CS8389/CS8390 built-in boost 2X4.8W, 2X6.6W, anti-breaking sound, AB/D class switching two-channel audio power amplifier IC series

With the rapid improvement of the function and performance of Bluetooth speakers, consumers’ requirements for power are getting higher and higher. In outdoor application scenarios, the single-cell lithium battery direct supply solution has become more and more difficult to meet the market’s demand for higher power. . For speaker designers, an audio power amplifier with built-in boost is a better choice. The built-in boost module of the power amplifier chip provides a higher power supply voltage, thereby increasing the output power of the power amplifier.

With the rapid improvement of the function and performance of Bluetooth speakers, consumers’ requirements for power are getting higher and higher. In outdoor application scenarios, the single-cell lithium battery direct supply solution has become more and more difficult to meet the market’s demand for higher power. . For speaker designers, an audio power amplifier with built-in boost is a better choice. The built-in boost module of the power amplifier chip provides a higher power supply voltage, thereby increasing the output power of the power amplifier.

Shenzhen Yongfukang Technology Co., Ltd. is now pushing the built-in boost two-channel audio power amplifier IC series-CS8389/8390 product series specially designed for single-cell lithium battery power supply, breaking through the limitations of single-cell lithium battery power supply, providing The terminal product provides more extreme power output, and the built-in AB/D switch perfectly solves the interference of FM radio. CS8389E/CS8390E are pin-compatible, and the peripheral application circuit does not need to be changed, and the power covers 3W, 4W, and 5W dual-channel applications.

summary

CS8389E/CS8390E is a class R audio power amplifier with built-in BOOST boost module with anti-sound function. Boosting CS8389E BOOST to 6.2V can provide 2X4.8W constant power for 4Ω load. CS8390E BOOST boosting to 7.3V can provide 2X6.6W constant power for 4Ω load. CS8389E/CS8390E are fully pin-compatible and are used for audio The power amplifier design of the subsystem and the upgrade and replacement of end products provide considerable power margin and maximum convenience. Within the power supply range of a single-cell lithium battery, the CS8389E/CS8390E is the best choice for portable speaker equipment.

The CS8389E/CS8390E’s fully differential architecture and extremely high PSRR effectively improve the CS8389E/CS8390E’s ability to suppress RF noise. The PWM modulation structure without filter and the built-in BOOST boosting module reduce peripheral devices as much as possible. In addition, CS8389E/CS8390E have built-in overcurrent protection and overheating protection, which can effectively protect the chip from being damaged under abnormal working conditions.

The CS8389E/CS8390E is available in a tiny ESOP16L package for customers to choose from, and its rated operating temperature range is -40°C to 85°C.

describe

Built-in BOOST module R-type structure, integrated D-type AB-type two modes
Output power CS8389E: PO at 10% THD+N, VIN = 3.7V RL = 4 Ω 2X4.8W
CS8390E: PO at 10% THD+N, VIN = 3.7V RL = 4 Ω 2X6.6W
Excellent “pop-noise” suppression
Operating voltage range: 2.7V to 5.5V
Built-in 20x fixed gain
4 anti-breaking sound modes are available
Class-D structure without filtering
RL=4Ω[email protected]