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Product Detailed Parameters
- Description：IC AMP D MONO/STER 5.1W 42WLSCP
- Series：-
- Mfr：NXP USA Inc.
- Package：Tape & Reel (TR)
- Type：Class D
- Output Type：1-Channel (Mono) or 2-Channel (Stereo)
- Max Output Power x Channels @ Load：5.1W x 1 @ 8Ohm; 5.9W x 2 @ 6Ohm
- Voltage - Supply：1.65V ~ 1.95V
- Features：Depop, I2C, I2S, Mute, PWM, Short-Circuit and Thermal Protection
- Mounting Type：Surface Mount
- Supplier Device Package：42-WLSCP (3.13x2.46)
- Package / Case：42-UFBGA, WLCSP
- Operating Temperature：-40°C ~ 85°C (TA)
- Grade：-
- Qualification：-
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Overview
The TFA9872AUK/N1Z is a high-efficiency Class-D audio amplifier featuring an integrated adaptive DC-to-DC converter that boosts the supply voltage to 9.5 V. It delivers up to 5.1 W average output power into an 8 Ω load at a 4.0 V battery supply. The device supports Speaker-as-Microphone (SaM) and Receiver-as-Microphone modes, enabling acoustic echo cancellation and specialized recording applications. It operates with digital I2S/TDM inputs and I2C control, housed in a compact 42-bump WLCSP package.
Feature Summary
- Integrates an adaptive DC-to-DC converter for efficient high-power audio output
- Supports Speaker-as-Microphone and Receiver-as-Microphone feedback paths
- Features low-latency PDM input interface for side tone mixing
- Includes comprehensive protection mechanisms such as thermal foldback and overcurrent limiting
Applications
- Mobile phones and tablets
- Portable navigation devices
- Notebooks and netbooks
- IoT applications requiring high-quality embedded audio
Procurement Notes
Verify the specific suffix 'A' against the manufacturer's current product status, as ordering information lists variants like TFA9872AUK/N1 and TFA9872CUK/N1. Confirm RoHS compliance and lead times directly with authorized distributors or NXP Semiconductors, as availability may vary by region and production lifecycle stage.
Selection Notes
Select this component for designs requiring high efficiency and integrated boost conversion without external inductors for the main power rail. Ensure the host processor supports the required I2S/TDM sampling frequencies and I2C control bus. Verify that the application benefits from the SaM feature for wind noise reduction or concert recording scenarios.
Part Context
This part belongs to the TFA9872 series of high-efficiency Class-D amplifiers. It is designed specifically for portable mobile platforms where space constraints and battery life are critical. The series integrates advanced digital interfaces and protection features suitable for modern smartphone and tablet audio subsystems.
Replacement Considerations
Check for direct pin-compatible upgrades within the TFA9872 family, such as the TFA9872CUK/N1 variant. Evaluate newer NXP audio amplifier models if the TFA9872 series is discontinued or if updated features like higher channel counts are required.
