A89304 Datasheet | Allegro MicroSystems

Features AND BENEFITS - AEC-Q100 qualified - Speed curve configuration via EEPROM - I2C serial port - Sinusoidal modulation for reduced audible noise and low vibration - Sensorless (no Hall sensors required) - Low RDS(ON) power MOSFETs - PWM or analog speed input - FG speed output - Slew rate control - Lock detection - Soft start - Low power standby mode - Overcurrent protection - Overvoltage protection PACKAGE: Not to scale 28-contact QFN with exposed thermal pad and wettable flank 5 mm × 5 mm × 0.90 mm (ET package) DESCRIPTION The A89304 is a single-chip solution to address a wide range of cooling fan systems, including ADAS GPU/CPU cooling, infotainment, and HUD, as well as auxiliary cooling fans and pumps. It has a fully integrated sensorless sinusoidal algorithm with integrated closed-loop speed control; no software programming is required. This allows for system design in a very tiny footprint by having integrated MOSFETs and only 5 external ponents required. In addition, the A89304 eliminates the need for a microcontroller. The device embeds Allegro’s innovative algorithms such as Zero Torque Position Detection (ZTPD) and Automatic Phase Advance. These Features not only improve startup performance but also enhance motor efficiency at high speed. The A89304 is available in a 28-contact 5 mm × 5 mm QFN with exposed thermal pad and wettable flank (suffix ET). APPLICATIONS Thermal management for: - ADAS CPU - Lidar - Radar - Vision systems - LED...