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BA5936S

Rohm
Part Number BA5936S
Manufacturer Rohm
Description 6-channel BTL driver for CD players
Published Apr 1, 2005
Detailed Description Optical disc ICs 6-channel BTL driver for CD players BA5936S The BA5936S is a 6-channel BTL driver developed for use as...
Datasheet PDF File BA5936S PDF File

BA5936S
BA5936S

Overview
Optical disc ICs 6-channel BTL driver for CD players BA5936S The BA5936S is a 6-channel BTL driver developed for use as the sled motor, spindle motor, actuator, and loading motor driver for CD players.
It contains a current limiting function and 5V regulator for compatibility in a wide range of applications.
FApplications CD players FFeatures 1) 6-channel BTL driver for CD players.
Contains 4 channels for the focus coil, tracking coil, sled motor, and spindle motor drives; and 2 channels for the loading motor driver.
2) Internal 5V regulator with a earth protection circuit (requires an external PNP transistor).
FAbsolute maximum ratings (Ta = 25_C) 3) Internal mute circuit (enables the muting of the driver outputs from all but the loading driver, and muting of the regulator output).
4) Internal thermal shutdown circuit.
FRecommended operating conditions (Ta = 25_C) 708 Optical disc ICs FBlock diagram BA5936S 709 Optical disc ICs FPin descriptions BA5936S FInput / output circuits 710 Optical disc ICs BA5936S 711 Optical disc ICs BA5936S FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 8V, RIN = 10kΩ, RL = 8Ω, VBIAS = 2.
5V) 712 Optical disc ICs FMeasurement circuit BA5936S 713 Optical disc ICs FApplication example BA5936S 714 Optical disc ICs FOperation notes (1) Output mode switch for loading motor driver (VCC = 8V) BA5936S (2) Loading motor driver voltage setting (ex: forward mode) (3) The BA5936S contains a thermal shutdown circuit.
When the chip temperature reaches 175_C (Typ.
), the output current is muted.
If the chip temperature then drops below 150_C (Typ.
), then the mute is released.
(4) By having the mute pin (pin 27) voltage open or lowered to 0.
5V or below, the output currents (channels 1, 2, 4, and 5, and regulator) can be muted.
For normal conditions, have the voltage at pin 27 pull-up to 2V.
(5) If the voltage of the bias pin (pin 24) drops below 1.
4V (Typ.
), the drivers (channels 1, 2, 4, and 5) are mut...


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