LB8107M View Datasheet(PDF) - SANYO -> Panasonic

Part Name

Description

View to exact match

LB8107M

Portable CD Player Actuator Driver

SANYO -> Panasonic 

LB8107M

The figure below shows the form of the I/O transmission characteristics.

That is, the LB8107M implements a polarity reversing V-type drive

with respect to the input signals (from the DSP) referenced to

VREF1.

The transmission gain ∆VO/∆VIN is 7.95 (typical) and the

LB8107M provides a region (dead band) around VREF1 where the

output does not change with the input. (The dead band is VREF1 ±

100 mV (maximum).)

The LB8107M provides excellent gain precision since the a

feedback structure is adopted in the drive circuits.

2. Sled motor step drive switching (selected when the SLS pin is low)

While it goes without saying that the V-type drive described above can be used for sled motor drive, the LB8107M

also supports a step drive scheme to reduce sled motor drive power.

Since a signal that is generated by integrating the tracking output is usually used as the sled motor control input, step

drive attempts to drive the sled motor only during certain periods by providing a sled motor start command from the

sled motor control input and a sled motor stop command from the tracking control input.

The start and stop levels are set by an external resistor connected between the VREF1 pin and the REFO pin.

Note that for inputs that are lower than VREF1 this system operates

normally regardless of the SLS pin.

Also, as will be discussed later, the maximum voltage is supplied to

the H bridge in step drive mode.

No. 4851-7/10

Share Link: