The PCA963x family of LED drivers come with 4, 8 or 16 output channels. The PCA9632 is the low-power version of the PCA9633. The devices are fully programmable with 8-bit individual PWM which can be set to dim each output in 256 steps. There is also an 8-bit global PWM which can be set to control the dimming on all the outputs. Unlike the PCA962x family of devices which can drive up to 100 mA at 40 V, the PCA963x devices can only drive up to 25mA per output with a maximum pulled-up voltage of 5 V.