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Parametric Charts Reference Designs

Smoke Detector, CO Detector and Horn Driver ICs

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If you are creating a smoke detector, carbon monoxide (CO) detector or security application, we offer a large portfolio of low-power and cost-effective ICs with a variety of features to meet your design’s requirements. These mix-and-match solutions include low-power ionization and photoelectric smoke detector ICs, CO detector ICs and stand-alone horn driver ICs. Our global technical support team is also available to assist you with your smoke detector design.

Smoke Detector ICs

Our ionization and photoelectric smoke detector ICs are complete solutions for creating a low-cost smoke detector, while our ionization smoke detector front ends can be combined with one of microcontrollers (MCUs) to create a complete design. Whether you are developing an ionization smoke alarm or a photelectric smoke alarm, we offer devices with the following features:

Low battery detection
Reverse battery protection
Temporal continuous tone pattern horn driving
Low-current, low-power operation
SOIC or PDIP package
Interconnect pin

We also provide a selection of integrated devices that include these additional features:

Interconnect for sounding multiple connected units
Sensitivity timer
Internal power-on reset
Reverse battery protection
Diagnostic mode for production calibration

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CO Detector ICs

These low-power companion devices provide all the necessary analog, interface, and power management functions to build a microcontroller-based CO or toxic gas detector, including:

Power management system
Boost regulator
High-performance op amp
Microcontroller voltage regulator
Piezoelectric horn driver
LED driver
Bidirectional interconnect

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Horn Driver ICs

Ranging from simple to more highly integrated solutions, our horn driver ICs can be used to drive piezoelectric horns in safety, security, toys and other applications.

SOIC or PDIP package
Low-voltage horn driving
Low-current, low-power operation
Charge pump
Power good indicator
Boost switcher
LDO
LED driver
Low battery indicator
Brownout detection
Interconnect for sounding multiple connected units

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