The CM9321 is a high frequency, three-channel inductorbased PWM boost regulator specifically designed for constant current white LED and constant voltage OLED drive applications. With a maximum 19V/140mA output capability, the circuit can drive up to 10 WLEDs (5 series x 2 parallel) and one OLED, allowing up to 35 mA per channel. With an input voltage range from 2.7V to 6.0V, it can operate from a single cell Li-Ion battery.