AH284

AH284 Hall-Effect Smart Fan Motor Controller „ Features - On chip Hall sensor - Rotor-locked shutdown - Automatically restart - Built-in Zener protection for output driver - Operating voltage: 3.8V~20 V - Output current: IO(AVE) = 500mA for SIP-4/SOT89-5 - Output current: IO(AVE) = 400mA for SOT23-5 - Package: SIP-4L, SOT23-5L, SOT89-5L „ General Description AH284 is a monolithic fan motor controller with Hall sensor’s capability. It contains two complementary 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 284 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 5 DOB 4 VCC 1 GND 2 DO 3 SOT89-5L 284 5 NC 284 7 4 DOB 1 NC 2 3 GND DO SOT23-5 „ Ordering Information AH284 X - X X X Wafer Body Blank or A~Z : if necessary to specify Package P: SIP-4L W:SOT23-5L 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 lia...