Summary
SC2319 is a stereo class D audio power amplifier with built-in BOOST boost module. The built-in BOOST boost module can be passed through
The external resistance regulates the boost value, even if it is supplied by lithium battery, when boost voltage is 6.5V, 10% THD + N, 4 load condition, can continuously output 2 *6W power. It supports external settings to adjust BOOST output
Voltage.
The biggest characteristic of SC2319 is the output control function of NCN, which can detect and suppress the output signal distortion caused by the excessive amplitude of input music and voice signal. It can also self-adaptively prevent the output crowning caused by the decrease of boost voltage in BOOST, significantly improve the sound quality, create a very comfortable audio enjoyment, and protect the loudspeaker from overload. Damage. At the same time, the chip has NCN-Off mode.
SC2319 integrates filter-free digital modulation technology, which can directly drive the loudspeaker and minimize the distortion and noise of the pulse output signal. The output does not need a filter network, and very few external components save system space and cost. It is an ideal choice for portable applications.
In addition, the built-in shutdown function of SC2319 minimizes standby current, and integrates the functions of output overcurrent protection, on-chip overtemperature protection and power supply under-voltage abnormal protection.
Characteristics
Anti-top-cutting distortion function
Excellent full bandwidth EMI suppression performance
Filter-free digital modulation, direct drive loudspeaker
Output power
2 *6W (VBAT = 3.7V, PVDD = 6.5V, RL = 4, THD + N = 10%)
Power supply
- Boost input VBAT: 2.5V to 5.5V
Boost output PVDD: VBAT to 6.5V BOOST output voltage adjustabl
Protection function
Overcurrent/overheat/undervoltage abnormal protection function
Lead-free package, TSSOP20L-PP
Application of nBluetooth speaker portable speaker
2.1-channel speaker amplifier
IPhone / iPod / iPod docking * MP4, navigator * tablet computer, laptop * smart phone * small LCD TV / monitor * portable game