AH292

AH292 Low Voltage Hall-Effect Smart Fan Motor Controller „ Features - On chip Hall sensor - Rotor-locked shutdown - Automatically restart - Frequency generator (FG) output - Buil t-in Zener protection for output driver - Operating voltage: 1.8V~5.75 V - Output current: IO( AVE ) = 400 mA - Package: SIP-5L, SOT23-5L, SOT89-5L „ General Description AH292 is a monolithic fan motor controller with Hall sensor’s capability. It contains two complementary open-collector transistors for motor’s coil driving, automatic lock current shutdown, and recovery protections. Besides, frequency generator (FG) output is for speed detection relatively. To avoid coil burning, rotor-lock shutdown detection circuit shut down the output driver if the rotor is blocked and then the automatic recovery circuit will try to restart the motor. These protecting actions are repeated and periodic during the blocked period. Until the blocking is removed, the motor recovers running normally. „ Pin Configuration FG 5 DOB 4 292 ( Front View ) 1 : FG 2 : VCC 3 : DO 4 : DOB 5 : GND VCC 1 292 5 FG AH292 7 4 DOB SOT89-5L GND 2 3 1 2 DO 3 1 2 3 4 5 SIP-5L VCC GND DO SOT23-5 „ Pin Descriptions Symbol FG VCC DO DOB GND Description Frequency generation Input power Output pin Output pin Ground „ Ordering Information AH292 X - X X X Wafer Body Blank or A~Z : if necessary to specify Package P: SIP-5L W: SOT23-5L Y: SOT89-5L Lead L : Lead Free Blank: Normal Packing Blank : Tube or Bulk A : Tape & Reel Thi...