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CXAR41300 is a smart audio power amplifier with built-in adaptive synchronous boost/AGC/temperature limit. When boosted to 7.5V by lithium battery, 6.5W power (5% THD + N) can be continuously output under 4Ω load condition; When boosted to 8.5V, 8.0W peak power (5% THD + N) can be output under 4Ω load condition. CXAR41300 built-in adaptive synchronous boost does not require external diodes, and can provide 5.5V, 6.5V, 7.5V, 8.5V four output voltage selection, to meet different output power requirements. In addition, the boost also has an adaptive function, small music signal does not boost, can greatly improve the system efficiency, extend battery life. Rich automatic gain control (AGC) features are built into the CXAR41300, including limiting (Limiter) and battery tracking (Battery Tracking). After the limiter function is turned on, even if the input signal is very large, the music output can be limited within the specified power and THD + N; After the battery tracking function is turned on, when the battery voltage is lower than the set value, the CXAR41300 can gradually reduce the gain as the battery voltage decreases to limit the battery current, which can greatly extend the battery life and prevent sound breaking and excessive current demand, reduce the risk of the battery entering the locked state early when the battery is low. The CXAR41300 also has an automatic temperature limit control (TFB) function. When the temperature in the chip is high under the conditions of high power output and high ambient temperature, the chip can automatically reduce the system gain to prevent the chip from entering the over-temperature shutdown protection mode. Under the premise of ensuring music quality, the peak power of music is significantly improved. The CXAR41300 can be freely switched in multiple modes to meet more system application requirements: Boost + Class D, Boost + Class AB, Class D alone, and Class AB alone. The CXAR41300 supports hardware control mode and I 2C control mode. In the I 2C control mode, a wealth of functions and parameter configurations are provided. In addition, the CXAR41300's internal integrated filter-free modulation technology can directly drive the speaker. The built-in shutdown function minimizes the standby current. It also integrates functions such as output over-current protection, on-chip over-temperature protection and power supply under-voltage abnormal protection.

   Product FeaturesReturn to TopTxC嘉泰姆

Automatic Gain Control (AGC) with Battery Tracking and LimitingTxC嘉泰姆

-Battery tracking (Battery Tracking) function: When the battery voltage is low, the system gain is automatically reduced to extend battery lifeTxC嘉泰姆
-Limiting (Limiter) function: freely select the audio limit amplitude, so that the output audio signal is limited to a fixed distortion levelTxC嘉泰姆

Built-in adaptive synchronous boostTxC嘉泰姆

-Small music signal is not boosted, which can greatly improve system efficiency and extend battery lifeTxC嘉泰姆
-No need for diodes in the peripheryTxC嘉泰姆

Built-in automatic temperature limit control functionTxC嘉泰姆

-Especially suitable for boosting 8.5V Class D, boosting Class AB state and high ambient temperature, significantly improving music peak powerTxC嘉泰姆

Quiescent current: 8.0mA, 3.6VTxC嘉泰姆
Effentivity: 85%(VBAT = 4.2V, RL = 4 + 22uH, Po = 0.6W)TxC嘉泰姆
· THD + N:0.02%(VBAT = 3.6V, RL = 4 Ω + 22uH, Po = 0.5W, Class D)TxC嘉泰姆
Flexible operation: supports hardware (CXAR41300) or I 2C control mode (CXAR41300C)TxC嘉泰姆
Power supply.TxC嘉泰姆

-Boost input VBAT:2.8V to 5.0VTxC嘉泰姆
-Boost output VPOUT multiple options: 5.5V, 6.5V, 7.5V, 8.5VTxC嘉泰姆

· Output powerTxC嘉泰姆

3.5 W(VBAT=4.2V, VPOUT=5.5V, RL=4Ω, THd+N=5%)TxC嘉泰姆
5.0 W(VBAT=4.2V, VPOUT=6.5V, RL=4Ω, THd+N=5%)TxC嘉泰姆
6.5 W(VBAT=4.2V, VPOUT=7.5V, RL=4Ω, THd+N=5%)TxC嘉泰姆
8.0 W (VBAT=4.2V, VPOUT=8.5V, RL=4Ω, THd+N=5%)TxC嘉泰姆
4.3 W (VBAT=4.2V, VPOUT= 8.5V, RL=8Ω, THd+N=5%)TxC嘉泰姆

Adjustable volume in CXAR41300C I2C control modeTxC嘉泰姆
・Multiple modes available: Boost Class D, Boost Class AB, Class D alone, Class AB aloneTxC嘉泰姆
・ Protection function: overcurrent/overheating/undervoltage abnormal protection functionTxC嘉泰姆
・Lead-free and halogen-free package, TSSOP28L-PPTxC嘉泰姆

   Scope of applicationReturn to TopTxC嘉泰姆

・ Bluetooth speaker/Wi-Fi speakerTxC嘉泰姆

The portable speaker.TxC嘉泰姆
2.1 channel small speakerTxC嘉泰姆
the loudspeaker.TxC嘉泰姆
· Iphone/ipod/ipod dockingTxC嘉泰姆
MP4, NavigatorTxC嘉泰姆
Tablets, LaptopsTxC嘉泰姆
The smart phone.TxC嘉泰姆
Small size LCD TV/monitorTxC嘉泰姆
Portable game machine.TxC嘉泰姆

   Technical Specification (Product PDF)Return to Top TxC嘉泰姆

If you need detailed PDF specifications, please scan WeChat and contact us. You can also get free samples and technical support.!TxC嘉泰姆
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   Product packaging diagramReturn to TopTxC嘉泰姆

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   Circuit schematicReturn to Top                         TxC嘉泰姆

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