IC eases smoke-detector design, manufacturing

Microchip Technology Inc. announced the RE46C190 3V photo smoke-detector IC with horn driver and boost regulator.

The smoke-detector IC offers low-voltage operation with programmable calibration and operating modes, enabling operating modes to be selected and calibrated during manufacturing. This simplifies smoke-detector design and manufacturing, and reduces component count, and cost. Additionally, the IC's low operating current of 8 µA typical enables up to 10 years of operation from a single Lithium battery. Two Alkaline batteries may also be used to power the RE46C190.

Key highlights:

• Two AA battery operation
• Low quiescent current consumption
• Internal IRED driver with Programmable IRED Current
• Programmable photo amplifier
• Programmable smoke sensitivity levels
• 9 minute timer for reduced sensitivity operation
• Chamber test with programmable sensitivity level
• Internal low battery test with programmable threshold
• Interconnect up to 40 detectors
• Local alarm memory
• Temporal or continuous horn pattern
• All internal oscillator
• Internal power on reset
• Available 16L N SOIC

Pricing: $0.94 each, in 10,000-unit quantities.

Availability: Now in a 16-pin SOIC 150 mil, package.

Datasheet: Click here.