Smart Watch Solution

Designing power circuitry for smart watches and other wearables can be a challenge due to the expectations of today's consumer: more functionality, longer battery life, and smaller size. Toshiba's discrete components increase available board space and reduce passive current consumption to ensure long battery life. Toshiba offers tiny MOSFETs, diodes, and transistors in addition to feature-rich ICs such as LDO regulators, load switches, and the intelligent eFuse IC.

Power Supply Circuit Solutions

Wireless or contact charging presents design challenges with control and protection from the outside world, whether it is a short circuit condition or EMI.

Toshiba load switches or eFuse ICs can provide precise control in addition to overvoltage and overcurrent protection. These ICs are supported by various FETs and diodes.

Beyond the PMIC, there are requirements for LDOs and switches designed for rails leading to sensitive sensors, chipsets, and other modules. Performance is maximized by implementing low I_Q load switches and LDOs which come in tiny wafer-level chip-scale packages.

Interface Circuit Solutions

Another consideration is the interface side of any design. This involves the subsystem which manages sensor outputs and controls displays or wireless modules.

Sensors are becoming increasingly smaller and, as such, require ultra-low offset voltage and low noise op amps to help bring the recorded signal to a readable level. Toshiba offers op amps to address both of these requirements.

In addition, Toshiba offers high speed and high current ESD protection diodes to help manage unwelcome static shock, a concern when designing wearables and other handheld devices. This is achieved with minimal insertion loss, allowing for speeds up to 10 Gbps.

Application Details Link:

https://toshiba.semicon-storage.com/us/semiconductor/application/smart-watch.html

Key Benefits

• Wide portfolio of products
• Reduces the need for board space with smaller packaging
• Increases battery life by minimizing quiescent current (IQ)
• Offers application notes and other material to help with design
• Aids in new protection standards (IEC-62368-1) with eFuse

Supporting Components

• Transistors and Bias Resistor Built-in Transistors
• Logic ICs