Melexis MLX91219LVA-AAA-503-CR

The MLX91219 is a monolithic Hall-effect sensor which is sensitive to the flux density applied orthogonally to the IC surface. The sensor provides an analog output voltage proportional to the applied magnetic flux density.

The transfer characteristic of the MLX91219 is factory trimmed over temperature, and is programmable (offset, sensitivity, filtering, internal overcurrent threshold) during end-of-line customer calibration. With the 400kHz bandwidth and fast response time, it is particularly adapted for high speed applications such as inverters and converters where fast response time due to fast switching is required.

In a typical current sensing application, the sensor is used in combination with a ring shaped soft ferromagnetic core. This core is recommended to be laminated for high bandwidth applications. The MLX91219 is placed in a small air gap and the current conductor – a bus bar or a cable – is passed through the inner part of the ferromagnetic ring. On the one hand the ring concentrates and amplifies the magnetic flux seen by the sensor IC, and at the same time it attenuates external magnetic field disturbances.

• End-of-line programmable sensor
• Ratiometric analog output
• Flexible Supply Voltage with factory selectable 5V or 3.3V mode
• Measurement range from ±12.5 to ±400mT
• High speed sensing ■ DC to 400kHz bandwidth ■ 2μs response time
• High linearity down to ±0.5% full scale
• Low noise
• AEC-Q100 – Grade 0 Automotive Qualification
• Very low thermal drift for wide temperature range ■ Offset drift (<5mV) Sensitivity drift (<1%)
• Internal overcurrent detection
• RoHS compliant
• Available in SIP4-VA (MSL-1) and SOIC8 packages (MSL-3)

• High Voltage Traction Motor Inverter
• 48V Boost Recuperation Inverter
• DCDC Converter
• Smart Battery Junction Boxes
• Smart Fuse Overcurrent Detection
• Redundant monitoring of Battery Management System (BMS)