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SLWS237A – NOVEMBER 2012 – REVISED NOVEMBER 2014 DRV11873 12-V, 3-Phase, Sensorless BLDC Motor Driver
1 Features 3 DRV11873 is a three-phase, sensorless motor driver
with integrated power MOSFETs with drive current
capability up to 1.5-A continuous and 2-A peak.
DRV11873 is specifically designed for fan motor drive
applications with low noise and low external
component count. DRV11873 has built-in overcurrent
protection with no external current sense resistor
needed. The synchronous rectification mode of
operation achieves increased efficiency for motor
driver applications. DRV11873 outputs FG and RD to
indicate motor status with open-drain output. A 150В°
sensorless BEMF control scheme is implemented for
a three-phase motor. DRV11873 is available in the
thermally-efficient 16-pin TSSOP package. The
operation temperature is specified from –40°C to
125В°C. 1 Input Voltage Range: 5 to 16 V …
