參數(shù)資料
型號(hào)： LB8109M
廠商： Sanyo Electric Co.,Ltd.
英文描述： Actuator Driver for Portable CD Players
中文描述： 執(zhí)行器驅(qū)動(dòng)便攜式CD播放器
文件頁(yè)數(shù)： 7/9頁(yè)
文件大?。?/td> 129K
代理商： LB8109M
Continued from preceding page.
Pin No.
20
Symbol
Equivalent circuit
Function
VZ
Zener diode
Reference voltage
startup circuit
S/S function
shant
External
Input pin for start-up circuit when
an external voltage input is
applied. The external voltage
input is applied through a
resistor inserted in series. The
voltage is basically determined
by the Zener diode + 2V
BE
; this
pin has a current draining
capacity up to 20 mA.
24
S/S
LB8109M start-up input. (Start
on a low-level input.)
21
OPIN
Inverting input pin for internal OP
amplifier.
22
OPIN
+
Noninverting input pin for internal
OP amplifier.
23
OPOUT
Output pin for internal OP
amplifier. The output circuit type
is ‘‘push-pull.’’
14
CHG-ON
Pin for selecting battery charging
when external voltage input is
applied. This pin determines the
drop voltage for the external
voltage input. When low, the
drop voltage set by VEXT is
selected; when high, the drop
voltage set by VEXT-CHG is
selected.
Input pin for simultaneously
muting the drivers for the four
channels. (High: mute)
Pin for switching the spindle
driver transfer gain between 8.3
dB and 14.8 dB (typ. value
each). (Low: high gain)
Pin for switching the sled driver
between V-type control and step
control. (High: V-type control;
low: step control)
Power supply voltage pin.
Threshold input pin for driving
the sled motor stepwise. Both
the positive and negative step
levels (with positive-negative
symmetry) are determined by the
voltage differential between the
pin voltage and the ASPREF pin
voltage.
25
MUTE
26
G-SELECT
27
SLMODE
28
29
33
V
CC
SLREF
IN4
39
PGND
Output Tr. GND for the four-
channel H bridge drivers. This
pin is not internally connected to
the small-signal system GND.
Continued on next page.
LB8109M
No.5233-7/9
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