MA211F MPOWER | Alldatasheet

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Technical content

Complementary Output Hall Effect Fan Driver  GENERAL DESCRIPTION MA211F are 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, pro tecting diode, Hall plate, amplifier, comparator, and a pair of complementary open-Drain outputs (DO, DOB). While the magnetic flux density (B) is larger than operate point (Bop), DO will turn on (low), and meanwhile DOB will turn off (high). Each output i s latched until B is lower than release point (Brp), and then DO, DOB transfer each state. For DC fan application, sometimes need to test power reverse connection condition. Internal diode only protects chip-side but not for coil -side. If necessary, add on e external diode to block the reverse current from coil-side.  FEATURES - On-chip Hall effect sensor with two different sensitivity and hysteresis settings - Wide operating voltage range: 4.0V~20V - Output sink current up to 0.4A - Built-in FG output - -40°C to 85°C operating temperature - Low Profile SIP-4L Package( Green and Lead Free )  BLOCK DIAGRAM Hall Plate Control Logic Regulator FG DOB DO Amp. GND Thermal shutdown

 PIN ASSIGNMENT The package of MA211F is SIP-4L; the pin assignment is given by:  ORDER / MARKING INFORMATION Order Information Top Marking Package Type MA211 Packing A : Taping XX X P4: SIP-4L Blank: BAG Y Y WW X 211F Part number ID code:internal WW:01~52 Year:15=2015  ABSOLUTE MAXIMUM RATINGS (at TA=25°C) Characteristics Symbol Rating Unit Fan Supply Voltage VCC 20 V FG Voltage VFG 20 V FG Sink Current IFG 20 mA Magnetic Flux Density B Unlimited Gauss Output Current Continuous IO 400 mA Hold 500 Peak (start up) 700 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 Junction Temperature TJ 150 °C Ambient Temperature TA -40 to 85 °C 1.10mm 1.9mm FG DO DOB (Top View) SIP-4L GND (Sensor Location) Name Description FG Rotation speed output DO Output 1 DOB Output 2 GND Ground.