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LA6538T データシート(PDF) 3 Page - Sanyo Semicon Device

部品番号 LA6538T
部品情報  Single-Phase Full-Wave Fan Motor Driver
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メーカー  SANYO [Sanyo Semicon Device]
ホームページ  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LA6538T データシート(HTML) 3 Page - Sanyo Semicon Device

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No. 6518-3/6
LA6538T
Pin Assignment
IN+
1
2
3
4
HB
8
7
6
5
IN--
OUT1
FG
VCC
OUT2
GND
Top view
LA6538T
ILA00206
Sample Application Circuit
IN+
HB
IN--
FG
R2
R2
OUT1
OUT2
Di
VCC
VCC
Cr
*1
*2
R1
GND
ILA00207
ILA00208
H
*3
*4
H
Notes: 1. When the diode Di is used to prevent device destruction from reverse connection, the capacitor Cr must be inserted to assure a path for
regenerative currents. Similarly, if there are no nearby capacitors on the fan power supply line, the capacitor Cr is also required to increase
reliability.
2. The Hall element is biased at a constant voltage of approximately 2.1 V from the HB pin. Thus the LA6538T provides a stable Hall output with
excellent temperature characteristics. The resistor R1 adjusts the Hall output amplitude.
The LA6538T implements linear drive by amplifying the Hall output and applying voltage control to the motor coils. Startup characteristics and
efficiency are improved by using a higher Hall device output. However, the motor can be made to operate more quietly by adjusting the Hall device.
3. If the Hall bias is taken from VCC, bias the Hall device at 1/2 VCC as shown in the figure.
4. This pin must be left open if unused.
Devices on the
printed circuit board
Block Diagram
180 k
500
ILA00209
HB
FG
IN+
IN--
GND
OUT1
OUT2
VCC
H
180 k
500
2.1 VRG


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