APX9266 데이터 시트보기 (PDF) - Anpec Electronics
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APX9266 Datasheet PDF : 14 Pages
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APX9266
Truth Table
Input
Output
IN-
IN+
PWM
CT
OUT1
OUT2
FG
L
H
H
H
H
L
L
L
H
L
L
L
L
H
L
L
L
H
OFF
L
OFF
L
L
L
H
L
-
H
H
L
L
L
OFF
L
OFF
-
-
L
-
OFF
OFF
OFF
Mode
Operation Mode
Lock Mode
Standby Mode
Application Information
Input Protection Diode & Capacitor
It should be added a protection diode (D1) to protect the
damage from the power reverse connection. However,
the protection diode will cause a voltage drop on the
supply voltage. The current rating of the diode must be
larger than the maximum output current. Connecting
a capacitor (C1) between VCC and GND is used for a
noise reduction purpose ( See the Application Circuit).
HB pin & Hall input
1.3V reference is for hall element bias. In case VCC
influences the hall signal by board wiring pattern, please
connect 0.1µF capacitor between HB and GND. The
supply current is just around 130µA at PWM=0 standby
mode. This feature will shutdown HB, Amplifier and FG.
The output signal of this IC is the amplified hall input
signal, therefore, the output signal depends on hall input.
When the hall input is small, the output signal becomes
gentle. Oppositely, the input signal is large, the output
becomes steep (See Figure 3. Different of output signal
depending on the shape of Hall input signal).The input/
output gain is 48dB (typ.). Therefore, please adjust the
amplitude of hall input to meet the adequate output
voltage. In the case of long board wiring pattern from
hall element to hall signal input terminal, please connect a
capacitor between IN+ and IN-.
(IN+)-(IN-)
OUT1
(IN+)-(IN-)
OUT1
Figure 3. Different of output signal depending on the shape of
Hall input signal
PWM input
It is possible to change rotation speed of the motor by
switching high side output transistor. The on-duty of
switching depends on the input signal to PWM terminal.
(See Figure 4. PWM Input Waveform)
Copyright © ANPEC Electronics Corp.
9
Rev. A.4 - Mar., 2008
www.anpec.com.tw
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