Austriamicrosystems has announced the launch of the white LED flash driver AS3645. This inductive, ultra-small, high-efficiency single/dual LED flash driver can provide 25% higher output current than existing products. High flash power can improve the image quality and video quality of the product under the same system specifications, especially in low light conditions. The AS3645 inductive flash driver can drive up to 1,000mA and is suitable for single-LED flash or dual-LED flash environments. The high-side current source can work in an environment with two LEDs connected in series up to 2×500mA, and the voltage is as high as 720mA for one LED. When driving two LEDs in series, the LEDs can generate the same current and achieve output light matching and heat dissipation. AS3645 can automatically detect and decide whether to use single or dual LED mode, and can realize direct one-key flash mode. Its series of safety features can prevent circuit damage and improve test time, including programmable current limit, automatic test (LED open/short circuit detection), overvoltage and undervoltage, overheating, and automatic flash time for LED thermal protection during flashing Timer. These features are suitable for the needs of camera phone flashes, especially smart phones and multi-function phones. For other devices such as digital cameras, camcorders and handheld computers, the AS3645 flash driver is also a perfect solution. Its high-efficiency 2MHz fixed-frequency DC/DC boost converter with soft start requires only small inductors and can be easily integrated into noise-sensitive RF systems. The high-power LED flash current source has flash, torch and assist (video) light modes. The additional current source can drive an optional LED indicator. Control can be achieved through parallel interface mode to achieve simple integration, or through I2C interface mode to more comprehensively control all settings such as current and time. The interface can be selected through dedicated pins (I2C/EN). Price and availability AS3645 is now in mass production, with a price of less than US$0.90 per thousand pieces. 7Kw Ac Charging Pile,Vertical Dc Charging Pile,Charging Pile,Floor-Mounted Charging Stations Guangdong ChongWei Technology Ltd. , https://www.chongweitech.com
AS3645 adopts small WL-CSP (3×4 ball 0.5mm pitch, 2×1.6mm) package, and the operating temperature is -30℃ to 85℃ (ambient).