BA5952AFP Rohm, BA5952AFP Datasheet

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BA5952AFP

Manufacturer Part Number
BA5952AFP
Description
Manufacturer
Rohm
Datasheet

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The BA5952AFP is a four-channel BTL driver IC for driving the motors and actuators in products such as CD ROM drives.
Two of the channels use current feedback to minimize the current phase shift caused by the influence of load inductance.
FApplications
CD-ROM drives, DVD drives, DVD ROM drives.
FFeatures
1) Two channels are current-drive-type BTL drivers for
2) Wide dynamic range (4.0V (typ.) when PreV
3) Level shift circuit on chip.
4) Thermal shutdown circuit on chip.
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions (Ta = 25_C)
542
4-channel BTL driver for CD-ROM
drives
BA5952AFP
Optical disc ICs
two-shaft actuators. One channel is a voltage-drive-
type BTL driver for transport motors, and the last is
a current-drive-type BTL driver for loading motors.
PV
CC
= 5V, and R
L
= 8 ).
CC
= 12V,
*
*
*
Dual-shaft actuator drivers
These drivers use current feedback to minimize the
current phase shift cause by the influence of load in-
ductance. Output structure is power op-amp to mini-
mize back-rush noise.
Transport motor driver
Differential input and signal addition is possible by
connecting general-purpose op-amps to the inputs.
Loading driver
Performs forward and reverse drive with transistor
logic input. Can also be used as a linear BTL driver.

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BA5952AFP Summary of contents

Page 1

... BTL driver for CD-ROM drives BA5952AFP The BA5952AFP is a four-channel BTL driver IC for driving the motors and actuators in products such as CD ROM drives. Two of the channels use current feedback to minimize the current phase shift caused by the influence of load inductance. FApplications CD-ROM drives, DVD drives, DVD ROM drives ...

Page 2

... Optical disc ICs FBlock diagram FPin descriptions BA5952AFP 543 ...

Page 3

... Optical disc ICs FInput/output circuits 544 BA5952AFP ...

Page 4

... Optical disc ICs FElectrical characteristics (unless otherwise noted 25_C, PreV FElectrical characteristics (BIAS = 2.5V 12V 0 100pF) L BA5952AFP 5V 545 ...

Page 5

... Optical disc ICs FMeasurement circuit 546 BA5952AFP ...

Page 6

... Optical disc ICs FApplication example BA5952AFP 547 ...

Page 7

... FElectrical characteristics curves 548 (5) Connect a bypass capacitor between the bases of the power supply pins of this IC. Supplement Current-feedback driver The transmission gain (output current/input voltage) is given by WIRE R is the total gold wire resistance inside the package WIRE (0.15 0.05 ) (typ.). BA5952AFP ...

Page 8

... Optical disc ICs FExternal dimensions (Units: mm) BA5952AFP 549 ...

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