By Maxim Integrated 265
Maxim Integrated's MAX77650AEWV+ and MAX77651AEWV+ are a highly integrated battery charging and power supply solutions. These chips were designed for low power, wearable applications in which size and efficiency are important. Both devices feature a single inductor, multiple output (SIMO) buck-boost regulator that provides three independently programmable power rails from one single inductor. This allows users to minimize the total solution size.
A 150 mA LDO provides ripple rejection for noise sensitive applications including audio. The ICs include battery temperature monitoring, current sinks for driving LED indicators, and an analog multiplexer that switches several internal voltage and current signals to an external node for monitoring with an external ADC. The bidirectional I2C interface allows users to configure and check the status of the device.
SIMO Switching Regulators Extending Battery Life for Hearables and Wearables
DS26 Hearables Get Longer Life with SIMO