1. Lithium battery management IC for mobile power supply.
At present, the domestic charging management system is mature, and the intelligent integrated IC controls the whole charging process, and the charging functions of lithium battery, constant current and constant voltage are performed. The model with stable performance is CT6551, CT6201, JW3816, JW6235, etc.
2. MCU of MCU.
MCU is an intelligent control system applied to PCB board, which can prevent the loss of power in the state of non-charging output, and prevent the device from being damaged by unstable current and voltage shock when charging. Can control the charging and discharging of product, provide charging protection, discharge protection, temperature protection, leakage protection, overload protection, short circuit protection, such as multiple protection, make more security and stability of product performance and longer service life of the product itself, but also avoid the instability of the output of mobile phone, solved the trouble back at home of users. Automatic identification of mobile phones and various digital products, supporting the charging of various brand smartphones and various tablet computers, and charging other digital electronic products that are compatible with USB 5V input. At present, the most common brands and models are juquan, juwei, songhan, haier HR6P61.
3. Mobile power patch boost IC.
The voltage of the mobile power battery is 3.7v, while the output voltage is 5.0v, and the power needs to go through the booster circuit to output. Because in the process of booster circuit the heat loss of power, the actual output power and output power battery has certain difference, the ratio of both called mobile power conversion rate. At present domestic technology conversion efficiency high and low range, average in 75-85%. There are some strength strong manufacturers, the scheme of the high cost of independent research and development design, the actual conversion rate can reach more than 90%, of course, with the development of technology, the conversion rate will be more and more high. Have 2 batteries in series into 8.4 V then take step-down way, efficiency can achieve 95%, but the high consistency requirements for batteries, security is lower, once the fault is easy to burn out the user's mobile phone and other digital products, so there are very few manufacturers use.