DC-DC boost converter has current draw of just 0.1μA

20th November 2018
Mick Elliott

The MAX17250 DC-DC synchronous boost converter from Maxim Integrated is now in stock at Mouser Electronics. The MAX17250 offers up to 93% efficiency to minimise heat dissipation, with an ultra-low quiescent current that helps extend battery life in digital cameras, battery-powered Internet of Things (IoT) devices, and other connected designs.

The DC-DC boost converter includes a selectable input peak current limit of 3.5A, 2.7A, or 1.85A and operates over an input voltage range of 2.7V to 18V with an output voltage range of 3V to 18V.

The device supports switching frequencies up to 1MHz and offers short-circuit protection and a maximum on-time of 800ns in a space-saving 12-bump, 1.72mm × 1.49mm package.

The MAX17250 converter implements three modes of operation: The first mode of operation is a soft-start mode at power-up. The second mode of operation is normal operation, which uses a fixed on-time/minimum off-time pulse frequency modulation (PFM) architecture that uses only 60μA (typical) quiescent current due to the converter switching only when needed.

The device’s True Shutdown mode completely disconnects the output from the input, resulting in a current draw of just 0.1μA, virtually stopping battery drain, providing long battery life, and eliminating the need for external disconnect switches.

Mouser is also stocking the Maxim MAX17250EVKIT#WLP evaluation kit, a fully assembled and tested kit that incorporates the MAX17250 converter and provides resistor-configurable output voltages from 3V to 18V.

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