Date: 03/09/2009

LED blinker with TinyWire interface for handheld apps from Fairchild semiconductor

Fairchild has introduced FAN5646, a new blinking LED solution where its internal programmable blink algorithm eliminates the need for a microprocessor to be in continuous operation mode. The FAN5646 continually play these LED blink patterns until commanded by the microprocessor to stop. Common approaches for solving this challenge include connecting the LED to an LDO regulator or a FET plus a lithium ion battery. Both of these implementations require a microprocessor to be programmed with a blinking pattern, draining battery life since the microprocessor needs to be continually operating to maintain this pattern. FAN5646 is suitable for portable handheld applications.

The key features and specifications for FAN5646 LED blinker includes:

TinyWire single-wire digital interface provides designer flexibility to program different blink rates and patterns.
Up to two different pulse widths and blink rates can be programmed.
Low drop-out voltage 80mV enables the LED to be powered without the need for inductors or switching capacitors, minimizing component count.
Small form factor: WL-CSP version occupies < 0.80mm2 of area.

The suggested applications include, Mobile phone, Pocket PCs, digital cameras, Bluetooth headsets, PMP and MP3 players

Package: 5-lead SC70 package
Price: Each $0.50 for 1k pieces
Availability: Now in samples

For more details visit www.fairchildsemi.com