The SLM833X series products independently developed and produced by Suming Semiconductor were exhibited at the 21st Optical Expo. This exhibition showcases three products: SLM8333, SLM8334, and SLM8335, with packaging formats covering QFN and CSP. This series of products integrates linear power stage, pulse width modulation (PWM) power stage, and two zero temperature drift, rail to rail operational amplifiers. The chip adopts an efficient single inductor architecture, achieving more compact, higher conversion efficiency, and lower noise; The power stage integrates ultra-low impedance MOSFETs, which have lower losses and longer lifespan. The SLM883X series products integrate TEC voltage and current monitoring, heating and cooling current limiting and voltage limiting functions, achieving more comprehensive protection. This series of products supports digital PID and analog PID control or is compatible with two control modes. The maximum cooling and heating currents are 1.5A and 3A, respectively. Customers can choose the appropriate product according to their application.

Little knowledge:

Thermo Electric Cooler (TEC) is made by utilizing the Peltier effect of semiconductor materials. When direct current passes through a couple composed of two semiconductor materials, one end absorbs heat and the other releases heat. When there is current flowing through the TEC, the heat generated by the current will be transferred from one side of the TEC to the other, creating the "hot" and "cold" sides on the TEC, which is the heating and cooling principle of TEC. Due to the wavelength of the laser emitted by the laser being very sensitive to temperature, the requirements for temperature accuracy and stability are very high. Therefore, TEC is widely used in the optical module industry. Usually, both TEC and laser are packaged using TO.

TEC operates in a cooling or heating state, and the rate of cooling and heating is determined by the direction and magnitude of the current passing through it. In order to achieve good temperature control accuracy and stability, a high-performance TEC control chip is needed. This chip can not only provide a reliable, controllable and efficient power supply for TEC, but also protect TEC materials.

Regarding the Light Expo:

The China International Optoelectronics Expo (CIIE) was founded in 1999 and is held in Shenzhen every September. It is the largest optoelectronic professional exhibition in the world and a member of the International Exhibition Alliance (UFI). The Optics Expo is a comprehensive exhibition of the optoelectronic industry with great scale and influence, covering the optoelectronic industry chain sectors such as optical communication, laser, infrared, precision optics, optoelectronic innovation, military civilian integration, optoelectronic sensing, data centers, etc. As a professional exhibition covering the entire optoelectronic industry chain, CIOE China Optics Expo has become the preferred platform for many enterprises to expand their markets and promote their brands. It also provides a one-stop professional platform for industry insiders to search for new technologies and products, understand market opportunities, and conduct business, technical, and academic exchanges.