ROHM Semiconductor presents new small and high accuracy temperature sensor ICs

ROHM Semiconductor has introduced a new series of thermostat and analog temperature sensors integrating a temperature detection element, constant current circuit, comparator, and high-accuracy reference voltage source in a single chip.

Additional features include open drain output and active low operation along with +/- 4°C temperature detection accuracy that eliminates the need for complicated circuit designs. The temperature detection capability is enabled by simply connecting the IC to the set substrate, saving space.

Temperature control is becoming increasingly important for stable performance as electronic products become more minimized and operate at greater speeds. For instance, power supply and motor circuits that generate heat require temperature detection in order to prevent shorts or malfunctions and possibly damage.

ROHM offers two different line-ups:

1) The 5°C step BDEXXX0G series including 15 models in detection intervals of 10°C, from -20°C to +120°C, with 3-stage detection temperature switching possible.

2) The 2.5°C step BDFXXX0G series features eight models offered in detection intervals of 20℃ from -20℃ to +120℃, with 9-stage detection temperature switching possible.

Both line-ups provide greater compatibility and lower processing costs.

Features

Features of the new BDEXXX0G and BDFXXX0G families include:

• High temperature accuracy: +/- 4.0°C (e.g. BDE1200G, BDF1200G: 120°C detection at +/- 5°C)
• Open drain output
• 10°C (approx.) hysteresis temperature
• Highly accurate analog output: +/- 2.5°C (at Ta= 30°C)
• Analog output temperature sensitivity: -10.68mV/°C
• Low supply current: 16.0µA (typ.)
• Small package size: 2.90 x 2.80 x 1.25mm (typ.)
• Excellent ripple rejection characteristics

ROHM's temperature sensor ICs are suitable for a wide range of applications and for electrical equipment requiring temperature protection, such as cell phones, PCs, LCD TVs, industrial devices, game machines, car navigation systems, and the like.

The new temperature sensor ICs are available now.

For more information, or details on these items or the full range of ROHM products available from Anglia please call +44 (0)1945 474747 or email info@anglia.com

Alternatively, click on this link to go to the main Rohm section where you can view other news articles and product data.

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This news article was originally published in May 2009.