參數(shù)資料
型號： TC647EPA
廠商： Microchip Technology Inc.
英文描述： PWM Fan Speed Controller with FanSense Technology
中文描述： 與FanSense PWM風扇速度控制器技術
文件頁數(shù)： 4/28頁
文件大?。?/td> 478K
代理商： TC647EPA
TC647
DS21447C-page 4
2002 Microchip Technology Inc.
2.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
PIN FUNCTION TABLE
2.1
Analog Input (V
IN
)
The thermistor network (or other temperature sensor)
connects to the V
IN
input. A voltage range of 1.25V to
2.65V (typical) on this pin drives an active duty cycle of
0% to 100% on the V
OUT
pin.
2.2
Analog Output (C
F
)
C
F
is the positive terminal for the PWM ramp generator
timing capacitor. The recommended C
F
is 1 μF for
30 Hz PWM operation.
2.3
Analog Input (V
MIN
)
An external resistor divider connected to the V
MIN
input
sets the minimum fan speed by fixing the minimum
PWM duty cycle (1.25V to 2.65V = 0% to 100%, typi-
cal). The TC647 enters shutdown mode when V
MIN
≤
V
SHDN
. During shutdown, the FAULT output is inactive
and supply current falls to 25 μA (typical). The TC647
exits shutdown mode when V
MIN
≥
V
REL
. See
Section 5.0, “Typical Applications”, for more details.
2.4
Ground (GND)
GND denotes the ground terminal.
2.5
Analog Input (SENSE)
Pulses are detected at the SENSE pin as fan rotation
chops the current through a sense resistor. The
absence of pulses indicates a fault.
2.6
Digital Output (FAULT)
The FAULT line goes low to indicate a fault condition.
When FAULT goes low due to a fan fault condition, the
device is latched in shutdown mode until deliberately
cleared or until power is cycled. FAULT may be con-
nected to V
MIN
if a hard shutdown is desired.
2.7
Digital Output (V
OUT
)
V
OUT
is an active high complimentary output that drives
the base of an external NPN transistor (via an appropri-
ate base resistor) or the gate of an N-channel MOS-
FET. This output has asymmetrical drive (see
Section 1.0, “Electrical Characteristics”).
2.8
Power Supply Input (V
DD
)
V
DD
may be independent of the fan’s power supply
(see Section 1.0, “Electrical Characteristics”).
Pin No.
Symbol
Description
1
2
3
4
5
6
7
8
V
IN
C
F
V
MIN
GND
SENSE
FAULT
V
OUT
V
DD
Analog Input
Analog Output
Analog Input
Ground Terminal
Analog Input
Digital (Open Collector) Output
Digital Output
Power Supply Input
相關PDF資料
PDF描述
TC647EUA PWM Fan Speed Controller with FanSense Technology
TC648VOA Fan Speed Controller with Auto-Shutdown and Over-Temperature Alert
TC648 Fan Speed Controller with Auto-Shutdown and Over-Temperature Alert
TC648E Fan Speed Controller with Auto-Shutdown and Over-Temperature Alert
TC648VPA Fan Speed Controller with Auto-Shutdown and Over-Temperature Alert
相關代理商/技術參數(shù)
參數(shù)描述
TC647EUA 功能描述:馬達/運動/點火控制器和驅(qū)動器 w/Fault Dtct RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
TC647EUATR 功能描述:馬達/運動/點火控制器和驅(qū)動器 w/Fault Dtct RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
TC647VOA 功能描述:馬達/運動/點火控制器和驅(qū)動器 w/Fault Dtct RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
TC647VOA 制造商:Microchip Technology Inc 功能描述:Fan Management Controller IC Package/Cas
TC647VOATR 功能描述:馬達/運動/點火控制器和驅(qū)動器 w/Fault Dtct RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
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