TPA6203A1DRBR

Overview

The TPA6203A1DRBR is a 1.25-W mono fully differential Class-AB audio power amplifier manufactured by Texas Instruments. It operates from a single supply voltage ranging from 2.5 V to 5.5 V and delivers 1.25 W of output power into an 8-Ω load at 5 V with 1% THD+N. The device draws a typical quiescent supply current of 1.7 mA and features shutdown control with less than 10 μA standby current. It utilizes a space-saving 3 mm x 3 mm 8-pin SON (DRB) package.

Feature Summary

• Fully differential architecture eliminates the need for input coupling capacitors and reduces RF rectification interference.
• High power supply rejection ratio (PSRR) of 90 dB minimizes noise from battery-powered sources.
• Fast start-up time of 4 μs with minimal pop-and-click artifacts suitable for portable devices.
• Optional bypass capacitor design reduces external component count and PCB area.

Applications

• Wireless handsets
• Cellular phones
• Personal Digital Assistants (PDAs)

Procurement Notes

Verify the specific DRB package suffix against the latest Texas Instruments Package Option Addendum to ensure correct pinout and thermal pad specifications. Confirm RoHS compliance status as manufacturing processes may update environmental declarations over time. Cross-reference the ordering number with official distributor catalogs to validate availability and lead times before finalizing procurement plans.

Selection Notes

Select this component when designing compact, battery-operated audio systems requiring high efficiency and low distortion. The fully differential input allows direct connection to DACs without additional biasing networks. Ensure the application supports the 2.5 V to 5.5 V supply range and that the thermal dissipation requirements fit within the 3x3 mm QFN footprint constraints.

Part Context

This part belongs to the TPA6203A1 family of mono audio amplifiers. It shares functional similarities with other members like the TPA6204A1 but differs in output power and package options. The DRB suffix specifically denotes the 8-pin SON package variant, distinct from the MicroStar Junior BGA or MSOP versions available in the same series.

Replacement Considerations

Direct substitutes include other TPA6203A1 variants such as TPA6203A1DGN or TPA6203A1ZQVR, provided the package form factor matches the PCB layout. Verify pin compatibility and thermal performance when swapping between different package types within the same product family.