Outstanding battery life improvement: new ultra-low quiescent LDO regulator for portable devices

23 October 2018

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Introducing Microchip’s linear low dropout (LDO) regulator that brings a four-fold extension – when compared to traditional ultra-low quiescent LDOs – to battery life in portable devices.

With an ultra-low quiescent of 250 nanoamps, versus the approximate 1 uA operation of traditional devices, the MCP1811 LDO reduces quiescent current to save battery life – enabling end users to recharge or replace batteries less often.

The minimised power consumption enables portable electronic devices to run for months, or even years, on a single battery.

Ideal for IoT and battery-operated applications, such as wearables, remotes and hearing aids, the 250 nanoamps ultra-low quiescent reduces power consumption, by minimising standby or shutdown current.

The reduction of standby power consumption is of course critical in remote, battery-powered sensor nodes, where battery replacement is difficult and operating life requirements are high.

(Left) Microchip's low-dropout regulator: MCP1811 LDO

Available in package options as small as 1 x 1mm, the MCP1811 consumes minimal board space to meet the needs of today’s compact portable electronic designs. Depending on the application and number of LDOs, designers can take advantage of the extra board space with a larger battery to further increase battery life.

An additional benefit offered by the MCP1811 is faster load line and transient response when compared to other ultra-low quiescent LDOs. Faster response times can accelerate wake-up speed in devices (such as monitors or sensors) that require immediate attention.

Such an acceleration in transient response time can help designers to avoid undervoltage and overvoltage lockout measures used in sensitive applications, where transient spikes can result it catastrophic results.

The MCP1811 is now available for sampling and in-volume production. For more information, visit www.microchip.com/wwwproducts/en/MCP1811.

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