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參數(shù)資料
| 型號： | LB8109M |
| 元件分類： | 運動控制電子 |
| 英文描述： | DISK DRIVE MOTOR CONTROLLER, 0.8 A, PQFP44 |
| 封裝： | QFP-44 |
| 文件頁數(shù)： | 1/9頁 |
| 文件大?。?/td> | 640K |
| 代理商： | LB8109M |
LB8109M
No. 5233-1/9
Overview
The LB8109M is an actuator driver IC designed for portable
CD players that operate at 2.4 V (two Ni-Cd batteries) or 3.0 V
(two dry cells).
Functions and Features
Ordering number: ENN5233A
Actuator Driver for Portable CD Players
LB8109M
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
Monolithic Digital IC
82599TH(II)/13096HA(II)No.5233-1/9
H bridge drivers (output dynamic range maximum is about 2
V) on chip for four channels to drive each CD actuator (the
focus coil, the tracking coil, the spindle motor, and the sled
motor).
Step-up circuit (voltage to be set by an external resistor) on
chip that is used to apply voltage to the CD DSP, ASP and
microcontroller. Center-tap coil for step-up circuit makes it
possible to supply the driver control voltage. (However, the
drive Tr, L, C, and Di are all external.)
Oscillator circuits for each converter on chip. (C and R are
external.)
Four-channel driver control output is divided into two groups
(the focus/tracking group and the spindle/sled
group) for minimum loss at double-speed play. Higher
operating voltage in each group is converted to power supply
of each 2ch H bridge driver by PMW conversion. (However,
the PWM PNP-Tr, NPN-Tr, L, C, and Di are all external.)
Sled motor driving mode is switchable between step drive
mode for lower power dissipation, and normal V-type drive
mode. (The other three channels are fixed to V-type.)
In the spindle motor drive circuit, the control gain can be
doubled for double-speed play. (Switching port provided.)
PWM step-down circuit for external power operates when
external power (8 V or more) is supplied. In this function,
external power is converted to VCC power supply, and two type
voltage setting is possible. In play mode, step-up voltage for
DSP has to be set lower than VCC , but in charging the battery,
it has to be set higher than VCC. So step-down voltage (VCC )
setting of two types is possible with two pairs of external
resistor. (Switching port is provided.) (However, the PWM
PNP-Tr, NPN-Tr, L, C, and Di are all external.)
Battery pulse charging function on chip. (However, the drive NPN-
Tr, and the current feedback C and R are external.)
Having one 358-type OP amplifier on chip, it is suitable for a
variety of applications. (Power supply: VCD )
The system can be started up and stopped by outputs from the
microcontroller.
Actuator muting function on chip (for all four channels simulta-
neously).
Thermal shutdown circuit on chip.
unit : mm
3148-QFP44MA
[LB8109M]
SANYO : QFP44MA (QIP44MA)
2.8max
0.8
11.6
0.35
10.0
13.2
1.0
1
11
12
22
23
33
34
44
1.0
1.6
0.8
2.5
0.2
0.1
10.0
13.2
1.0
1.6
0.8
Package Dimensions
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