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Product category: Power Supply ICs and Controllers
News Release from: Maxim Integrated Products | Subject: MAX8640Y and MAX8640Z
Edited by the Electronicstalk Editorial Team on 11 January 2007

Step-down convertors shrink to SC70
packages

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The MAX8640Y and MAX8640Z are billed as the industry's smallest 500mA, high-efficiency step-down DC/DC convertors in tiny SC70 packages.

Maxim Integrated Products has released the MAX8640Y and MAX8640Z, the industry's smallest 500mA, high-efficiency step-down DC/DC convertors in tiny SC70 packages These devices are ideal for applications where small size, high efficiency, and low output ripple are priorities

They use a proprietary switching scheme to reduce external component size and draw only 24uA of quiescent current, thus providing excellent light-load efficiency.

This combination of small size and high efficiency makes them the industry's optimal solution for generating low-voltage microprocessor core supplies for cellphones, smartphones, digital cameras, and similar portable applications powered by a single-cell Li+ or three-cell NiMH/NiCd batteries.

Factory-preset output voltages from 0.8 to 2.5V eliminate external feedback-network components.

The high integration of the MAX8640Y and MAX8640Z enables the industry's smallest total solution size - 13.4mm2 compared with the conventional 35mm2 of SOT23 solutions.

These devices integrate a synchronous rectifier, which eliminates the need for an external diode and improves efficiency, especially at low output voltages.

The devices also feature low output ripple at all loads, ultrafast line- and load-transient response, and fast internal soft-start, which eliminates in rush current.

The MAX8640Y and MAX8640Z are available in 2 x 2.1mm SC70 and 1 x 1.5mm microDFN packages.

They are specified for the extended temperature range (-40 to +85C).

Prices start at US $1.58 (1000-up, FOB USA).

An evaluation kit is available to speed designs.

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