The CM9130 is an adaptive fractional switched capacitor (charge pump) regulator optimized for driving 3 white LEDs. Each LED's driver current is matched to within 2% for uniform intensity. It supports an input voltage range of 2.9V to 6V, with undervoltage lockout. A failure detection circuit prevents the loss of power when one or more LEDs fail (short or open). Internal overtemperature and over-current management provide short circuit protection.