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參數(shù)資料
| 型號(hào)： | LA6538T |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 0.3 A, PDSO8 |
| 封裝： | 3 X 4.90 MM, 0.93 MM HEIGHT, MSOP-8 |
| 文件頁數(shù)： | 4/7頁 |
| 文件大?。?/td> | 64K |
| 代理商： | LA6538T |
LA6538T
No.6518-4/7
Sample Application Circuit
Note: 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 2.1V 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.
Block Diagram
IN+
HB
IN--
FG
R2
OUT1
OUT2
Di
VCC
Cr
*1
*2
R1
GND
ILA00207
ILA00208
H
*3
*4
H
Devices on the
printed circuit board
180k
500
ILA00209
HB
FG
IN+
IN-
GND
OUT1 OUT2
VCC
H
180k
500
2.1 VRG
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