EUM6179 Datasheet, PDF (9/11 Pages) Eutech Microelectronics Inc – Single-Phase Full-Wave Motor Driver for Fan Motor

EUM6179/6179A
Notes
Absolute maximum ratings
This product is produced with strict quality control, but
destroyed in using exceed the absolute maximum ratings.
Once IC destroyed, failure mode cannot be defined ( like
short-mode or open-mode). Therefore, physical security
countermeasure, like fuse, is to be given when a specific
mode to exceed the absolute maximum ratings is
considered.
GND potential
The GND terminal should be the location of the lowest
voltage on the chip.
Thermal design
The thermal design should allow enough margin for
actual power dissipation.
Mounting failures
Mounting failures, such as misdirection or
mismount, may destroy the device. The electrical
short caused by falling particle, between outputs;
power supply and output; or output and ground,
may damage the device.
Figure 4.
Please adjust Hall input voltage by value of R1 so that
hall signal contains amplitude input within range
0.4V~Vcc-1.1V. In case Vcc noise influence the hall
signal by board wiring pattern, please connect
capacitor C1 like Fig 4. In the case of long board
wiring pattern from hall element to hall signal input
terminal, please connect capacitor C2 like Fig 4.
Electromagnetic field
A strong electromagnetic field may cause malfunction.
ASO
Please consider output transistors not to exceed
absolute maximum ratings and ASO.
Hall signal input terminals (H+
Figure 3. Hall input voltage range
DS6179 Ver1.0 Feb. 2007
Figure 5. Difference of output signal depending on
hall input signal
The output signal of this IC is the amplified hall input
signal, therefore, the output signal depends on hall
input signal. When the amplitude of hall signal is small,
the output signal becomes gentle. Oppositely, the
amplitude is big, the output signal becomes steep. The
hall-input/output gain is about 300 times (TYP). So,
please input the suitable signal to make an adequate
amplitude of the output signal.
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