参数资料
| 型号： | NCS8353MNTXG |
| 厂商： | ON Semiconductor |
| 文件页数： | 1/14页 |
| 文件大小： | 0K |
| 描述： | 20W CLASS D AUDIO AMP 32QFN |
| 标准包装： | 2,500 |
| 类型： | D 类 |
| 输出类型： | 2 通道（立体声） |
| 在某负载时最大输出功率 x 通道数量： | 20W x 2 @ 8 欧姆 |
| 电源电压： | 8 V ~ 26 V |
| 特点： | 消除爆音，差分输入，静音，短路和热保护，关机 |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | 32-QFN（5x5） |
| 封装/外壳： | 32-VFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
Semiconductor Components Industries, LLC, 2011
March, 2011 Rev. 3
1
Publication Order Number:
NCS8353/D
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
W 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
mA 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 mA Typical During
Shutdown at 12 V
Mute Function
Autorecovery ShortCircuit Protection
Over Temperature Protection
Fully Differential Architecture
This is a PbFree Device
Typical Applications
Flat Panel Television (FPTV)
Powered Speakers
http://onsemi.com
Device
Package
Shipping
ORDERING INFORMATION
NCS8353MNTXG
QFN32
(PbFree)
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
A
= Assembly Location
WL
= Wafer Lot
YY
= Year
WW
= Work Week
G
= PbFree Package
QFN32
MN SUFFIX
CASE 488AM
32
1
NCS8353
AWLYYWWG
G
1
(Note: Microdot may be in either location)
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