Description
The SW03B-V1 is a low-power PIR (Passive Infrared) controller chip manufactured using CMOS technology. It features a mixed-mode architecture combining analog and digital circuitry, ensuring highly stable performance across various operating conditions. Utilizing third-generation PIR detection technology and an integrated high-precision algorithm unit, the chip automatically adapts to the environment, filters out interference, and effectively extracts human presence signals, achieving a maximum detection range of over ten meters. The application circuit is remarkably simple; no calibration is required during R&D or production, significantly reducing manufacturing costs and saving space.

Product Applications
‧ Automatic, energy-saving lighting for gardens, garages, corridors, stairwells, and similar areas.
‧ Surveillance, alarm, and doorbell systems for homes, shops, offices, factories, and other locations.
‧ Automatic switching systems for exhaust fans and ceiling fans.
‧ Energy-saving and control systems for digital products such as digital photo frames, displays, digital cameras, and hunting cameras.
‧ Control systems for smart toys.

Product Features
‧ Industrial-grade standards ensure high stability, strong interference immunity, and a wide operating temperature range, facilitating compliance with various certifications.
‧ Built-in operational amplifier enables signal pre-processing and compatibility with a wide range of PIR sensors.
‧ Integrated peripheral circuitry for the operational amplifier eliminates the need for manual tuning during R&D and production, saving both development time and manufacturing costs.
‧ Built-in high-precision algorithm unit automatically adapts to the environment, effectively distinguishing human signals from interference.
‧ Offers long sensing range and a significantly lower false-trigger rate compared to traditional control chips.
‧ Built-in high-precision crystal oscillator.
‧ Built-in 2-second blanking timer effectively suppresses repeated false triggering.
‧ Adjustable control signal output delay with high precision and a wide timing range.
‧ Supports external connection to a phototransistor or photoresistor; remains inactive during daylight.
‧ Simple application circuitry ensures high product consistency in mass production, low return rates, and a compact final product size.
‧ SOP8 package; compact chip size; compliant with EU RoHS standards.