CS35L32-CWZR

Audio Amplifiers Overview

The CS35L32-CWZR is a mono Class D speaker amplifier with integrated dual flash LED drivers and closed-loop monitoring. It features self-boosted Class G operation, delivering 1.7 W into an 8 Ω load at 10% THD+N. The device operates with a battery supply (VP) of 3.0 V to 5.25 V and an analog supply (VA) of 1.71 V to 1.89 V. Key specifications include a 102 dB signal-to-noise ratio, 2.5 mA quiescent current, and 90% efficiency. It utilizes a 30-ball WLCSP package and supports I²C control and I²S data reporting.

Audio Amplifiers Feature Summary

• Integrated dual LED drivers with programmable Flash, Flash-Inhibit, and Movie Mode currents managed via I²C.
• Closed-loop ΔΣ modulation for low distortion audio amplification with automatic Class G boost supply switching.
• Comprehensive protection mechanisms including latched overtemperature shutdown, short-circuit detection, and undervoltage lockout.
• Real-time monitoring of speaker voltage, speaker current, and battery voltage with digital reporting over the I²S bus.

Audio Amplifiers Applications

• Smart phones
• Tablets

Audio Amplifiers Procurement Notes

Verify the specific revision suffix and manufacturing date code against the latest datasheet DS963F5. Confirm that the 30-ball WLCSP package dimensions match the target PCB footprint. Ensure the host processor supports the required I²C control interface and I²S serial audio/data port for status monitoring. Check for any obsolescence notices or last-time buy notifications from Cirrus Logic.

Audio Amplifiers Selection Notes

Select this component for applications requiring a combined audio amplifier and high-current LED driver in a minimal footprint. The integrated Class G boost eliminates the need for external boost circuitry for the audio stage. Consider the thermal performance within the 30-ball WLCSP package when designing for continuous high-power output. Verify compatibility with the differential analog input requirements and the specific gain settings needed for the audio source.

Audio Amplifiers Part Context

The CS35L32 belongs to Cirrus Logic's line of power-integrated audio ICs designed for mobile devices. It combines a mono full-bridge Class D amplifier with a self-boosted Class G supply and dual LED drivers. This integration reduces the bill of materials and board space compared to discrete solutions. The device is optimized for smart phones and tablets where power efficiency and compact design are critical.

Audio Amplifiers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.