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Product Detailed Parameters
- Description：AUDIO POWER
- Series：-
- Mfr：STMicroelectronics
- Package：Bulk
- Type：Class D
- Output Type：4-Channel (Quad)
- Max Output Power x Channels @ Load：49W x 4 @ 2Ohm; 28.5W x 4 @ 4Ohm
- Voltage - Supply：4.5V ~ 18V
- Features：-
- Mounting Type：Surface Mount
- Supplier Device Package：48-LQFP (7x7)
- Package / Case：48-LQFP
- Operating Temperature：-40°C ~ 125°C (TA)
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The HFA80A-F2T is a quad-channel Class-D BTL automotive audio amplifier in LQFP48L (7x7x1.4 mm) tape-and-reel packaging. It operates on a 4.5 V to 18 V supply with 40 V load dump compatibility. Output power reaches typ 4 x 28.5 W/4 Ω at 14.4 V, 1 kHz, THD = 10%. Audio performance includes 0.015% typ THD and 52 μV output noise. The device uses 2 MHz PWM with spread spectrum for CISPR25 Level V compliance.
Feature Summary
- Advanced diagnostics matrix supporting speaker control and system robustness
- I2C full configurability with channel independent mute/play/gain selection
- Immune to pop/tick noise during turn-on/off and battery variations
- Low latency signal processing pipeline suitable for high-speed applications
Applications
- Automotive infotainment systems
- High-fidelity multi-speaker setups
- Noise cancelling audio processing
Procurement Notes
Verify the F2T suffix indicates tape-and-reel packing rather than tray configuration. Confirm the specific order code matches the required package variant. Ensure the application schematic aligns with the provided 3.3 µH inductor and 1 µF capacitor values for optimal filter performance.
Selection Notes
Select this component for designs requiring high integration and low PCB footprint. The 2 MHz switching frequency reduces external LC filter size. Verify that the host microcontroller supports the I2C bus speed and can handle the diagnostic pin interrupts for reliable system monitoring.
Part Context
Part of the HFA80A family utilizing BCD9s technology. Designed specifically for demanding automotive environments with AEC-Q100 qualification. Offers both speaker and line driver options to accommodate various load impedances and system architectures.
Replacement Considerations
HFA80A-F2Y is the identical functional alternative packaged in trays instead of tape and reel.
FAQ
How does the HFA80A achieve EMI compliance?
It utilizes a 2 MHz switching PWM combined with an output clock spread spectrum feature, ensuring compliance with CISPR25 up to Class V.
What diagnostic capabilities are available?
The device features a broad diagnostics matrix including DC/AC load detection, startup shorts detection, overcurrent protection, thermal warnings, and input/output offset detectors accessible via I2C or the CD/DIAG pin.
