BA5931FP Rohm, BA5931FP Datasheet

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BA5931FP

Manufacturer Part Number
BA5931FP
Description
4-channel BTL driver for CD player
Manufacturer
Rohm
Datasheet

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The BA5931FP is a 4-channel BTL driver designed for CD player motors and actuators. The 28-pin HSOP package al-
lows for application miniaturization.
FApplications
CD players, CD-ROM drives
FFeatures
1) Internal drivers for focus coils, tracking coils, spindle
2) HSOP 28-pin package allows for miniaturization of
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions (Ta = 25_C)
278
4-channel BTL driver for CD players
BA5931FP
Optical disc ICs
motors, feed motors and loading.
applications.
3) Low number of external components.
4) Driver gain is adjustable with a single attached resis-
5) Internal thermal shutdown circuit.
tor.

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BA5931FP Summary of contents

Page 1

... Optical disc ICs 4-channel BTL driver for CD players BA5931FP The BA5931FP is a 4-channel BTL driver designed for CD player motors and actuators. The 28-pin HSOP package al- lows for application miniaturization. FApplications CD players, CD-ROM drives FFeatures 1) Internal drivers for focus coils, tracking coils, spindle motors, feed motors and loading ...

Page 2

... Optical disc ICs FBlock diagram FPin descriptions BA5931FP 279 ...

Page 3

... Optical disc ICs FInput / output circuits 280 BA5931FP ...

Page 4

... Optical disc ICs FElectrical characteristics (unless otherwise noted 25_C, V BA5931FP = 8V 2.5V 281 ...

Page 5

... Optical disc ICs FMeasurement circuit 282 BA5931FP ...

Page 6

... Two sys- tems (positive phase and negative phase) are created during conversion, generating BTL output via the driver buffer. BA5931FP 283 ...

Page 7

... Note: The loading output voltage will not exceed the power supply’s maximum output voltage, even if set above this maximum voltage. The example above applies only when setting below the maximum output voltage. Maximum output voltage for the power supply can be output by opening the loading input pin (19 pin). 284 = 8V) CC BA5931FP ...

Page 8

... Optical disc ICs FApplication example BA5931FP 285 ...

Page 9

... Optical disc ICs FOperation notes (1) The BA5931FP has a thermal shutdown circuit. The output current is muted when the chip temperature rises above 175_C (typically). (2) The IC is muted when the bias pin (pin 23) is low- ered below 1.4V (typically). Make sure it stays between 1 ...

Page 10

... Optical disc ICs FExternal dimensions (Units: mm) BA5931FP 287 ...

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