AnalogicTech designed for functional phones, a new white LED driver

AnalogicTech company (feature phone) for functional mobile phone market, launched a new set of flash and white LED driver AAT3176 flash drives, AAT3351 drives and high efficiency LED, mobile phone designers can help extend battery life and reduce product pin position.

AAT3176 flash driver IC that can operate in the 2.7V to 5.5V input voltage, and can provide up to 500mA output current. Dual mode charge pumps can achieve maximum power efficiency by supporting 1X and 2X operations, and can be programmed in 16 unique steps through the AnalogicTech patented S2Cwire (simple serial control) interface. The minimum packaging industry - 500mA flash drive IC at small 20%AAT3176 element allows designers to establish a small camera lighting solutions.

For maximum design flexibility, and the programming time reduced to a minimum, AAT3176 using an external resistor to set the maximum individual Flash movie mode and current. To protect the integrity of the device, the driver has a thermal management system and an automatic soft start circuit including open circuit and short circuit protection. The load off characteristics can be used to extend the battery life by disconnecting the load during shutdown, and reducing the quiescent current to less than 1 A.

AAT3351 is a high efficiency charge pump, with each 30mA 4 white LED driver. The dual mode fractional charge pump can automatically switch between the 1X and 1.5X mode according to the input voltage, the LED forward voltage and the load current to achieve the highest efficiency. 1MHz switching frequency can help minimize the size of external components.

In brightness level between the smooth switching element, AnalogicTech using the S2Cwire serial digital interface, that can disable, and the current is set to 32 level one. LED current output accuracy of +10%, LED current matching is 3%. AAT3351 also added automatic soft start circuit and built in short circuit protection.