Marie-Therese Capron, director of low-voltage power management products at ON Semiconductor, said: "The NCP5680 combines ultra-thin prismatic supercapacitors to provide an excellent LED flash and power management solution for ultra-thin camera phones and digital cameras. This comprehensive LED flash The luminosity of the solution is comparable to Xenon flash, but the height is only half that of the latter, and no additional LEDs are required for shooting images. The NCP5680 enables lithium-ion batteries to allow more power-consuming functions to work longer. This new supercapacitor-based Power management solutions enable smart phones to deliver richer features."
ON Semiconductor's NCP5680 combines the latest slim prismatic supercapacitors, such as those supplied by CAP-XX and authorized by Murata (0.9 F for 5.5 V), and the high-power LED OSLUX NCP5680 and Lithium supplied by Osram The ionic batteries complement each other to provide a large peak current of 10 A for flash illumination and are optimized for use with the BriteFlashTM power architecture developed by CAP-XX. Fully programmable control of supercapacitor charging and discharging and unique overload protection ensures the right amount of luminosity for high quality photography. The NCP5680's integrated driver also powers other large peak current circuits in portable systems such as audio amplifiers, extending useful battery operating time.
A camera with a resolution of 5 megapixels or higher requires a high-brightness flash in order to take high-resolution photos in low light. Today's white LEDs can provide this level of light energy, but need to be nearly 400% more energy than the camera battery can provide. ON Semiconductor's NCP5680 is equipped with a battery that manages a supercapacitor to drive the LED flash to full brightness, providing a large peak current of up to 10 A. The integrated driver in the NCP5680 also manages supercapacitors to handle other peak power functions such as zoom, autofocus, audio, video, wireless transmission, global satellite positioning (GPS) data reading and radio frequency (RF) amplification to extend battery life Without giving up the slim design.
The NCP5680 integrates all the circuitry needed for supercapacitor charging, surge current management and LED current control, saving designers time, board space and component cost. Fully programmable control of supercapacitor charging and discharging ensures an appropriate amount of luminosity for high quality photography.
Flexible control with I2C interface
The I2C register in the NCP5680 allows the user to instantly adjust the output current and flash duration of each of the two LEDs. So this solution can provide different lighting effects, such as indicator lights, pre-flash, power flash for photography, and flashlight for photography. When the NCP5680 is connected to an ambient light sensor, the flash duration is automatically limited to prevent overexposure of the photo to ensure photo quality. In addition, the supercapacitor charging current can be adjusted by the I2C register. The NCP5680 can shut down charging during Global System for Mobile Communications (GSM) transmissions, limiting battery current consumption.
Security features
The NCP5680 also has several built-in protection mechanisms, including flash time out, temperature detection, overload protection, and short circuit protection. This component protects the flash circuit from any malfunction of the drive circuitry and LEDs.
Packaging and pricing
The NCP5680 is available in a 3.5 mm x 3.5 mm x 0.55 mm μQFN-24 package and is priced at $1.10 per unit in 3,000-unit quantities.
About ON Semiconductor
ON Semiconductor (Nasdaq: ONNN) has a global logistics network and a strong product line, which is the first choice for customers in the power, automotive, communications, computer, consumer, medical, industrial, mobile and military/aviation markets. A supplier of high performance, high performance silicon solutions. The company's broad product portfolio includes power supplies, analogs, digital signal processors (DSPs), mixed-signal, advanced logic, clock management, non-volatile memory and standard components. The company's global headquarters are located in Phoenix, Arizona, USA, and operate in key markets such as North America, Europe and Asia Pacific, including manufacturing, sales offices and design centers.
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