Dynamic dual flash driver for smartphones

February 26, 2014 // By Jean-Pierre Joosting
A dual flash driver for smartphones, the SKY81296, incorporates Skyworks’ proprietary TrueFlash™ capability to enable sophisticated LED flash management and to capture the best image possible. It also offers new user features such as message notification and privacy indicator.

With its unique dynamic flash control and battery voltage monitoring, the driver operates at lower power while maintaining flash capability, ensuring the camera does not power down during critical moments. TrueFlash™ also provides the highest intensity flash for the best illumination across all conditions, offers the best system reliability and the most flexibility when independently controlling two drivers.

According to a study by Assocham entitled “The Digital Camera versus Smartphones”, the demand for digital cameras is declining rapidly as the popularity of smartphones has soared. “Smartphones are becoming the main camera of choice by a large number of people and increasingly more consumers are relying on their smartphones instead of compact digital cameras for both still photos and video capture,” stated the study. The report reveals that 92 percent of customers now prefer high-end smartphones over digital cameras. The report also noted that smartphones need fewer steps to share the images with others, thanks to built-in Internet access and applications designed to interface with social media and photo sharing sites.

According to Gartner, Inc., mobile phones with cameras will grow from approximately 1.6 billion units in calendar year 2011 to over 2.2 billion units in calendar year 2015, representing over 90 percent of mobile phones worldwide. An additional 15 percent of smartphones will have two cameras to take portrait photos or to enable video chat.

The SKY81296 with TrueFlash™ is a high efficiency, 2.4 A / 2 A high-current boost converter with two independently programmable constant current outputs. By offering completely independent control of the two LEDs, the driver enables camera system engineers to implement sophisticated flash management algorithms that enhance image quality. The device is intended for LED photo flash applications in all Li-ion powered portable products.

www.skyworksinc.com