Sensor Solutions

Littelfuse has announced the launch of two next-generation omnipolar magnetic switches, the LF21173TMR and LF21177TMR. These devices combine Tunneling Magnetoresistance (TMR) and CMOS technologies in a compact LGA4 package, providing ultra-low power consumption, exceptional magnetic sensitivity, and fast response for compact, battery-powered systems. Designed for operation across a wide voltage range (1.8 V–5.5 V), the LF21173TMR and LF21177TMR support multiple magnetic thresholds, enabling flexible integration into space-constrained applications such as smart meters, electronic locks, medical devices, and portable consumer electronics. Compared with conventional Hall-effect switches, these TMR devices deliver significantly higher sensitivity and lower power draw, helping engineers build smaller, more energy-efficient, and longer-lasting products.