Supercapacitor LED flash/torch controller IC overcomes LED camera flash limitations
January 31, 2012 // Paul Buckley
A supercapacitor LED flash/torch controller IC from STMicroelectronics claims to overcome the limitations of compact digital cameras and cameraphones to satisfy demands for increased power from the built-in flash unit while supporting more sophisticated user controls.
The STCF04, is an integrated camera flash and torch controller that raises the maximum power of an LED flash module from a few Watts, typical of today's designs, to over 40 Watts, producing the brightness equivalent to an outdoor security floodlight. The device also provides extra flash and torch brightness controls, with eight user-selectable levels for the flash and 12 for the torch, as well as a light-sensor input. Flash and torch safety timers, temperature sensing and short-circuit protection features are also built in.
The STCF04 is used in a configuration combining a supercapacitor, a discrete high-current MOSFET switch and high-power white LEDs, and is ideal for use in emergency high-intensity flashing lights as well as camera and cameraphone applications.
The discrete MOSFET is the key to the STCF04's power advantage over other controllers that usually integrate a MOSFET of lower rating on the chip. Its extra power enables designers to provide the higher quantities of light energy required by today's high-Mpixel camera sensors by specifying an LED flash unit rather than a conventional high-power xenon flash, thereby gaining the advantage of a compact and simplified design.
Since ST began sampling the STCF04, two major partners – Murata which is leading producer of supercapacitors (MURATA) and OSRAM which is a top-tier supplier of flash modules for leading smartphone platforms have begun using the device to showcase the best capabilities of their latest products.
For further information: www.st.comAll news
Low noise rail-to-rail negative regulator with programmable current limit
August 28, 2014
The LTR3090 is a low noise single resistor programmable negative regulator based upon current reference architecture.
Study: Connected Car to spur competition between OEMs and IT players
BAE Systems develops 'smart skin' for aircraft
White-chip scale packages cut costs by 80 percent
Emberlight connects ordinary light bulbs to your smartphone
Cree targets mid-power LEDs with USD83m Lextar investment
August 27, 2014
Cree, Inc. has entered into an agreement with Lextar Electronics Corp., a vertically-integrated LED company from Taiwan, ...
Will 2D semiconductors threaten graphene's PV dominance?
IKEA GreenTech invests in energy-efficient LED technology developer
Searching through big data with the NSA
- How to Protect & Monetize Android Apps
- Building Blocks for the Internet of Things
- New Linear Regulators Solve Old Problems
- Testing GPS with a Simulator
InterviewCEO interview: Tronics' Langlois makes moves in MEMS
Pascal Langlois has been CEO at Tronics for nine months. He discusses plans for the company and directions for the complex and diverse MEMS technology sector.
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Altium Ltd is offering EETimes Europe's readers the chance to win one TASKING VX-Toolset for ARM Cortex-M Premium Edition, normally licensed for 2.395 Euros, for ultra-rapid prototyping and code development around ARM Cortex-M based microcontrollers.
The VX-toolset for ARM is the first TASKING compiler suite to receive the Software Platform technology, which is seamlessly...Read more
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.