S248 is a fully polarized Hall effect sensor based on mixed signal CMOS technology. This IC adopts advanced chopping stabilization technology, which can provide accurate and stable magnetic switch points
The S248 is a full‑polarity Hall‑effect sensor built with mixed‑signal CMOS technology. It uses a chopping‑stabilized amplifier and an embedded clock to periodically put high‑current circuits into a low‑power sleep mode, extending battery life. When a magnetic field exceeds the set threshold, the output transistor switches to the open (Bop) state; otherwise it stays closed (Brp).\n\nTypical applications include solid‑state switches, cordless‑phone reminder switches, and flip‑cover mobile phone power switches. The device is offered in 3‑pin SOT‑23 and 3‑pin SIP (TO‑92) packages with detailed pinout and mechanical drawings provided. This manual is written in Chinese.
| Operating Supply Voltage (VDD) | 5 V |
|---|---|
| Supply Current (Fault) | 5 mA |
| Output Voltage (VOUT) | 5 V |
| Operating Temperature Range | -40 °C to 85 °C |
| Typical Supply Current (Average) | 5 µA |
| Output Current (Typical) | 1 mA |
| Bop Magnetic Threshold | ±3.8 to ±6.0 mT |
| Brp Magnetic Threshold | ±0.5 to ±2.1 mT |
The device operates from 2.5 V up to 3.5 V, with a nominal supply voltage of 5 V specified for the full‑range version.
The average supply current is about 5 µA under normal conditions.
Pin 1 is VDD (power), Pin 2 is GND (ground), and Pin 3 is the output (Out).