Wrist wearable devices such as smart watches and smart bracelets realize their functions through a variety of technologies such as software support and cloud interaction, and are widely used in entertainment, sports, medical and health and other fields. In recent years, with the increase in the income level of residents, people's demand for the portability, intelligence and functionality of electronic products has become higher and higher. Thanks to the rapid development of wireless communication, cloud computing and AI technologies represented by Bluetooth 5.0, smart wearable devices have entered a period of rapid development.
In the context of market demand and technical support, global wearable device shipments continue to grow. According to data disclosed by relevant market consulting institutions, the overall shipment of smart watches and smart bracelets in 2020 will be 193 million, an increase of about 24% year-on-year. Among them, the shipments of smart watches and smart bracelets will reach 115 million. Up to 78 million pieces. In the second quarter of 2021, the total global shipments of wearable wristband devices reached 40.9 million, a year-on-year increase of 5.6%. Shipment of basic watches and smart watches reached 25.4 million units, a year-on-year increase of 37.9%. It is estimated that by 2025, the overall shipment of smart watches and smart bracelets will grow to 388 million, and the market size is expected to grow to nearly 70 billion U.S. dollars.
One of the important reasons for the surge in shipments of wearable devices is that users continue to pay more attention to their own sports and health conditions. Especially since the outbreak of the epidemic, people have paid more attention to sports and fitness. With the cancellation of bans in some countries, this trend will intensify, people will pay more attention to outdoor sports, and interest in wearable devices will also increase.
While the various functions of smart watches and smart bracelets continue to be integrated, the trend of large-screen design and consumers’ higher requirements for battery life and performance stability all make such electronic products need to pay more attention to the system at the beginning of the design. Power consumption and circuit safety are two major issues.
In addition, the demand for portable devices requires strict control of size and size of such electronic devices. In order to maximize the use of space, the integrated functional chips need to be smaller.
In response to the above application requirements, load switches with ultra-low power consumption, ultra-small size, ultra-thin packaging, and function integration have become the first choice. It can protect the system circuit while cutting off the system load leakage current, such as over-temperature, under-voltage, over-current protection, reverse current protection and surge current suppression. Compared with the traditional separation device solution, the power load switch has become the best choice for engineers.
The IQSmart™ series of ultra-low power load switches independently developed by GLF cover different ranges of input voltage from 0.8V to 7V and output current from 1.5A to 7A. Functions and modules such as RCB and multi-channel can be configured independently, and they have high ESD in the industry. Static level.
GLF's IQSmart™ ultra-efficient, ultra-small load switch has a quiescent current as low as 1nA, and a shutdown current as low as 6nA. It also exhibits the lowest RDS(ON) in the same size, which has hundreds of times advantages over its peers. At the leading level in the industry.
The two Load Switch chip products GLF71301 and GLF72101, which are more suitable for smart watches and bracelets, feature parameters as follows:
· GLF71301 Characteristic parameters
Ultra-Low IQ : 1nA Typ @5.5V
Ultra-Low ISD : 19nA Typ @5.5V
RON Typ. : 34mΩ @5.5VIN
IOUT Max: 2A
· GLF72101 Characteristic parameters
Ultra-Low IQ: 0.45µA Typ @5.5VIN
Ultra-Low ISD: 20nA Typ @5.5VIN
Low RON : 37mΩ Typ @5.5VIN
IOUT Max: 2A
True Reverse Current Blocking
GLF currently has more than 40 load switch products of various types. In addition to the above-mentioned representative products, if you need a larger input current, you can choose the 2A GLF71311/71310; you can also choose the 4A GLF71321/71320. More product information can be found in the official account menu bar-product catalog.
Since its full entry into the smart watch and smart bracelet market in 2018, GLF has always served customers with high-quality products and stable and reliable supplies. In the field of smart watches and bracelets, it has accumulated more than 300 million shipments. In the future, GLF will continue to improve product performance, open up more application areas, and realize more scientific and technological value.
The following are GLF's main customers for smart watches and bracelets:
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