RT5509WSC

Overview

The RT5509WSC is a single-channel Class-D audio amplifier manufactured by Richtek. It delivers an output power of 4.3 W into an 8 Ohm load. The device operates within a supply voltage range from 5.5 V to 1.71 V and maintains a THD+N of -75 dB. It is housed in a WL-CSP-48B package, supports SMD/SMT installation, and functions between -40 C and +85 C.

Feature Summary

• Class-D topology for efficient audio amplification
• Integrated speaker protection mechanisms
• Single-channel configuration

Applications

• Speaker Amplifier with Speaker Protection

Procurement Notes

Verify the specific datasheet version for the RT5509WSC to confirm all electrical parameters and mechanical dimensions. Ensure compatibility with the target PCB layout for the WL-CSP-48B package. Check RoHS compliance status through official manufacturer declarations before finalizing procurement decisions.

Selection Notes

Select this component for applications requiring a single-channel Class-D amplifier with integrated speaker protection. Consider the WL-CSP-48B package size and the specified operating temperature range. Verify that the system power supply aligns with the 5.5 V to 1.71 V input requirements.

Part Context

The RT5509WSC belongs to the Richtek audio amplifier product line, specifically designed for high-efficiency sound reproduction. It falls under the category of Class-D amplifiers, which are commonly used in portable and compact electronic devices where power efficiency and thermal management are critical design factors.

Replacement Considerations

RT5509P-A is listed as an alias for this part number.