BH6505K Rohm, BH6505K Datasheet

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BH6505K

Manufacturer Part Number
BH6505K
Description
PWM driver for CD and MD players
Manufacturer
Rohm
Datasheet

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Part Number:
BH6505K
Manufacturer:
FUJISOKU
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3 388
The BH6505K is a 4-channel PWM driver designed for CD and MD player motor and actuator drives. The power MOS-
FET output stage allows for applications with low power consumption. This IC also has a charge pump circuit and stan-
dard operational amplifier (needed for power MOSFET gate drives), and so supports a wide spectrum of applications.
FApplications
Portable CD players, MD players
FFeatures
1) Low power consumption.
2) A minimum of attached components.
3) Good gain precision because of the voltage feedback
4) Internal mute function for channels 1 and 2.
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions
PWM driver for CD and MD players
BH6505K
Optical disc ICs
circuit.
5) Allows for free-running and clock synchronization op-
6) Internal standard operational amplifier.
7) Internal charge pump circuit for gate drive.
eration.
241

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BH6505K Summary of contents

Page 1

... PWM driver for CD and MD players BH6505K The BH6505K is a 4-channel PWM driver designed for CD and MD player motor and actuator drives. The power MOS- FET output stage allows for applications with low power consumption. This IC also has a charge pump circuit and stan- dard operational amplifier (needed for power MOSFET gate drives), and so supports a wide spectrum of applications ...

Page 2

... Optical disc ICs FBlock diagram 242 BH6505K ...

Page 3

... Optical disc ICs FPin descriptions BH6505K 243 ...

Page 4

... Optical disc ICs FInput / output circuits 244 BH6505K ...

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... Optical disc ICs BH6505K 245 ...

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... Optical disc ICs 246 BH6505K ...

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... Optical disc ICs BH6505K 247 ...

Page 8

... Optical disc ICs FElectrical characteristics (unless otherwise noted 25_C, BATTERY = 2.4V, Pre 176.4kHz, R CLK 248 = 8 – BH6505K = 3.0V 1.5V ...

Page 9

... Optical disc ICs FMeasurement circuit BH6505K 249 ...

Page 10

... S As mentioned above, a capacitor and resistor are also CC required during clock synchronization Pre.V CC FOperation notes Attach a bypass capacitor (roughly the power supply, at the base of the IC. BH6505K CC ...

Page 11

... Optical disc ICs FApplication example BH6505K 251 ...

Page 12

... Optical disc ICs FElectrical characteristic curves FExternal dimensions (Units: mm) 252 BH6505K ...

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