參數(shù)資料
型號(hào): TA8473FNG
元件分類(lèi): 運(yùn)動(dòng)控制電子
英文描述: BRUSH DC MOTOR CONTROLLER, 1.2 A, PDSO16
封裝: 0.225 INCH, 0.65 MM PITCH, LEAD FREE, PLASTIC, SSOP-16
文件頁(yè)數(shù): 9/13頁(yè)
文件大?。?/td> 411K
代理商: TA8473FNG
TA8473F/FG/FN/FNG
2006-3-2
5
FG AND RD OUTPUTS
Both the FG and RD outputs are the open collector outputs.
The FG output is pulse proportional to the number of revolutions (the cycle is the same as OUT B) and the RD
output is at the GND level (actually, at Vsat (RD) level) when the motor is being driven and the RD output at
the potential level that is to be applied to the RD terminal as shown in Fig.2 is output when the motor is kept
restrained.
AUTOMATIC SELF ROTATION RECOVERY CIRCUIT
If the rotation of the fan motor is forced to stop by any physical power, the driving coil may be burnt as
inducing voltage caused when the motor is running disappears and large current flows to the driving coil.
Therefore, it becomes necessary to provide the fan motor with a circuit to prevent the driving coil from being
burned by detecting the forced stop of the motor rotation from the outside by some method and a circuit to
automatically rotate the motor when it is released from the restraint.
The TA8473F/FG and TA8473FN/FNG are ICs that have cleared the above problems by the burning preventive
automatic return circuit.
Fig. 2
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