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參數(shù)資料
| 型號： | LV8804V |
| 廠商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分類： | 運動控制電子 |
| 英文描述： | BRUSH DC MOTOR CONTROLLER, 1.2 A, PDSO36 |
| 封裝： | 0.275 INCH, SSOP-36 |
| 文件頁數(shù)： | 9/10頁 |
| 文件大小： | 112K |
| 代理商： | LV8804V |
LV8804V
No.A1407-8/10
Application Circuit Example
*1. Power supply and GND wiring
The GND is connected to the control circuit power supply system.
*2. Power-side power stabilization capacitor
For the power-side power stabilization capacitor, use a capacitor of 10
F or more.
Connect the capacitor between VCC and GND with a thick and along the shortest possible route.
The VCC pins (pins 32, 33, 34, and 35) must be short-circuited on the print pattern.
The GND pins (pins 18 and 19) and the SUB_GND pin (pin 23) must be short-circuited on the print pattern.
*3. COMIN and FIL pins
These pins are used to connect the filter capacitor. The LV8804 uses the back EMF signal generated when the motor is
running to detect the information on the rotor position. The IC determines the timing at which the output block applies
current to the motor based on the position information obtained here. Insert a filter capacitor with a capacitance
ranging from 1,000pF to 10,000pF (reference value) between the COMIN pin and FIL pin to prevent any motor startup
miss-operation that is caused by noise. However, care must be taken since an excessively high capacitance will give
rise to deterioration in efficiency and delays in the output power-on timing while the motor is running at high speed.
Furthermore, connect the capacitor between the COMIN pin and FIL pin as close as possible in order to avoid the
effects of noise from other sources.
*4. CT pin
This pin is used to connect the lock detection capacitor.
The constant-current charging and constant-current discharging circuits incorporated causes locking when the pin
voltage reaches 2.5V, and releasing the lock protection when it drops to 0.5V. This pin must be connected to the GND
when it is not going to be used.
PWM
68k
10k
1
F/10V
*9
0.1
F
*9
0.1
F
*8
*2
10
F/25V
47k
47k
1
F
*4
1
F
*6
1
F
*7
1000pF
*5
0.25
*3
0.01
F
VG
CP
CPC
VREG
MINSP
CTL
FR
CT
SOFTST
OSC
UO
VO
WO
COM
COMIN
FIL
FG
1/2FG
RD
RF
VCC
GND SUB
GND
*1
22k
RRD=10k to 100k
RFG, R1/2FG
=10k to 100k
27k
47k
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