A power supply capable of supplying 6A must be connected to TP5 (VIN) and TP3 (GND) through a pair of 20-AWG wires. The LED load must be connected to TP4 and TP6 or J1 through a pair of 20-AWG wires. Connect the positive terminal of the LED load to the TP4 or J1 terminal beside TP4, and connect the negative terminal of the LED load to TP6 or J1 terminal beside TP6. Twist the wires and keep the wire length as short as possible to minimize voltage drop, inductance, and EMI transmission.

TP8 and TP9 are the input terminals for control signals of different dimming modes. The configuration to one of the four dimming modes are shown in Table 2-2. For high signal, the DC voltage level needs to be higher than 1.2V (typically 3.3V). The PWM signal on EN/PWM pin or ADIM/HD pin needs to be a square wave with a low level of GND and a high-level voltage higher than 1.2V (typically 3.3V). The dimming frequency needs to be in the range of 0.1kHz and 50kHz for PWM signal at PWM/EN pin. For the PWM signal on the ADIM/HD pin, the dimming frequency needs to be within 0.1kHz and 100kHz.