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AH266 (Not Recommended for New Design (NRND))

NRND = Not Recommended for New Design

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

Datasheet

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Description

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.

Feature(s)

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

Specifications & Technical Documents

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 R_DS(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

Technical Documents

Recommended Soldering Techniques

TN1.pdf

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-2707	2024-12-30	2025-06-30	Product End of Life (EOL)
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)