IU8309 can be used for dual power supply applications with lithium battery and 12V adapter, suitable for 2.7V~12V power supply nodes, anti-breaking sound, AB/D switching power limit, built-in boost module, with adaptive boost function, constant 25W output power Class F mono audio power amplifier.
IU8309C is a Class R mono audio power amplifier suitable for 2.7V~12V power supply nodes, with four anti-breaking sound modes, AB/D switching, power limit, built-in BOOST boost module and the boost module has adaptive boost function. When powered by a single lithium battery, IU8309C can drive a load as low as 4Ω and output a maximum constant power of 19W; when powered by two lithium batteries in series, IU8309C can drive a load as low as 3Ω and output a maximum constant power of 25W. The design of class AB and class D switchable modes minimizes the interference of the power amplifier to FM in the audio subsystem. IU8309C breaks through the limitations of single and double lithium battery power supply, and provides terminal products with more extreme power output, making the power output of terminal products comparable to the output power of 12V lead-acid battery-powered audio systems.
The fully differential architecture and extremely high PSRR of IU8309C effectively improve the ability to suppress RF noise. The filter-free PWM modulation structure and built-in BOOST boost module and IU8309C's proprietary AERC (Adaptive Edge Rate Control) technology greatly reduce EMI interference within the full bandwidth of the audio. For a 60cm audio line, it has a margin of more than 20dB under the FCC standard. In addition, IU8309C has built-in overcurrent protection, short circuit protection and overheating protection, which effectively protects the chip from being damaged under abnormal working conditions.
IU8309C provides a small TSSOP20-PP package for customers to choose from. Its rated operating temperature range is -40℃ to 85℃.
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