Power_electronics Features

NewSpace demands low voltage, high current power for performance and longevity - Nov 2022
Matt Renola, Senior Director, Global Business Development – Aerospace & Defense
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Power Electronics Europe News
Power management ICs are optimised for small Li-ion batteries

Battery life and efficiency in Bluetooth headphones, activity monitors, smart garments, smartwatches, and other size-constrained devices can be increased, say the company, using the power management integrated circuits (PMICs).

Most PMICs for small Li-Ion battery-operated hearing devices and wearables require additional components, such as boost, buck, and low dropout (LDO) regulators, a charger; and current regulators for LED indicators. These two PMICs save space, as these functions are integrated into a device that is only 19.2mm². This is less than half the size of existing component combinations, claims the company.

The MAX77650 and MAX77651 feature single inductor multiple output (SIMO) buck-boost regulators that provide three independently programmable power rails from a single inductor, 150mA LDO, and three current sink drivers to reduce overall component count and maximise available board space. For design flexibility, the MAX77650 operates up to 3.3V and the MAX77651 operates up to 5V. Both include an analogue multiplexer (MUX) output for safe battery monitoring, making them suitable for low power designs.

Standby power is 0.3µA with 5.6µA operating current.

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