The Richtek USA Inc. RT5509WSC is an integrated circuit that falls under the linear amplifiers - audio category. This product is a class D type with features such as I²C, I²S, mute, PWM, short-circuit and thermal protection, and volume control.

• Amplifier Class: Class D
• Features: I²C, I²S, Mute, PWM, Short-Circuit and Thermal Protection, Volume Control
• Packaging: Tape and Reel
• Standard Package: 1,500
• Mounting Type: SMD (SMT)
• Output Type: 1-Channel (Mono)
• Maximum Output Power: 4.4W x 1 @ 8Ohm
• Voltage Supply: 1.71V ~ 2V
• Supplier Device Package: 48-WLCSP (3.04x2.99)
• Temperature Range: -40°C ~ 85°C (TA)