ST backlight driver simplifies circuit design
STMicroelectronics has extended its portfolio of energy efficient solutions for mobile devices with the addition of a new IC for lcd and keypad backlights comprising white leds.
The STLA02 is said to improve backlight design by performing high side current sensing, which allows the backlight negative (low side) terminal to be connected directly to ground with no need for a low side sensing connection. This, according to ST, simplifies pc board design, reduces wired connections to the backlight and increases system reliability.
The STLA02 can drive up to six leds and can operate from a supply voltage down to 2.5V, allowing its use in systems powered by only a single lithium cell. The maximum input voltage of 18V also enables it to be used with a variety of other battery types.
