LB8108M Overview
EN4946A Monolithic Digital IC LB8108M Actuator Driver for Portable CD Players Applications The LB8108M is an actuator driver for use in portable CD players that operate at a power supply voltage of 2.4 (two nicad batteries) or 3.0 V (two dry-cell batteries).
LB8108M Key Features
- Includes four H bridge driver channels to drive the four CD player actuators (focus coil, tracking coil, spindle motor a
- Includes a 3.9 V (typical) step-up circuit to supply the DSP, ASP and microprocessor used in the CD player. Also include
- Built-in oscillator circuit for these converters (external resistor and capacitor required)
- Detects the maximum value of the four driver outputs and supplies a voltage slightly higher than that voltage to the H b
- Built-in laser diode drive and APC circuits (IOmax ≈ 100 mA. This function can be turned off by a control voltage input.
- The sled motor drive circuit operates in 2 modes, that are normal V-type drive mode and step drive mode which is highly
- A step-down converter that convert external input voltage that exceed 5 V into 3.5 V VCC operates when an external volta
- Built-in microprocessor reset circuit (external capacitor required) (This circuit detects the VCD pin voltage and operat
- Two built-in battery check parator channels
- System start and stop under microprocessor control
LB8108M Applications
- Includes four H bridge driver channels to drive the four CD player actuators (focus coil, tracking coil, spindle motor and sled motor). (output dynamic range: m
- Includes a 3.9 V (typical) step-up circuit to supply the DSP, ASP and microprocessor used in the CD player. Also includes another voltage step-up circuit whose
- Built-in oscillator circuit for these converters (external resistor and capacitor required)
- Detects the maximum value of the four driver outputs and supplies a voltage slightly higher than that voltage to the H bridge block in each of the four channels
- Built-in laser diode drive and APC circuits (IOmax ≈ 100 mA. This function can be turned off by a control voltage input. It is posed of step-up converter and se
- The sled motor drive circuit operates in 2 modes, that are normal V-type drive mode and step drive mode which is highly effective in reducing power dissipation
- A step-down converter that convert external input voltage that exceed 5 V into 3.5 V VCC operates when an external voltage input is applied. This simplifies pow
- Built-in microprocessor reset circuit (external capacitor required) (This circuit detects the VCD pin voltage and operates a reset voltage with an H-side of 2.2