The SM8150A is a charge pump type white LED driver, with 2-system programmable LDOs (Low Dropout Regulator), and step-down DC/DC converter power management IC. The white LED driver provides constantcurrent drive for 1 to 6 backlight white LED connected in parallel and 1 torch/strobe white LED. The charge pump automatically selects between x1 mode, x1.5 boost mode, and x2 boost mode in response to battery voltage, LED drive current, and VFLED (LED forward bias voltage drop) conditions in order to extend battery drive life. The SM8150A operating mode settings are accessed using an I2C*1 interface, allowing LED drive current, LDO voltage, output ON/OFF, and other settings to be controlled from a microcontroller. *1. I2C-BUS is a registered trademark of NXP B. V.