AH286-WL-7

PART OBSOLETE – NO ALTERNATE PART AH286 HALL-EFFECT SMART FAN MOTOR CONTROLLER OBSOLETE – PART DISCONTINUED Description Pin Assignments The AH286 is a single-chip solution for driving two-coil brushless direct current (BLDC) fans and motors. The device includes a Halleffect sensor, dynamic offset correction and two complementary open-drain output drivers with internal Zener diode protection. (Top View) To help protect the motor coils, the AH286 provides Rotor Lock Protection which shuts down output drives if rotor lock is detected. The device automatically re-starts when the rotor lock is removed. A Rotor-lock Detect (RD) output flag allows external monitoring of any motor locks. Vdd 1 GND 2 5 RD 286 DO 3 74 DOB SOT89-5 The AH286 is available in SOT89-5 package. Features • • • • • • • • • • • Single-chip Solution Operating Voltage: 3.8V to 20V Built-in Hall Sensor and Input Amplifier Rotor-lock Detect (RD) Flag Rotor Lock Protection (Lock detection, output shutdown and automatic re-start) Built-in Zener Protection For Output Driver Average output current up to 500mA Packaged in SOT89-5 Green Molding Compound Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) Notes: Applications • • Two-Coil BLDC Cooling Fans Low to Medium Voltage, Low Power BLDC Motors 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain