DC/DC regulators for portable devices and more

Maxim Integrated Products has launched the MAX15050/MAX15051 low-voltage (2.9V to 5.5V) 4A synchronous DC/DC regulators for notebooks, single-cell portable devices and networking applications.

The step-down regulators are offered in a 2 x 2mm wafer-level package (WLP) and integrate Mosfets to simplify design, minimise EMI and save board space.

Operation from a fixed 1MHz switching frequency further reduces total solution size, allowing all-ceramic capacitor designs.

Offering peak efficiencies up to 96 per cent, the point-of-load converters minimise power losses in applications ranging from portable devices to networking equipment.

The MAX15050 employs a pulse-skip mode to improve light-load efficiency, making it suitable for applications such as notebooks and single-cell portable devices.

The MAX15051 operates with a forced PWM mode, allowing it to be used in telecom, networking and base-station applications.

Other features include an enable input and power-good indicator for power sequencing, adjustable soft-start for controlled turn-on, and the ability to safely start up into a pre-biased output.

The MAX15050/MAX15051 provide +/- 1 per cent output-voltage accuracy over load, line and temperature, and are fully specified over the -40C to +85C extended temperature range.

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