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AH289 (NRND)

NRND = Not Recommended for New Design

Two Phase 9V/12V/24V BLDC All-In-One Fan and Motor Driver with Output Zener Clamp

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Description

AH289 is a monolithic fan motor controller with Hall sensor’s capability. It contains two complementary open-drain transistors for motors coil driving, an automatic lock current shutdown, and recovery protection. In addition, the Rotor-State Detection (RD) output is for Rotor-State Detection. Rotor-lock shutdown detection circuit turns off the output driver when the rotor is blocked to avoid coil overheat. Then, the automatic recovery circuit will restart the motor. These protected actions are repeated and periodic during the blocked period. Until the blocking is removed, the motor recovers and runs normally.

Feature(s)

  • On Chip Hall Sensor
  • Rotor-Locked Shutdown
  • Automatically Restart
  • Rotor-State Detection (RD) Output
  • Built-in Zener Protection for Output Driver
  • Operating Voltage: 3.8V to 28V
  • Output Current: IO (AVE) = 400mA
  • Lead Free Package: SOT89-5L
  • SOT89-5L: Available in “Green” Molding Compound (No Br, Sb)
  • Lead Free Finish/ RoHS Compliant
  • Specifications & Technical Documents

    Product Parameters

    Average OutputDrive Current (mA)

    500

    Frequency Generator (FG) and Rotation Detect

    RD

    Lock Detect, Shut-Down and Auto Start

    Yes

    Operating Ambient Temperature (°C)

    -40 to 100

    Operating Point Bop Gauss (Max)

    60

    Operating Point Bop Gauss (Min)

    10

    Operating Point Bop Gauss (Typ)

    30

    Operating Voltage (V)

    3.8 to 28

    Peak Output Current (mA)

    700

    Release Point Brp Gauss (Max)

    -10

    Release Point Brp Gauss (Min)

    -60

    Release Point Brp Gauss (Typ)

    -30

    SupplyCurrent (mA)

    2

    Typical Total RDS(ON)(NMOS and PMOS Combined)

    2.25 @ 24V

    Typical Zener Breakdown Voltage (V)

    55

    Related Content

    Packages

    Technical Documents

    Recommended Soldering Techniques

    TN1.pdf

    RoHS CofC

    Purchase & Availability

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    Product Change Notices (PCNs)

    A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

    PCN # Issue Date Implementation Date Subject
    PCN-2770 2025-10-30 2025-10-30 Add Fab Site Code, Country of Diffusion (COD) and Assembly Site Origin (ASO) on Product and Shipping Labels for all Diodes Products
    PCN-2505 2021-01-26 2021-07-26 Device End of Life (EOL)