3544 Datasheet, PDF (1/9 Pages) Unisonic Technologies – HEADPHONE AMPLIFIER FOR CD-ROMS

UTC 3544 LINEAR INTEGRATED CIRCUIT
HEADPHONE AMPLIFIER FOR
CD-ROMS
DESCRIPTION
The UTC 3544 is digital-source dual headphone amplifier.
The UTC 3544 has a fixed gain of 6dB so that external
gain setting is unnecessary. The UTC 3544 has internal
mute function so that prevention of the popping sound
when power is turned on and off is greatly simplified.
Also, The UTC 3544 is equipped with thermal shutdown
circuits to prevent damage from short circuits.
FEATURES
*Internal mute function to prevent popping sounds when
*the power is turned on and off.
*Built-in thermal shutdown circuit (150Â¥) to prevent
*damage to the IC if a short circuit occurs.
APPLICATIONS
Devices that use the headphone output from CD-ROMs,
CDs, MDs, personal computers, notebook computers,
camcorders, etc.
SOP-8
*Pb-free plating product number: 3544L
ABSOLUTE MAXIMUM RATINGS(Ta=25Â¥)
PARAMETER
SYMBOL
Applied voltage
Vmax
Power dissipation
P_D
Operating temperature
Topr
Storage temperature
Tstg
*Reduced by 4.5mW for each increase in Ta of 1Â¥ over 25Â¥
RATINGS
7.0
450 *
-25j+75
-55j+125
RECOMMENDED OPERATING CONDITIONS (Ta=25Â¥)
PARAMETER
SYMBOL MIN.
Power supply voltage
Vcc
2.8
TYP.
MAX.
6.5
UNIT
V
mW
Â¥
Â¥
UNIT
V
UTC UNISONIC TECHNOLOGIES CO. LTD ¹
QW-R107-040,A