LB8109M
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).
Package Dimensions unit : mm
3148-QIP44MA
[LB8109M]
SANYO : QIP44MA
Functions and Features
. H bridge drivers (output dynamic range maximum is about 2 V) on chip for four channels to drive each CD actuator (the focus the tracking coil, the spindle motor, and the sled motor). . coil, 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...
