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Product Detailed Parameters
- Description：AUTOMOTIVE ASIL-B SOLUTION
- Series：-
- Mfr：Allegro MicroSystems
- Package：Bulk
- Type：-
- Topology：-
- Internal Switch(s)：-
- Number of Outputs：-
- Voltage - Supply (Min)：-
- Voltage - Supply (Max)：-
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：-
- Dimming：-
- Applications：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The APM80905KNBBTR-1 is a 42V, 4A LED Buck Driver Module manufactured by Allegro MicroSystems. It operates within an input voltage range of 4.5V to 36V and delivers a maximum output current of 4A. The device utilizes a buck topology with an adjustable output voltage. It supports PWM dimming functionality and functions at a switching frequency of 11.5 kHz. The component is housed in a QFN-32 package and is rated for operation between -40°C and +150°C.
Feature Summary
- Integrated synchronous buck driver module designed for high-current LED applications
- Supports pulse-width modulation (PWM) dimming for precise brightness control
- Automotive-grade solution compliant with ASIL-B safety standards
Applications
- Automotive exterior lighting systems
- High-power LED headlamp modules
- ASIL-B compliant automotive illumination circuits
Procurement Notes
Verify the specific suffix '-1' against official Allegro documentation to confirm pinout and functional equivalence, as suffixes often denote tape-and-reel packaging or specific manufacturing revisions. Ensure the procurement source provides valid traceability data for automotive-grade components. Confirm that the QFN-32 package matches your PCB footprint requirements before ordering.
Selection Notes
Select this component when designing automotive LED drivers requiring up to 4A output current within a 42V system architecture. It is suitable for applications demanding ASIL-B compliance and wide operating temperature ranges. Compare its 11.5 kHz fixed frequency against other models if EMI constraints require different switching frequencies. Ensure the thermal design accommodates the QFN-32 package dissipation characteristics.
Part Context
This part belongs to the APM80900 series of LED Buck Driver Modules from Allegro MicroSystems. The series focuses on integrated solutions for automotive lighting, combining power switches and control logic in a single package. This specific model represents a higher current variant compared to the base APM80900 series, tailored for more demanding illumination loads.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided reference material. Verify compatibility with existing designs by cross-referencing the datasheet for the APM80900 series family members.
