Microchip Technology introduced the RE46C190 3V photo smoke-detector IC with horn driver and boost regulator. The RE46C190 features low-voltage operation with programmable calibration and operating modes. With the smoke-detector IC, the desired operating modes can be selected and calibrated during manufacturing. A single Lithium battery can power the chip for up to ten years. Two Alkaline batteries may also be used to power the RE46C190. The RE46C190 smoke-detector IC is available in a 16-pin SOIC 150 mil, package for $0.94 each, in 10,000-unit quantities. The RE46C190 is available now.
Microchip Technology introduced the RE46C162/3 Ion and RE46C165/6/7/8 (RE46C16X) photo smoke-detector ICs with alarm memory. RE46C16X ICs feature alarm memory, which enables the ICs to quickly determine which detector in an interconnected loop triggered an alarm. A charge-dump feature allows the alarm on all interconnected devices to stop sooner. The ICs’ low energy use enables smoke detectors with a battery life of 10 years, and an interconnect filter enables a connection to other devices, such as CO detectors.