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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)： | 6/9頁(yè) |
| 文件大?。?/td> | 129K |
| 代理商： | LB8109M |
Continued from preceding page.
Pin No.
6
Symbol
Equivalent circuit
Function
CHG MON
Constant-current feedback input
pin for the charging circuit. The
charging current is determined
by comparing this input voltage
and the internal reference
voltage (0.35 V typ.).
Connection pin for the resistor
that is used to set the voltage for
the external step-down circuit.
This prevents invalid current at
no power supply.
GND pin for small-signal block.
(GND except output power Tr)
Input pin for the free-running
oscillation circuit that is used to
operate the PWM step-down
circuit and step-up circuit. The
oscillating frequency is
determined by external CR.
13
EXTBASE
7
GND
8
OSC
9
OSCPWR
CR power supply pin that is
used to prevent invalid current
for the oscillation circuit in
standby mode.
11
V
EXT
Voltage feedback input pin for
the external power supply
step-down circuit. V
CC
for
playback is set by comparing
this pin voltage with the internal
reference voltage (1.28 V typ.).
Voltage feedback input pin for
the external power supply
step-down circuit. V
CC
for
charging is set by comparing this
pin voltage with the internal
reference voltage (1.28 V typ.).
Voltage feedback input pin for
the step-up circuit. The step-up
voltage is determined by
comparing this pin voltage with
the internal reference voltage
(1.28 V typ.).
12
V
EXTCHG
18
V
ASP
19
UPBASE
Connection pin for the resistor
that is used to set the voltage of
the step-up circuit. This prevents
invalid current in standby mode.
Continued on next page.
LB8109M
No.5233-6/9
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