View lb8107m datasheet:

Ordering number : EN4851 Monolithic Digital IC LB8107M Portable CD Player Actuator Driver Overview Package Dimensions The LB8107M is a portable CD player mechanism unit: mm actuator driver. It operates on a 2.4 V power supply, which 3148-QFP44MA corresponds to two rechargeable Ni-Cd cells. [LB8107M] Functions and Features • Four H bridge driver channels on chip, one each for the four CD actuators; focus coil, tracking coil, spindle motor and sled motor • Built-in step-up circuit to power the associated 5.0 V CD LSIs, including the DSP and microprocessor. (The drive transistor, L, Di and C are external components: step-up circuit) Io 150 mA, maximum • Extremely low loss drive can be achieved, since the LB8107M detects the largest signal of the four drive channels and sup