MLX91221 Integrated Current Sensor IC Datasheet Features and Benefits Applications Factory trimmed AC and DC current sensor AC and DC Chargers Analog ratiometric or fixed output voltage Electric Drives Combining sensing element, signal DCDC converters conditioning & isolation in SOIC package Solar No application programming required Power Supplies High speed sensing Demand/Load control DC to 300kHz bandwidth Description 2s response time Robust against external magnetic fields The MLX91221 is an Integrated Current Sensor that No magnetic hysteresis senses the current flowing through the low impedant leadframe of the SOIC package. By virtue Double overcurrent detection (SOIC-16) of fixing the current conductor position with Low ohmic losses of integrated conductor respect to the monolithic CMOS sensor, a fully integrated Hall-effect current sensor is obtained, 0.9m SOIC-8 / 0.75m SOIC-16 that is factory calibrated. SOIC-8 narrow body and SOIC-16 wide body package, RoHS compliant Inside the package, the magnetic flux density generated by the current flow is sensed Lead free component, suitable for lead differentially by two sets of Hall plates. As a result free soldering profile up to 260C, MSL3 the influence of external disturbing fields is Rated voltage isolation minimized in the fast analog front-end. The residual signal is amplified to provide a high-speed 2.4kV for SOIC-8 RMS linear analog output voltage. 4.8kV for SOIC-16 RMS The close proximity of the Hall plates to the current conductor ensures a high signal-to-noise ratio and an accurate signal over temperature. With this miniaturization, high voltage isolation ratings are still maintained between the primary and their opposing secondary side leads of the package. SOIC-8 SOIC-16 IEC/UL 62368-1:2014 nd (2 edition) MLX91221 Integrated Current Sensor IC Datasheet Contents Features and Benefits ................................................................................................................................ 1 Applications ............................................................................................................................................... 1 Description ................................................................................................................................................ 1 Contents .................................................................................................................................................... 2 1. Ordering Information ............................................................................................................................ 4 2. Functional Diagram ............................................................................................................................... 6 3. Glossary of Terms .................................................................................................................................. 8 4. Pinout .................................................................................................................................................... 9 5. Absolute Maximum Ratings ................................................................................................................. 11 6. MLX91221 General Electrical Specification .......................................................................................... 12 7. MLX91221 General Current Specification ............................................................................................ 13 8. MLX91221 Voltage Isolation Specification ........................................................................................... 14 9. MLX91221 Timing Specification ........................................................................................................... 15 10. MLX91221 Accuracy Specification ..................................................................................................... 16 10.1. Definitions ....................................................................................................................................... 16 10.2. MLX91221KDx-ABF-010 Specifications .......................................................................................... 18 10.3. MLX91221KDx-ABR-020 Specifications ......................................................................................... 19 10.4. MLX91221KDx-ABF-020 Specifications .......................................................................................... 20 10.5. MLX91221KDx-ABF-120 Specifications .......................................................................................... 21 10.6. MLX91221KDx-ABF-025 Specifications .......................................................................................... 22 10.7. MLX91221KDx-ABR-038 Specifications ......................................................................................... 23 10.8. MLX91221KDx-ABF-050 Specifications .......................................................................................... 24 10.9. MLX91221KDx-ABR-050 Specifications ......................................................................................... 25 10.10. MLX91221KDx-ABF-075 Specifications ....................................................................................... 26 11. MLX91221 Overcurrent Detection ..................................................................................................... 27 11.1. General ............................................................................................................................................ 27 11.2. Electrical Specifications .................................................................................................................. 28 11.3. Internal Overcurrent Detection Principle ...................................................................................... 28 11.4. External Overcurrent Detection Principle ..................................................................................... 29 12. Recommended Application Diagrams ................................................................................................ 30 DOC. 3901091221, REVISION 1.0 - DECEMBER 7, 2020 Page 2 of 36