BH3541F / BH3544F

Optical disc ICs

Headphone amplifier for CD-ROMs

BH3541F / BH3544F

The BH3541F and BH3544F are digital-source dual headphone amplifiers. The BH3541F has a fixed gain of 0dB and

the BH3544F has a fixed gain of 6dB so that external gain setting is unnecessary. Both the BH3541F and BH3544F have

internal mute functions so that prevention of the popping sound when power is turned on and off is greatly simplified.

Also, these ICs are equipped with thermal shutdown circuits to prevent damage from short circuits.

Product name

BH3541F

BH3544F

Fixed gain

0dB

6dB

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!Applications

Devices that use the headphone output from CD-ROMs, CDs, MDs, personal computers, notebook computers,

camcorders, etc.

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!Features

1) Internal mute function to prevent popping sounds when the power is turned on and off.

2) Built-in thermal shutdown circuit (150

°C) to prevent damage to the IC if a short circuit occurs.

3) Compact SOP8 pin package.

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!Absolute maximum ratings

(Ta = 25

°C)

Parameter

Symbol

Limits

Unit

Applied voltage

7.0

V

Power dissipation

Pd

450

mW

Operating temperature

Topr

−25 ~ +75

Storage temperature

Tstg

−55 ~ +125

°C

°C

∗

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!

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!Recommended operating conditions

(Ta = 25

°C)

Parameter

Power supply voltage

Symbol

Min.

Typ.

Max.

Unit

2.8

−

6.5

V