Micrel launches 7 WATT boost LED driver for portable devices

Simulation, high bandwidth communication and Ethernet integrated circuit solutions company Micrel Inc (MicrEL Inc.) recently announced that the launch of the industry's smallest and most powerful portable devices for light emitting diode (LED) driver MIC2298. This device is a 7 Watt High Efficiency Boost DC to DC converter in a small, 3 mm x 3 mm MLF package. MIC2298 for mobile phones, personal digital assistants (PDA), as well as digital cameras in the flashlight and flashlight lighting applications, currently available in bulk, the price per piece of 1000 starts at $1.65.

The MIC2298 ensures a 3.5 safe conversion current, allowing the device to provide a current of up to 1 in a series of high brightness white light emitting diodes (WLED) connected in series (two). This gives rise to a bright flash to improve the quality of the photos, especially for the 2 million or more pixels. The brightness of the light emitting diode can be controlled dynamically by applying voltage or pulse width modulation (PWM) signal to the brightness setting pin.

The integrated circuit works at a fixed switching frequency of 1MHz, and the efficiency is above 86%. The MIC2298 solution requires only a small 2.2uH sensor and a small ceramic capacitor to minimize the volume and minimize the cost of the solution. In addition, this solution works in the range of 2.5 volts to 10 volts, with a single core and dual core lithium battery working range.

Source: International Electronic Business