Constant current drive touch dimming control board; use the China Resources Silicon Granville PT4115 solution, with high dimming ratio, wide voltage input, high peak efficiency, over-temperature soft protection, LED natural open circuit protection and other functions; and high-performance capacitive single-key Touch, without direct contact sensing, can be used on the surface of glass, ceramics, plastics and other media, PWM mode dimming frequency up to 32KHz, basically no flicker and noise, with automatic adaptation to changes in the working environment, and supports several different working modes: Stepless dimming, three-speed dimming, direct output, latched output, etc. The board is equipped with RC filtering and LDO voltage stabilization to provide stable and reliable working power for the system. Mainly used in the control panel of LED lamps such as desk lamps, floor lamps, and atmosphere lamps.
[Product parameters]
Dimensions: length 40mm × width 20mm × height 8mm
Input voltage: constant voltage DC power supply 12V
(9V～24V universal, for step-down constant current, input should be higher than output, reserve 2～5V margin, constant current effect is best)
Output voltage: voltage across the lamp
Output current: about 475MA all bright 0.2 ohm
Static current consumption: ≈9 mA or less (including indicator light working current);
Dimming method: PWM
Dimming frequency: 20KHZ
Duty cycle: stepless 2%-100%
Induction thickness:
5MM--use a 2CM diameter round copper foil separated by a 5MM thick acrylic board as the test standard (sensitivity is adjustable); capacitive single-key sensing, no direct contact sensing is required, generally no special special control panel is required, and ceramics can be basically separated , Glass, microcrystalline board, plastic, plexiglass and other materials for installation or modification.
Touch method:
Metal or some conductive materials can be sensed by the human body; similar to the capacitive touch screen of a mobile phone. From the touch point, solder a lead wire. After the wire is pulled out, it can be connected to the PCB copper foil, metal sheet, flat-top cylindrical spring, conductive rubber, conductive ink, conductive glass ITO layer, etc. as a touch sensing area. Generally, round copper foil with a diameter of about 20mm is commonly used. It is recommended to control the lead wire length to about 10CM, choose a thinner lead, and solder it reliably; both the lead and the touch sensing area can be sensed, so metal or some conductive materials including the surface of the battery should be avoided in actual applications to avoid malfunction Or affect sensitivity
PS:
1. The contact area between the touch button and the panel. The larger the area and the closer the contact, the better the touch effect, and vice versa.
2. The material and thickness of the touch panel. The thinner the panel, the better the touch effect, and vice versa. The touch effect of the panel made of glass, microcrystalline board and other materials is better than that of the panel made of plastic, plexiglass and other materials.
[Wiring]
PCB board mark: DC IN, +,-are DC power input terminals;
PCB board mark: LED+, LED- are the output terminals connected to the positive and negative poles of the LED light board;
[Way of working](Brightness memory refers to the condition of not losing power; gradual brightness and dimming refers to the process of turning on and off the light)
1. Without brightness memory, the sudden and dark LED touch stepless dimming function
2. Without brightness memory, LED touch stepless dimming function that fades in and out
3. LED touch stepless dimming function with brightness memory gradually brightening and dimming
4. LED three-segment touch dimming function
