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參數(shù)資料
| 型號： | AM5669 |
| 廠商： | BCD Semiconductor Manufacturing Limited |
| 英文描述： | 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER |
| 中文描述： | 5通道馬達(dá)驅(qū)動DVD播放器 |
| 文件頁數(shù)： | 12/14頁 |
| 文件大?。?/td> | 141K |
| 代理商： | AM5669 |
Preliminary Datasheet
12
Mar. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
5-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5669
Application Information
FWD
(pin6)
REV
(pin7)
VOTR+
(pin10)
VOTR-
(pin9)
Function
L
L
OPEN
OPEN
Open
mode
L
H
L
H
Reverse
mode
H
L
H
L
Forward
mode
H
H
L
L
Brake
mode
1. The built-in thermal shutdown circuit mutes the
output current when the chip temperature reaches
175
o
C
(Typ). The hysteresis is set to 30
o
C
(Typ), so the
circuit will start up again when the chip temperature
falls to 145
o
C
(Typ).
2. In case mute pin voltage is under 0.5V or this pin is
not connected, output current is muted (except for tray
motor driver). Mute pin voltage should be more than
2.0V for normal application.
3. Bias pin (pin 27) should be pulled up to more than
1.2V. In case the bias pin voltage is pulled down below
0.9V (Typ), the
output current is muted.
4. Insert the bypass capacitor (about 0.1
μ
F) between
VCC1,2 pin and GND pin as close as possible to this
chip.
5. Heat dissipation fins are attached to the GND on
the inside of the package. Make sure to connect them
to the external GND.
6. Tray driver logic input:
Input circuit of pins 6 and 7 is designed to avoid
simultaneous activation of upper and lower output
tray; however, in order to improve reliability, apply
motor forward/reverse input once through open mode.
We recommend time period for open longer than
10msec.
"H" side output voltage on output pins (VOTR+ or
VOTR-) varies depending on output control terminal
for tray (pin 21). "H" side output voltage is set to three
times (9.2dB Typ) the voltage of VCTL (pin 21). And,
"L" side output voltage is equal to output saturation
voltage.
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