A power supply capable of supplying 4 A must be connected to TP1 (VIN) and TP14 (GND) through a pair of 20-AWG wires. The LED load must be connected to TP4 & TP8 or J2 through a pair of 20-AWG wires. The positive terminal of the LED load should be connected to the TP4 or J2 terminal beside TP4, and the negative terminal of the LED load should be connected to the TP8 or J2 terminal beside TP8. Wires should be twisted and kept as short as possible to minimize voltage drop, inductance, and EMI transmission.

TP9 and TP12 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 1.2 V, typically 3.3 V. The dimming frequency should be in the range of 0.1 kHz and 50 kHz for PWM signal at PWM/EN pin. While for PWM signal on ADIM/HD pin, dimming frequency should be within 0.1 kHz and 100 kHz.