ROHM BA5937AFP Datasheet

Optical disc ICs

4-channel BTL driver for CD players

BA5937AFP

The BA5937AFP is a 4-channel BTL driver developed for use with CD players. In addition to internal drivers for the focus
coil, tracking coil, and sled motor, it also contains a driver for the loading motor.

FApplications
CD-ROM, CD players

FFeatures

1) Perfect for compact applications with the use of the
HSOP 28-pin power package.

2) Internal thermal shutdown circuit.

3) Gain is adjustable with externally connected resistor.
(For channels 1, 3, and 4.)

FAbsolute maximum ratings (Ta = 25_C)

4) External mute pin enables the muting of the output
current for channels 1 and 4.

5) Power supply is divided into three systems
(V

CC1 = ch1 and ch4, VCC2 = ch2 and current source,

CC3 = ch3).

V

FRecommended operating conditions (Ta = 25_C)

632

Optical disc ICs BA5937AFP

Block diagram

Pin descriptions

633

Optical disc ICs BA5937AFP

Input / output circuits

634