The AP1501A-12K5G-13 is a 4-channel Constant-Current-Controlled LED Driver made by Diodes Incorporated. It is rated at an output range of 0-12.5 kHz with a 12V input voltage, and 5 V output voltage. The maximum output current is 1,500 mA and it has a PWM dimming rate of 80 MHz. It is housed in a 8-pin SOIC package and is RoHS compliant.