Diodes Menu Close
Back to Two Phase


Two Phase 12V/24 BLDC All-In-One Fan and Motor Drive Latch

Contact Sales

Log in or register to manage email notifications about changes to datasheets or PCNs for this part.


AH266 is an integrated Hall sensor with output drivers designed for electronic commutation of brush-less DC motor applications. The device includes an on-chip Hall voltage generator for magnetic sensing, a comparator that amplifies the Hall voltage, a Schmitt trigger to provide switching hysteresis for noise rejection, and complementary Darlington open-collector drivers for sinking large current loads. An internal band-gap regulator is used to provide temperature compensated supply voltage for internal circuits and allows a wide operating supply range. If a magnetic flux density (B) is larger than operation point (Bop), DO will turn on (low) and DOB will turn off (high). The output state is latched prior to reaching release point (Brp). If B< Brp, DO will turn off and DOB will turn on. AH266 is rated for operation over temperature range from -20oC to 85 oC and voltage range from 4V to 28V. The devices are available in low cost die forms or rugged 4 pin SIP packages.


  • On-Chip Hall Plate
  • Operating Voltage: 4V~28V
  • Output Current: 400mA (Continuous, 25oC)
  • Reverse Protection Diode Only for Chip Reverse Power Connecting
  • Output Protection Zener Breakdown Vz = 62V (Typ.)
  • Lead Free package: SIP-4L
  • SIP-4L: Available in “Green” Molding Compound (No Br, Sb)
  • Lead Free Finish/ RoHS Compliant
  • Application(s)

  • Dual-Coil Brush-Less DC Motor
  • Dual-Coil Brush-Less DC Fan
  • Revolution Counting
  • Speed Measurement
  • Product Specifications

    Product Parameters

    Operating Voltage (V) 4 to 28 V
    SupplyCurrent (mA) 3.5 mA
    Average OutputDrive Current (mA) 400 mA
    Peak Output Current (mA) 800 mA
    Typical Total RDS(ON)(NMOS and PMOS Combined) 3 @ 24V Ω
    Typical Zener Breakdown Voltage (V) 31 V
    Operating Point Bop Gauss (Min) 10, 0
    Operating Point Bop Gauss (Max) 70, 100
    Release Point Brp Gauss (Min) -70, -100
    Release Point Brp Gauss (Max) -10, -
    Operating Ambient Temperature (°C) -20 to 85 °C

    Related Content


    Technical Documents

    Recommended Soldering Techniques


    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-2527 2021-06-09 2021-09-09 Additional Wafer Source (GFAB, JKFAB), New Bill of Materials (BOM) with PdCu Bond Wire, and Additional Assembly/Test
    (A/T) Site (CAT)