Components

National Semi Adds Energy Efficient Analog Technologies for Handheld Multimedia Devices

National Semiconductor Corp. announced seven new display, audio and power management products to enable energy-efficient video in handheld devices such as mobile phones, portable media players and new converged devices that feature phone and media playback functions. The new products convert digital data into real-world sights and sounds in the critical subsystems that enable video playback.

National’s low-power Mobile Pixel Link (MPL) family of products stream large quantities of data (seen by the user as images, video and graphics) to the display while maximizing battery life. MPL serializes the data to reduce the wire count, which decreases the size of the connector and flexible printed circuit board (flex). MPL reduces electro-magnetic interference (EMI), and its power consumption is claimed to be roughly half that of competing products. In addition, MPL handles the voltage-level translation between the host and the display, eliminating the need for an external level shifter.

Before video can be displayed, it must be decoded and processed by the application processor. Video processing consumes substantial energy, a major factor limiting battery life on mobile terminals. National’s PowerWise® technology enables intelligent energy management of the processor using adaptive voltage scaling (AVS). Using National’s PowerWise intellectual property integrated onto the processor along with compatible power management ICs such as the LP5552 is said to reduce energy consumption up to 70%, extending the life of the battery.

National’s LP5552 is a power management IC that supports AVS to enable the processor to adaptively adjust its supply voltage to the minimum level needed, greatly reducing its energy consumption. Offered in a 36-bump micro SMD package, the LP5552 includes two 800 mA buck regulators and five low-dropout regulators (LDOs).

For powering baseband functions, National offers the highly integrated LP3919 power management IC. Offered in a 49-bump micro SMD package, the LP3919 is claimed to be the smallest integrated power management IC on the market that features high-efficiency switching regulators, LDOs and a battery charger. The LP3919 powers the baseband processor as well as other support circuitry in the system.

Available now, the LP5552 is $4.50 and the LP3919 is $2.35 each in 1,000-unit quantities.

The demand to share video wirelessly is increasing, but sending data wirelessly consumes significant battery power. National’s new LM3207 dc-dc power supply, optimized for 3G RF power amplifiers, dynamically reduces energy consumption of the power amplifier by tightly regulating the RF power amplifier supply voltage to the lowest possible level while maintaining linearity in the power amplifier.

Available now in a 9-bump micro SMD package, the LM3207 is $2.50 each in 1,000-unit quantities.

National Semiconductor Corp.
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