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Product Detailed Parameters
- Description：IC LED DRIVER CTRLR PWM 32QFN
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Controller
- Topology：Constant Current
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：5V
- Voltage - Supply (Max)：37V
- Voltage - Output：70V
- Current - Output / Channel：-
- Frequency：70kHz ~ 700kHz
- Dimming：PWM
- Applications：-
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount, Wettable Flank
- Package / Case：32-VFQFN Exposed Pad
- Supplier Device Package：32-QFN (5x5)
- Grade：Automotive
- Qualification：-
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Overview
The A80803KETASR is a single-channel automotive LED driver IC manufactured by Allegro MicroSystems. It operates as a DC-DC controller with synchronous boost and buck topologies, supporting input voltages from 5 V to 37 V. The device features internal PWM dimming and delivers regulated output currents for high-power LEDs. It is housed in a 32-QFN (5x5 mm) package with exposed pad for thermal management. Rated for junction temperatures up to 150°C, it meets AEC-Q100 standards for automotive reliability.
Feature Summary
- Integrates synchronous boost and buck converters for flexible LED drive configurations
- Supports internal PWM dimming for precise brightness control without external components
- Designed for automotive environments with extended temperature range capabilities
Applications
- Automotive exterior lighting systems
- High-intensity discharge lamp replacement circuits
- Adaptive driving beam headlamp modules
Procurement Notes
Verify the specific suffix 'KETASR' against the official Allegro datasheet to confirm pinout and thermal pad configuration. Ensure compatibility with your PCB layout regarding the 32-QFN exposed pad requirements. Confirm that your system voltage stays within the 5V to 37V input range to avoid damage or malfunction.
Selection Notes
Select this component when a single-channel solution with integrated power switches is required for automotive LED applications. It is suitable for designs needing both boost and buck capabilities in one IC. Consider the 32-QFN package size for space-constrained boards. Verify thermal dissipation needs given the 150°C junction rating.
Part Context
This part belongs to the A80803 series of automotive LED controllers. It is designed by Allegro MicroSystems for high-reliability automotive lighting. The series focuses on integrating power stages with control logic to reduce external component count. It targets modern vehicle lighting architectures requiring efficient and compact driver solutions.
Replacement Considerations
Check for direct substitutes within the A80803 family with different suffixes for packaging variations. Compare pinouts carefully if considering cross-brand alternatives. Ensure any replacement supports the same 32-QFN footprint and thermal characteristics.
