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Product Detailed Parameters
- Description：IC AMP AB MONO/STEREO 29W 9PDBS
- Series：-
- Mfr：NXP USA Inc.
- Package：Tube
- Type：Class AB
- Output Type：1-Channel (Mono) or 2-Channel (Stereo)
- Max Output Power x Channels @ Load：29W x 1 @ 8Ohm; 14W x 2 @ 4Ohm
- Voltage - Supply：9V ~ 26V
- Features：Depop, Mute, Short-Circuit and Thermal Protection, Standby
- Mounting Type：Through Hole
- Supplier Device Package：9-DBSP
- Package / Case：9-SIP Exposed Tab, Formed Leads
- Operating Temperature：-40°C ~ 85°C (TA)
- Grade：-
- Qualification：-
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Overview
The TFA9843J/N1,112 is a two-channel audio power amplifier in a 9-DBSP package. It operates on a supply voltage of 9V to 26V. In Single-Ended (SE) mode with a 4Ω load at 18V, it delivers up to 8.5W; at 22V, output reaches 14W. In Bridge-Tied Load (BTL) mode with an 8Ω load at 18V, output is 18W; at 22V, it reaches 29W. The device features fixed gains of 26dB for SE and 32dB for BTL configurations.
Feature Summary
- Contains two identical audio power amplifiers configurable as two Single-Ended channels or one Bridge-Tied Load channel.
- Features unique protection circuitry based on multiple internal temperature measurements to maximize output power without unnecessary audio holes.
- Includes standby and mute modes with low standby current consumption and no on/off switching plops.
- Outputs are protected against short-circuits to ground, supply, and across the load, along with thermal protection.
Applications
- Television
- PC speakers
- Boom box
- Mini and micro audio receivers
Procurement Notes
Verify component authenticity through authorized NXP distributors or certified suppliers. Confirm the part number matches TFA9843J/N1,112 exactly. Check for RoHS compliance documentation. Ensure storage conditions meet specified limits. Review datasheet revision history for any updates prior to integration.
Selection Notes
Select this component for applications requiring high efficiency and flexible configuration between SE and BTL modes. Consider thermal management requirements based on ambient temperature and heatsink constraints. Verify input impedance compatibility with source circuits. Evaluate supply voltage ripple rejection needs for specific power supply designs.
Part Context
The TFA9843J belongs to the TFA984 series of audio amplifiers. It is pin-compatible with the TFA9842J and TFA9841J variants. Originally manufactured by Philips Semiconductors, the product line is now managed by NXP USA Inc. The device utilizes a plastic DIL-bent-SIL power package designed for through-hole mounting.
Replacement Considerations
The TFA9842J and TFA9841J are confirmed pin-compatible substitutes within the same family. Verify functional equivalence for specific gain and power requirements before substitution. No other direct cross-model replacements are documented in the provided data.
