參數(shù)資料
型號(hào)： TC648BEPA
元件分類(lèi)： 運(yùn)動(dòng)控制電子
英文描述： BRUSHLESS DC MOTOR CONTROLLER, PDIP8
封裝： 0.300 INCH, PLASTIC, DIP-8
文件頁(yè)數(shù)： 2/36頁(yè)
文件大小： 704K
代理商： TC648BEPA
TC646B/TC648B/TC649B
DS21755B-page 10
2003 Microchip Technology Inc.
3.0
PIN FUNCTIONS
The descriptions of the pins are given in Table 3-1.
TABLE 3-1:
PIN FUNCTION TABLE
3.1
Analog Input (VIN)
The thermistor network (or other temperature sensor)
connects to VIN. A voltage range of 1.20V to 2.60V (typ-
ical) on this pin drives an active duty cycle of 0% to
100% on the VOUT pin. The TC646B, TC648B and
TC649B
devices
enter
shutdown
mode
when
0
≤ VIN ≤ VSHDN. During shutdown, the FAULT/OTF
output is inactive and supply current falls to 30 A
(typical).
3.2
Analog Output (CF)
CF is the positive terminal for the PWM ramp generator
timing capacitor. The recommended value for the CF
capacitor is 1.0 F for 30 Hz PWM operation.
3.3
Analog Input (VAS)
An external resistor divider connected to VAS sets the
auto-shutdown threshold. Auto-shutdown occurs when
VIN < VAS. The fan is automatically restarted when
VIN > (VAS + VHAS). During auto-shutdown, the
FAULT/OTF output is inactive and supply current falls
to 30 A (typical).
3.4
Analog Input (SENSE)
Pulses are detected at SENSE as fan rotation chops
the current through a sense resistor. The absence of
pulses indicates a fan fault condition.
3.5
Digital (Open-Drain) Output
(FAULT/OTF)
FAULT/OTF goes low to indicate a fault condition.
When FAULT goes low due to a fan fault (TC646B and
TC649B devices), the output will remain low until the
fan fault condition has been removed (16 pulses have
been detected at the SENSE pin in a 32/f period). For
the TC646B and TC648B devices, the FAULT/OTF out-
put will also be asserted when the VIN voltage reaches
the VOTF threshold of 2.62V (typical). This gives an
over-temperature/100% fan speed indication.
3.6
Digital Output (VOUT)
VOUT is an active-high complimentary output that
drives the base of an external NPN transistor (via an
appropriate base resistor) or the gate of an N-channel
MOSFET. This output has asymmetrical drive. During a
fan fault condition, the VOUT output is continuously on.
3.7
Power Supply Input (VDD)
The VDD pin with respect to GND provides power to the
device. This bias supply voltage may be independent of
the fan power supply.
3.8
Ground (GND)
Ground terminal.
3.9
No Connect (NC)
No internal connection.
Pin
Name
Function
1VIN
Analog Input
2CF
Analog Output
3VAS
Analog Input
4
GND
Ground
5
SENSE/NC
Analog Input/No Connect. NC for TC648B.
6FAULT/OTF
Digital (Open-Drain) Output
OTF for TC648B
7VOUT
Digital Output
8VDD
Power Supply Input
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TC648BEPA713 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:PWM Fan Speed Controllers With Auto-Shutdown, Fan Restart and FanSense⑩ Technology for Fault Detection
TC648BEPATR 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:PWM Fan Speed Controllers With Auto-Shutdown, Fan Restart and FanSense⑩ Technology for Fault Detection
TC648BEUA 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 Shtdn & Over-T Alert RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類(lèi)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(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
TC648BEUA713 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 Shtdn & Over-T Alert RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類(lèi)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(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
TC648BEUATR 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:PWM Fan Speed Controllers With Auto-Shutdown, Fan Restart and FanSense⑩ Technology for Fault Detection
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