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AH285-PL-B
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Product Detailed Parameters
- Description：IC HALL FAN CTRLR 500MA 5-SIP
- Series：*
- Mfr：Diodes Incorporated
- Package：Bulk
- Motor Type - Stepper：-
- Motor Type - AC, DC：-
- Function：-
- Output Configuration：-
- Interface：-
- Technology：-
- Step Resolution：-
- Applications：-
- Current - Output：-
- Voltage - Supply：-
- Voltage - Load：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The AH285-PL-B is a monolithic Hall effect sensor and motor controller designed for driving two-coil brushless DC (BLDC) fans. It integrates a Hall sensor, dynamic commutation logic, and output drivers into a single chip. The device operates on a supply voltage range of 3.8V to 20V with a maximum supply current of 500mA. It features an open-collector output configuration capable of sourcing up to 500mA. The component is housed in a 5-SIP package and supports through-hole mounting. It includes temperature compensation and functions as a unipolar switch with specific magnetic trip and release thresholds.
Feature Summary
- Integrates Hall effect sensing with dynamic commutation logic for BLDC fan control
- Provides complementary open-collector transistor outputs for direct motor coil driving
- Includes internal temperature compensation for stable operation across operating ranges
Applications
- Driving two-coil brushless DC fans
- Brushless DC motor control systems
- Thermal management modules requiring integrated Hall sensing
Procurement Notes
Verify the exact suffix PL-B against the manufacturer's current datasheet to confirm pinout and electrical specifications. Confirm RoHS3 compliance status if required by your assembly process. Check for obsolescence notices or product change notifications (PCN) as this component family has undergone lifecycle changes. Ensure the 5-SIP package matches your PCB footprint requirements.
Selection Notes
Select this component when a single-chip solution for two-coil BLDC fans is required. It eliminates the need for external Hall sensors and discrete driver transistors. Verify that the 3.8V to 20V supply range aligns with your system voltage. The 500mA output current capability must meet the motor coil drive requirements. Consider the 5-SIP through-hole package constraint during mechanical design.
Part Context
The AH285 series from Diodes Incorporated represents a family of fully integrated brushless DC fan motor controllers. These devices combine the Hall effect sensor, control logic, and power stage into one unit. The AH285 specifically targets two-coil configurations, simplifying the design compared to multi-phase controllers. It is part of a broader portfolio including variants like the AH285-YL-13 for surface mount applications.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. The AH285-PL-B may be obsolete; consult the manufacturer for current alternatives within the AH285 family or similar two-coil BLDC controllers.
