AH287 Datasheet | Anachip

Features - On chip Hall sensor - Rotor-locked shutdown - Automatically restart - Built-in Zener protection for output driver - Operating voltage: 3.8V~28V - Output current: IO(AVE) = 400m A - Package: SIP-4L, SOT89-5L - General Description AH287 is a monolithic fan motor controller with Hall sensor’s capability. It contains two plementary open-drain drivers for motor’s coil driving, automatic lock shutdown and restart function 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. This function repeats while rotor is blocked. Until the blocking is removed, the motor recovers running normally. - Pin Assignment 287 Front View 1 : VCC 2 : DO 3 : DOB 1 2 3 4 4 : GND - Pin Descriptions Name VCC DO DOB GND NC Description Input power Output pin Output pin Ground Not connected SIP-4L VCC 1 GND 2 DO 3 SOT89-5L 287 5 NC 7 4 DOB - Ordering Information AH287 X - X X X Wafer Body Blank or A~Z : if necessary to specify Package P: SIP-4L Y: SOT89-5L Lead L : Lead Free Blank: Normal Packing Blank : Tube or Bulk A : Tape & Reel This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent acpany the sale of the product. Rev. 0.1 Jan 17, 2005 1/7 High Voltage Hall-Effect Smart Fan Motor Controller - Block Diagram (SIP4) VCC 1 Lock shutdown and Automatic recovery Regulator Hall Plate Amp. Control Logic 4...