NCS8353: Audio Power Amplifier, Class D, Stereo, 20 W/Channel, 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 8Ω 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 reduces the requirement of an external heat sink when driving high power. The digital power limit feature can program the output power limit at 10W, 12W, 15W, or 20 W/ch, allowing the NCS8353 to be a single system solution in FPTV audio applications. The NCS8353 includes a hard limiter which works in conjunction with the digital power limit feature. The hard 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 µA 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 when short circuit and high temperature events are detected.

特性
  • Powered from 8.0 V to 26 V
  • Digital power limiter
  • Hard limiter
  • Programmable gain
  • Auto-recovery short circuit protection
  • High efficiency
优势
  • Includes FPTV backlight supply (24 V)
  • Allows programmable power limit to 10 W, 12 W, 15 W, 20 W.
  • Reduces distortion with excessive inputs
  • Allows system flexibility
  • Device protection against short circuits
  • Eliminates the need for an external heat sink
应用
  • Powered speakers
终端产品
  • LCD TVs
封装
数据表 (1)
Document TitleDocument ID/SizeRevisionRevision Date
Stereo 20 W/Ch Class D Audio Power Amplifier with Programmable Power Limit and Selectable GainNCS8353/D (373.0kB)3
封装图纸 (1)
Document TitleDocument ID/SizeRevision
QFN32, 5x5, 0.5P, 3.1x3.1EP488AM (57.4kB)A
评估板与开发工具
产品状况Compliance简短说明
NCS8353MNGEVBActivePb-freeStereo Audio Power Amplifier Evaluation Board
产品订购型号
产品状况Compliance封装MSL*容器预算价格 (1千个数量的单价)
NCS8353MNTXGActivePb-free Halide freeQFN-32488AM1Tape and Reel2500$1.7333
订购产品技术参数
ProductClassOutput Power Typ (W)VCC Max (V)Output Typeton Typ (ms)THD + N Typ (%)IQ Typ (mA)ISD Typ (nA)
NCS8353MNTXGD2026BTL4500.03330.1
Stereo 20 W/Ch Class D Audio Power Amplifier with Programmable Power Limit and Selectable Gain (373.0kB) NCS8353
QFN32, 5x5, 0.5P, 3.1x3.1EP NCN6804
NCS8353