This is a PDF document about Hall-effect latches, which mainly introduces its features and characteristics, including symmetrical response, 4.5V to 18V operating range, open-collector output, reverse battery protection, activation with small, commercially available permanent magnets, solid-state reliability, small size, superior temperature stability and resistance to physical stress.
This document provides technical specifications for the UGN3175 and UGN3177 Hall-effect latch sensors. These devices are temperature-stable, stress-resistant sensors designed specifically for electronic commutation in brushless DC motors using multipole ring magnets. Each device integrates a voltage regulator, quadratic Hall voltage generator, temperature compensation circuit, signal amplifier, Schmitt trigger, and an open-collector output on a single silicon chip.
| Supply Voltage Range | 4.5 V to 18 V |
|---|---|
| Continuous Output Current | 15 mA |
| Operating Temperature Range | -20°C to +85°C |
| Output OFF Voltage (Max) | 18 V |
| Operate Point Bop (Typ) UGN3175 | 170 gauss |
| Release Point Brp (Typ) UGN3175 | -180 gauss |
The three package styles available provide a magnetically optimized package, with suffix 'LT' for surface-mount and suffixes 'U' and 'UA' for through-hole mounting.
The typical operate point for the UGN3175 is 170 gauss.