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Industry's Smallest Power-Management Solution for Portable Media Players
Note to Editor:
- The MAX8819A is a complete power-management IC that integrates a Li+ charger, Smart Power Selector™ circuitry, and four DC-DC regulators in a 4mm x 4mm TQFN package.
- This highly integrated, efficient device offers the most savings in not only BOM cost, but also in space: the complete solution footprint measures less than 90mm² with a low 1mm profile.
- Proprietary Smart Power Selector circuitry makes the best use of AC-to-DC adapter power or limited USB power, enabling a highly energy-efficient solution.
- The MAX8819A is ideal for use in portable media players, MP3 players, GPS devices, and other handheld devices in which a compact footprint and low solution cost are critical.
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SUNNYVALE, CA—October 15, 2008—Maxim Integrated Products (NASDAQ: MXIM) introduces the MAX8819A highly integrated power-management IC (PMIC). This device integrates a single-cell, lithium-ion (Li+)/lithium-polymer (Li-Poly) charger with proprietary Smart Power Selector circuitry that seamlessly distributes power within the system. To reduce BOM cost, the MAX8819A integrates three 2MHz step-down converters and one step-up converter with serial-step dimming control for powering two to six WLEDs. Offering a solution footprint of less than 90mm2 with a low 1mm height, the MAX8819A is the smallest complete power-management solution for battery-operated devices. This device is ideal for use in portable media players, MP3 players, GPS devices, and other handheld applications.
The MAX8819A's Smart Power Selector circuitry manages power distribution between a battery, USB/AC-to-DC adapter, and system load. When a USB or AC-to-DC adapter is connected, the input power that is not used by the system load is used to charge the battery. In addition, Smart Power Selector circuitry allows the system to operate with no battery or a deeply discharged battery. The Smart Power Selector also provides thermal-limiting circuitry that reduces the battery-charge rate to prevent the charger from overheating. All necessary power switches and current-sense circuitry are included on the chip—no external MOSFETs are required.
Integrating one 28V step-up and three fully synchronous, step-down switching regulators, the MAX8819A offers up to 95% efficiency for the full load range to maximize standby and runtime operation. The step-down regulator's high 2MHz switching frequency allows the use of small capacitors and inductors with a low 1mm profile.
The MAX8819A is available in a thermally enhanced, space-saving, 4mm x 4mm x 0.8mm, 28-pin TQFN package that is fully specified over the -40°C to +85°C extended temperature range. Prices start at $3.65 (1000-up, FOB USA). An evaluation kit is available to speed designs.
Maxim Integrated Products is a publicly traded company that designs, manufactures, and sells over $2 billion of high-performance semiconductor products annually. It was founded over 25 years ago with the mission to deliver innovative analog and mixed-signal engineering solutions that add value to its customers' products. To date, Maxim has developed over 5800 products serving the industrial, communications, consumer, and computing markets. For more information, go to www.maxim-ic.com.
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