The new device enables designers of mobile handsets, ultra-portable devices, consumer products and industrial/embedded systems to implement a blinking LED solution that can easily be programmed to create an enhanced visual experience.

With proprietary TinyWire single-wire digital interface, the FAN5646 can be programmed with a LED blink rate and pattern.

When the FAN5646 is enabled it will 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.

The FAN5646 lowers the overall solution cost while providing the features and benefits designers are requesting. Key features include:

Minimises System Power Consumption

• Internal programmable LED blink pattern allows the microprocessor to remain in sleep mode while FAN5646 is operating.

• Low power consumption during operation or in shutdown mode.

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.

Very Low Drop-out Voltage

• 80 mV drop-out enables the LED to be powered without the need for inductors or switching capacitors, minimising component count.

• Reduced component count results in lower inventory and procurement costs along with an easier PCB layout.

Small Form Factor

• Saves valuable board space in ultra-portable applications.

• WL-CSP version occupies < 0.80 mm2 of area.

• Small standard package: 5-lead SC70.

Availability and Pricing

Samples are available now with delivery: 12 weeks ARO. Price (each, 1,000 pcs.): US $0.50

Datasheet: FAN5646