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NCS8353
Stereo 20 W/Ch Class D Audio Power Amplifier with Programmable Power Limit and Selectable Gain
NCS8353
Stereo 20W/Ch Class D
Audio Power Amplifier with
Programmable Power Limit
and Selectable Gain
The NCS8353 is a stereo Class D audio power amplifier capable of
delivering a continuous power of up to 20 W/ch into an 8 bridge tied
load (BTL). It can be powered from the existing 24 V rail in Flat Panel
Television (FPTV) systems. The high efficiency of the NCS8353,
86%, reduces the requirement of an external heat sink when driving
high power.
The digital power limit feature can program the output power limit
at 10 W, 12 W, 15 W, or 20 W/ch, allowing the NCS8353 to be a single
system solution in FPTV audio applications.
The NCS8353 includes a digital power limit feature. The digital
power limiter quickly reduces the internal gain of the amplifier when
high amplitude signals would cause excessive clipping on the output.
The NCS8353 minimizes pop and click artifacts in the audio system
by reducing voltage and current transients during power supply
cycling, entering or recovering from shutdown, and mute. The
shutdown feature reduces the quiescent current draw of the amplifier
to 100 A typical. The mute feature ensures that audio is not present at
the output during audio source switching.
The gain of the NCS8353 is programmed via two gain pins, G0 and
G1, allowing four selectable ranges: 20 dB, 26 dB, 32 dB, and 36 dB.
Auto recovery short circuit and over temperature protection
circuitry are incorporated to ensure device functionality after short
circuit and high temperature events occur.
Features Powered from 8 V to 26 V to include FPTV Backlight Supply (24 V
±5%) Digital Power Limiter Controlled by Two External bits: 10 W, 12 W,
15 W, or 20 W per Channel Allows for Maximum System Flexibility Reduces Distortion with Excessive Inputs Pop and Click Suppression Selectable Gain: 20 dB, 26 dB, 32 dB, 36 dB High Efficiency Eliminates the Need for External Heat
Sink Low Supply Current: IQ = 100 A Typical During
Shutdown at 12 V Mute Function Autoïrecovery ShortïCircuit Protection Over Temperature Protection Fully Differential Architecture This is a PbïFree Device
Typical Applications Flat Panel Television (FPTV) Powered Speakers
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Device Package Shipping
ORDERING INFORMATION
NCS8353MNTXG QFN32
(PbïFree)
2500 / Tape & Reel
For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
MARKING DIAGRAMS = Assembly Location = Wafer Lot = Year = Work Week = PbïFree Package
QFN32
MN SUFFIX
CASE 488AM1
NCS8353
AWLYYWW
(Note: Microdot may be in either location)
