TWS headphone power management chip technology speakers

TWS headphone power management chip technology speakers

The power management chip is mainly used for the charging and discharging of TWS headphones, as well as real-time battery overcharge, overdischarge, overcurrent and overtemperature monitoring and short-circuit protection during the charging and discharging process. Although the charge and discharge power of the power management chip is relatively small compared with traditional devices, the requirements for safety, low power consumption, high voltage resistance, high integration and high efficiency are relatively high for TWS headphones with high portability requirements.

The MAX77650/MAX77651 is a highly integrated, ultra-low power power management chip (PMIC) that is ideal for low-power, size-constrained wearable applications such as TWS where size and efficiency are critical. Both chips include a SIMO buck boost regulator that provides three independently programmable power rails.

In addition, the 150mA LDO provides ripple suppression for audio and noise sensitive applications. The highly configurable linear charger supports a variety of lithium battery capacities and includes battery temperature monitoring for increased safety (JEITA). The analog multiplexer in the MAX77650/MAX77651 switches multiple internal voltage and current signals to an external node for monitoring using an external ADC. The bidirectional I2C interface is used to configure and check the working status of the device.