Fiches technique(HTML) 3 Page - Microchip Technology

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© 2002 Microchip Technology Inc.
DS21450B-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)
Package Thermal Resistance (
θJA ) ..............250°C/W
Operating Temperature Range .......... -40
°Cto+125°C
Storage Temperature ......................... -65
°Cto+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.
TC650/TC651 ELECTRICAL SPECIFICATIONS
Note 1: Transition from 90% to 100% Duty Cycle.
Electrical Characteristics: VDD = 2.8V to 5.5V, SHDN =VDD,TA =-40°Cto 125°C unless otherwise specified.
Symbol
Parameter
Min
Typ.
Max
Units
Test Conditions
VDD
Supply Voltage
2.8
5.5
V
IDD
Supply Current
50
90
µAPWM, T
OVER are open
SHDN Input
VIH
SHDN Input High Threshold
65
%VDD
VIL
SHDN Input Low Threshold
15
%VDD
PWM Output
VOL
PWM Output Low Voltage
0.3
V
ISINK =1mA
VOH
PWM Output High Voltage
VDD -0.5
V
ISOURCE =5mA
tR
PWM Rise Time
10
µsec IOH =5mA,1nF from
PWM to GND
tF
PWM Fall Time
10
µsec IOL =1mA,1nF from
PWM to GND
fOUT
PWM Frequency
10
15
Hz
tSTARTUP
Start-up Time
32/fOUT
—sec
VDD Rises from GND,
or SHDN Released
Temperature Accuracy
TH ACC
High Temperature Accuracy
TH –3
TH
TH +3
°C
Note 1
(TH –TL) ACC Temp. Range Accuracy
-1.0
+1.0
°C(TH -TL) ≤ 20°C
-2.5
+2.5
°C(TH -TL) ≥ 20°C
THYST
Auto-shutdown Hysteresis
(TH -TL)/5
°CTC651 Only
TOVER Output
VHIGH
TOVER Output High Voltage
VDD -0.5
V
ISOURCE =1.2mA
VLOW
TOVER Output Low Voltage
0.4
V
ISINK =2.5mA
TOVER ACC
Absolute Accuracy
TH +10
°C
At Trip Point
TOVER HYST
Trip Point Hysteresis
5
°C


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