MA284 MPOWER | Alldatasheet

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Technical content

Complementary Output Hall Effect Fan Driver  GENERAL DESCRIPTION MA284 is integrated Hall sensors with output drivers, mainly designed for electronic commutation of brush-less DC Fan. This IC is using HV BCD process internally includes the regulator, prote cting diode, Hall plate, amplifier, comparator, and a pair of complementary open-Drain outputs (DO, DOB). To avoid coil burning, rotor -lock shutdown detection circuit shut down the output driver if the rotor is blocked and then the automatic recovery circu it will try to restart the motor. This function repeats while rotor is blocked. Until the blocking is removed, the motor recovers running normally.  FEATURES - Built-in protecting diode only for chip reverse power connecting - Wide operating voltage range: 3.5V~18V - Output sink current up to 0.6A - On-Chip High sensitivity Hall-effect Sensor - Thermal Shutdown Protection - -40°C to 105°C Operating Temperature - Rotor-locked shutdown and automatically restart function - For 5V and 12V DC motor / FAN systems - Low Profile SIP-4L Package  PIN ASSIGNMENT The package of MA284 is SIP-4L; the pin assignment is given by: 1.10mm 1.9mm VDD DO DOB (Top View) SIP-4L GND (Sensor Location) Name Description VDD Supply Voltage DO Output 1 DOB Output 2 GND Ground.

 BLOCK DIAGRAM Hall Plate Control Logic Regulator VDD DOB DO Amp. GND Thermal shutdown Rotor-locked shutdown and automatically restart  ORDER / MARKING INFORMATION Order Information Top Marking Package Type MA284 Packing A : Taping XXX P4: SIP-4L Blank: BAG Y WW X MA284 Part number ID code:internal WW:01~52 Year: 9=2019  ABSOLUTE MAXIMUM RATINGS (at TA=25°C) Characteristics Symbol Rating Unit Supply Voltage VCC 20 V Reverse VCC Polarity Voltage VRCC -20 V Magnetic Flux Density B Unlimited Gauss Output Current Continuous IO 600 mA Hold 900 Peak (start up) 1200 Power Dissipation PD 550 mW Storage Temperature Range TSTG -65 to +150 °C Thermal Resistance from Junction to case θJC 49 °C/W Thermal Resistance from Junction to ambient θJA 227 °C/W Ambient Temperature TA -40 to 105 °C