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Status

Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 544kB) Download   E-Mail

Description

The MAX4295 mono, switch-mode (Class D) audio power amplifier operates from a single +2.7V to +5.5V supply. The MAX4295 has > 85% efficiency and is capable of delivering 2W continuous power to a 4Ω load, making it ideal for portable multimedia and general-purpose high-power audio applications. The MAX4295 features a total harmonic distortion plus noise (THD+N) of 0.4% (fOSC = 125kHz), low quiescent current of 2.8mA, high efficiency, and clickless power-up and shutdown. The active-low SHDN input disables the device and limits supply current to < 1.5µA. Other features include a 1A current limit, thermal protection, and undervoltage lockout. The MAX4295 reduces the number of required external components. Internal high-speed power-MOS transistors allow operation as a bridge-tied load (BTL) amplifier. The BTL configuration eliminates the need for isolation capacitors on the output. The frequency-selectable pulse-width modulator (PWM) allows the user to optimize the size and cost of the output filter. The MAX4295 is offered in a space-saving 16-pin QSOP or narrow SO package.

An evaluation kit is available:  MAX4295EVKIT  

Key Features		Applications/Uses
+2.7V to +5.5V Single-Supply Operation 2W/Channel Output Power at 5V 0.7W/Channel Output Power at 3V 87% Efficiency (RL = 4Ω, POUT = 2W) 0.4% THD+N (RL = 4Ω, fOSC = 125kHz) Logic-Programmable PWM Frequency Selection (125kHz, 250kHz, 500kHz, 1MHz) Low-Power Shutdown Mode Clickless Transitions Into and Out of Shutdown 1A Current Limit and Thermal Protection Available in Space-Saving Packages 16-Pin QSOP or Narrow SO		AC Amplifiers Battery-Powered Speakers Boom Boxes Cordless Phones Game Cards Palmtop/Notebook Computers PDA Audio Portable Equipment Sound Cards

Diagram

Typical Operating Circuit

Application Notes

Application Note 624: Class D Audio Amplifier Output Filter Optimization - MAX4295 Application Note 1760: Class D Audio Amplifiers Save Battery Life - MAX4295 Application Note 1951: Class D Motor-Speed Control - MAX4295

Evaluation Kits

MAX4295EVKIT

Design Guides

Amplifiers and Sensors (PDF)

Reliability Reports

Reliability Report: MAX4295.pdf Show FIT data for: MAX4295

Software/Models

none

Ordering Information

Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-8 of 8

MAX4295	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX4295EEE			Active	QSOP;16 pin;30.9 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0167 (PDF) Use pkgcode/variation: E16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX4295EEE-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX4295EEE+			Active	QSOP;16 pin;30.9 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0167 (PDF) Use pkgcode/variation: E16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4295EEE+T			Active	QSOP;16 pin;30.9 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0167 (PDF) Use pkgcode/variation: E16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4295ESE			Active	SOIC(N);16 pin;61.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0097 (PDF) Use pkgcode/variation: S16-5*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX4295ESE-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX4295ESE+			Active	SOIC(N);16 pin;61.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0097 (PDF) Use pkgcode/variation: S16+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4295ESE+T			Active	SOIC(N);16 pin;61.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0097 (PDF) Use pkgcode/variation: S16+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

More Information

New Product Press Release 2000-11-09

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