Power

PMICs architecture cuts external component count

3rd August 2017
Mick Elliott
0

The MAX77650 and MAX77651 power management ICs (PMICs) from Maxim Integrated are now being shipped by Mouser Electronics. These ultra-small, ultra-low-power PMICs integrate voltage regulators with a charger and current regulators to reduce external component count when designing small lithium-ion battery-operated products.

The PMICs offer a flexible and configurable power management solution in a compact total size of 28 × 28mm. They achieve this small size through a single-inductor, multiple-output (SIMO) buck-boost regulator that offers three independently programmable power rails.

For design flexibility, the MAX77650 operates up to 3.3V and the MAX77651 operates up to 5V.

Both products include an analogue multiplexer output for safe battery monitoring, making them ideal for low-power designs.

The devices offer a standby current of 0.3µA and an operating current of only 5.6µA when all three SIMO channels and the low dropout (LDO) regulator are enabled.

A wide array of programmable options makes them ideal for many battery-powered devices, such as Bluetooth-enabled headsets, fitness monitors, portable devices and Internet of Things (IoT) nodes.

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