CD Driver
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Overview
Each PlayStation motherboard contains a BTL-driver IC, driving the spindle motor, sled motor, focus coil and tracking coil. The inputs are driven by the DSP.
All of these are 4-channel BTL drivers.
They naturally run relatively warm (hence the large ground pads for heatsinking), but should never get too hot to touch (->IC or something connected to it is probably defective or shorted). All of these have thermal shutdown as a safety feature.
For the Rohm ICs, datasheets are available online.
ICs used
Rohm
- BA6398FP (PU-7, PU-8 (-11))
- BA6397FP (PU-8 (-21 and up), PU-16)
- BA6392FP (PU-18)
- BA5977FP (PU-20, PU-22, PU-23)
- BA5947FP (PM-41)
Panasonic
- AN8732SB (PU-22, PU-23, PM-41)