MAX4295ESE+

Audio Amplifiers Overview

The MAX4295ESE+ is a mono, switch-mode Class D audio power amplifier manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +2.7V to +5.5V supply and delivers up to 2W of continuous output power to a 4Ω load at 5V. The device features an efficiency of 87% with a total harmonic distortion plus noise (THD+N) of 0.4%. It includes logic-programmable PWM frequency selection (125kHz, 250kHz, 500kHz, 1MHz), low-power shutdown mode, thermal protection, and undervoltage lockout. The component is housed in a space-saving 16-pin Narrow SO package.

Audio Amplifiers Feature Summary

• Bridge-tied load (BTL) configuration eliminates the need for output isolation capacitors.
• Logic-programmable pulse-width modulator allows optimization of external filter size and cost.
• Clickless power-up and shutdown transitions prevent audible pops during operation.
• Integrated thermal overload protection and 1A current limit ensure robust performance.

Audio Amplifiers Applications

• Portable multimedia devices
• Battery-powered speakers
• Cordless phones

Audio Amplifiers Procurement Notes

Verify the specific ordering suffix 'ESE+' corresponds to the 16-pin Narrow SO package and -40°C to +85°C temperature range. Confirm that the component meets RoHS compliance requirements as indicated in official documentation. Ensure compatibility with single-supply voltage rails between 2.7V and 5.5V for the intended application design.

Audio Amplifiers Selection Notes

Select this component for applications requiring high efficiency and low quiescent current in portable audio systems. The BTL architecture simplifies design by removing large DC-blocking capacitors. Consider the programmable switching frequency to balance filter component size against efficiency and THD performance based on specific acoustic requirements.

Audio Amplifiers Part Context

This part belongs to the MAX4295 series of mono, 2W, switch-mode audio power amplifiers. It is designed for general-purpose high-power audio applications where battery life and sound quality are critical. The series offers flexibility through selectable PWM frequencies and integrated protection features suitable for various consumer electronics.

Audio Amplifiers Replacement Considerations

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

Audio Amplifiers FAQ

How is the PWM switching frequency configured?

The internal oscillator frequency is programmed via two logic inputs, FS1 and FS2, allowing selection among 125kHz, 250kHz, 500kHz, and 1MHz.

What protection mechanisms are included?

The device includes thermal overload protection that disables the H-bridge if junction temperature exceeds +145°C, and a 1A current limit circuit.