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.
SOP-8
FEATURES
*Internal mute function to prevent popping sounds when
*the
power is turned on and off.
*Built-in thermal shutdown circuit (150℃) to prevent
*damage
to the IC if a short circuit occurs.
*Pb-free plating product number: 3544L
APPLICATIONS
Devices that use the headphone output from CD-ROMs,
CDs, MDs, personal computers, notebook computers,
camcorders, etc.
ABSOLUTE MAXIMUM RATINGS
(Ta=25℃)
PARAMETER
SYMBOL
RATINGS
7.0
450 *
-25�½�+75
-55�½�+125
UNIT
V
mW
℃
℃
Applied voltage
Vmax
Power dissipation
P
D
Operating temperature
Topr
Storage temperature
Tstg
*Reduced by 4.5mW for each increase in Ta of 1℃ over 25℃
RECOMMENDED OPERATING CONDITIONS
(Ta=25℃)
PARAMETER
Power supply voltage
SYMBOL
Vcc
MIN.
2.8
TYP.
MAX.
6.5
UNIT
V
UTC
UNISONIC TECHNOLOGIES
CO. LTD
1
QW-R107-040,A