Embedded System News .Com - March 2010 - Page# 17

Versa Clock Low Power Programmable

The VersaClock low power (LP) devices are programmable clock generators specifically designed to reduce power consumption and optimize board layout in battery-operated consumer applications including smart mobile handsets, personal navigation devices, MP3 players, camcorders, and other handheld applications. The new timing devices offer a significant reduction in power consumption to meet the increasing demand for power efficiency in consumer electronic devices. The VersaClock LP devices help extend the battery life for today’s portable electronics by reducing the power requirement from 30-40mW to 4-8mW for a single clock output. The VersaClock LP solutions also significantly reduce the power usage during power down (20uW) and sleep mode with 32kHz clock active (200uW). These are new low power benchmarks for the industry. The five new VersaClock LP devices (5P49EE801, 5P49EE802, 5P49EE601, 5P49EE602 and 5P49EE502) all feature four internal PLLs, each individually programmable and able to generate four unique frequencies, helping optimize the performance of each individual clock output and improving system accuracy. To give designers great flexibility, the frequencies are may be generated from a clock input, a single TCXO or fundamental mode crystal reference. Using a single reference clock allows designers to simplify design and save board space while still maintaining accuracy...
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CY8CLEDAC AC-DC Digital Power Controller

The CY8CLEDAC01 and CY8CLEDAC02 controllers offer a cost-effective solution for both non-dimmable and dimmable LED lighting, delivering high efficiency while meeting EnergyStar requirements. They provide automatic dimmer detection, so they work with the majority of the existing installed base of wall dimmers, providing dimming down to 2% with no flicker. The new AC-DC controllers offer primary-side sensing with tight LED current regulation, eliminating the need for opto-isolation and other secondary-side control circuitry. This technique minimizes component count to reduce board space, power consumption, and overall BOM costs compared to other isolated solutions. The new controllers also feature circuit protection not normally available with other primary-side control solutions. The new AC-DC controllers expand Cypress’ lighting portfolio to effectively cover LED retrofit bulbs. They complement the PowerPSoC; family of embedded power controllers, the industry’s first single-chip solution for both controlling and driving high-power LEDs. Together, the AC-DC family and Cypress’s PowerPSoC family cover a wide range of LED applications, from LED retrofit bulbs to high-end LED luminaires that require a variety of functions (communications, diagnostics, color-changing, etc)...
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78k0kx2-A

The new All Flash 78K0/Kx2-A MCU series offers robust peripherals combined with NEC Electronics' proven 78K0 MCU interface and safety features to support applications that require high-precision analog sensing capabilities. Target applications include industrial building automation sensors and monitoring devices, and consumer electronics devices with human interface systems such as game-control handsets.
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AP5100-High-Frequency-Buck-Converter

The AP5100 is High Frequency Buck Converter that designed to bring space savings and efficiency improvements to modem, set-top box, and distributed power applications. Packaged in the Compact 6-pin SOT26, this High Frequency and low cost converter features a built-in power MOSFET and internal compensation to limit external component requirements. The AP5100 operates at a fixes switching frequency at 1.4 Mhz. This Step down converter also enables a reduction in the overall size of external components, particularly the inductor. This converter capable to deliver a constant current output of up to 1.2A at 90% efficiency over a wide input supply range, from 4.75V to 24V. The output is adjustable via a resistor divider, from 0.81V to 15V. The current mode operation of this device provides for a fast transient response over the full operating input voltage and temperature range. The AP5100 has an enable pin allowing it to be put into standby mode where it consumes just 0.1µA. The AP5100 is self-protected, featuring on-chip thermal shutdown and cycle-by-cycle over-current protection to help ensure long-term product reliability...
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