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AH287 (Obsolete)

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

Datasheet

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Description

AH287 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. 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

Built-in Zener Protection for Output Driver

Operating Voltage: 3.8V to 28V

Output Current: IO(AVE) = 400mA

Lead Free Packages: SIP-4L and SOT89-5L

SIP-4L and SOT89-5L: Available in “Green” Molding Compound (No Br, Sb)

Lead Free Finish/ RoHS Compliant

Product Specifications

Product Parameters

Average OutputDrive Current (mA)	500
Frequency Generator (FG) and Rotation Detect	-
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 R_DS(ON)(NMOS and PMOS Combined)	2.25 @ 24V
Typical Zener Breakdown Voltage (V)	55

Technical Documents

Recommended Soldering Techniques

TN1.pdf

RoHS CofC

RoHSFile