MLX91219中文资料迈来芯数据手册PDF规格书

Features and Benefits

▪ End-of-line programmable sensor

▪ Ratiometric or fixed (SOIC8 package only)

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 and external (SOIC8 package only)

overcurrent detection

▪ RoHS compliant

▪ Available in SIP4-VA (MSL-1) and SOIC8

packages (MSL-3)

3. Description

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.

2. Application Examples

▪ High Voltage Traction Motor Inverter

▪ 48V Boost Recuperation Inverter

▪ DCDC Converter

▪ Smart Battery Junction Boxes

▪ Smart Fuse Overcurrent Detection