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Temperature switch IC claims low 180nA power usage

Posted: 06 Jul 2011     Print Version  Bookmark and Share

Keywords:temperature switch  portable device  battery life 

Seiko Instruments Inc. introduces the S-5844 series temperature switch ICs offering low operating voltage of 1.65V and ultra-small package of 1 x 1mm. Seiko claims that the S-5844 ICs offer the lowest power consumption of 180nA targeted at smartphones, cellular phones, notebook PCs, tablet PCs and other battery operated portable devices designed for extended battery life.

S-5844 series

Seiko Instrument's S-5844 series of temperature switch ICs.

The S-5844 series has a wide temperature range 40°C to 125°C and allows for a wide range of applications. Temperature switch ICs are used to monitor temperature to keep devices functioning within a normal operating temperature range. The mobile/portable device market has been growing rapidly. The demand for additional functionality and higher processing speeds has increased heat generation. In addition to high density mounting and long battery life, these advanced devices require heat management to protect against malfunction.

The S-5844 series temperature switch ICs detect the specified temperature and protects the device from heat generation by inverting its output when the temperature threshold is reached. The output voltage is restored when the temperature drops to the specified release temperature. This enables the device to avoid temperatures above its design limits, improving safety and efficiency while reducing total design cost.

The series utilises a super-small HSNT-4(1010) package (1 x 1 x 0.4mm), enabling high density mounting. The SNT-4A package (1.2 x 1.6 x 0.5 mm) is also available.

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