“The load switch, literally, is a switch derived to control the on-off of the load. This kind of switch generally needs to pass a large current, and has the characteristics of fast switching response. In the past, load switches were generally built with discrete components, mainly using components such as MOSFETs and resistors for load on-off control. This makes the PCB area occupied relatively large, and it is difficult to miniaturize the product.

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The load switch, literally, is a switch derived to control the on-off of the load. This kind of switch generally needs to pass a large current, and has the characteristics of fast switching response. In the past, load switches were generally built with discrete components, mainly using components such as MOSFETs and resistors for load on-off control. This makes the PCB area occupied relatively large, and it is difficult to miniaturize the product. In response to the above problems and after in-depth market research, Toshiba has launched an integrated load switch based on the WCSP4G compact package, TCK127BG, through the continuous efforts of the R&D team. This IC can support hardware engineers to design high integration and low power consumption. , A new generation of products with stronger battery life.

Electrical Characteristics Analysis

The TCK127BG load switch supports operation in a wide voltage range from 1V to 5.5V and has an output current of up to 1A. It is very suitable for products with loads within 1A and requiring wide voltage operation;
Ultra-low power consumption: the quiescent current is only 0.08nA (VIN=VCT=5.5V, IOUT=0mA);

Low on-resistance:

RON=58mΩ (typ.), VIN=3.3V, IOUT=-0.5A
RON=106mΩ (typ.), VIN=1.8V, IOUT=-0.5A

The specific parameters are as follows:

Unless otherwise stated, @Ta=25℃

Functional characteristic analysis

The TCK127BG load switch has a built-in slew rate control driver, which reduces inrush current and improves EMI performance. At the same time, the TCK127BG load switch also has a built-in auto-discharge function, which ensures that disconnected or disabled loads are not floated.

The ultra-small package WCSP4G is a new package specially developed for the TCK127BG load switch, which is about 34% smaller than the TCK107AG, only 0.645mm×0.645mm, and can be easily installed on a small circuit board.

Application scenarios

Due to its superior data parameters and small package, the TCK127BG load switch can be used in consumer devices, mobile devices, IoT wearable devices, cameras, sensor power supplies, or general-purpose power supplies.

Toshiba has many years of research and development experience in power supply, especially in power supply, signal drive and control. Under the trend of miniaturization and intelligence of products in the future, Toshiba load switch products will also conform to the development of the times to promote the miniaturization of equipment. Contribute to reducing power consumption and provide valuable information for engineers who are or will plan to use load switches.