A power supply capable of supplying 4A must be connected to J1 through a pair of 20-AWG wires. The LED load must be connected to J2 through a pair of 20-AWG wires. The positive terminal of the LED load should be connected to the TP2 or J2 terminal beside TP2, and the negative terminal of the LED load should be connected to TP4 or J2 terminal beside TP4. Wires should be twisted and kept as short as possible to minimize voltage drop, inductance, and EMI transmission.

TP10 and TP11 are the input terminals for control signals of different dimming modes. The configuration to one of the four dimming modes are shown in Table 4-2. For high signal, the DC voltage level should be higher than 1.2V, typically 3.3V. For PWM signal on PWM/EN pin or ADIM/HD pin, it should 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 should be in the range of 0.1kHz and 50kHz for PWM signal at PWM/EN pin. While for PWM signal on ADIM/HD pin, dimming frequency should be within 0.1kHz and 100kHz.