The IW3658-20F with LED Drivers SO-7 RoHS is a driver IC (integrated circuit) manufactured by Dialog Semiconductor that provides LED lighting management in cellular handsets, such as LCD backlight, indicator, and keypad lighting. It is a compact, low power, low noise driver that is RoHS-compliant, making it an ideal choice for mobile devices. It has adjustable reference voltage and current limiting, support for dimming modes (PWM and DC), and over-temperature protection. It also features power-source detection, enabling switching between two available power sources (USB, battery, etc) to maintain a constant current through the LEDs. The SO-7 package of the IW3658-20F enables minimal board space requirements.