MAX9730
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MAX9730

2.4W, Single-Supply Class G Power Amplifier

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Highest Output Power Speaker Amplifier From a Battery

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 4
1ku List Price Starting From $1.12
Features
  • 2.7V to 5.5V Operation
  • Integrated Charge-Pump Power Supply
  • 63% Efficiency (VCC = 5V, POUT = 1W)
  • 2.4W Output Power into 8Ω at VCC = 5V
  • Clickless/Popless Operation
  • Small Thermally Efficient Packages
    • 2mm x 2.5mm 20-Bump WLP
    • 4mm x 4mm 28-Pin TQFN
Additional Details
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The MAX9730 features a mono Class G power amplifier with an integrated inverting charge-pump power supply. The charge pump can supply up to 500mA of peak output current over a 2.7VDC to 5.5VDC supply voltage range, guaranteeing up to 2.4W output power into an 8Ω load. The 2.4W output power allows for transient audio content to remain unclipped as the battery rail collapses over time.

The MAX9730 maximizes battery life by offering high-performance efficiency. Maxim's proprietary output stage provides efficiency levels greater than Class AB devices without the EMI penalties commonly associated with Class D amplifiers. High efficiency allows the MAX9730 to be packaged in a WLP package without derating the output power handling capability.

The device utilizes fully differential inputs and outputs, comprehensive click-and-pop suppression, shutdown control, and soft-start circuitry. The MAX9730 is fully specified over the -40°C to +85°C extended temperature range and is available in ultra-small, lead-free, 20-bump WLP (2mm x 2.5mm) and 28-pin TQFN (4mm x 4mm) packages.

Applications

  • Cellular Phones
  • Handheld Gaming Consoles
  • MP3 Players
  • Notebook Computers
  • Personal Media Players
  • Smartphones
Part Models 4
1ku List Price Starting From $1.12

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX9730ETI+
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MAX9730ETI+T
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MAX9730EWP+G45
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MAX9730EWP+TG45
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

MAX9730EVKIT

Evaluation Kit for the MAX9730

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MAX9730EVKIT

Evaluation Kit for the MAX9730

Evaluation Kit for the MAX9730

Features and Benefits

  • 5V Single-Supply Operation
  • Fully Differential Output
  • Delivers 2.4W into an 8Ω Speaker
  • Configurable Switching Frequency
  • Evaluates the MAX9730 in a 28-Pin TQFN (4mm x 4mm x 0.8mm) Package
  • MAX9730 IC Available in a 20-Bump UCSP (2mm x 2.5mm) Package
  • Fully Assembled and Tested

Product Detail

The MAX9730 evaluation kit (EV kit) is a fully assembled and tested PCB that uses the MAX9730 Class G power amplifier to drive a bridge-tied-load (BTL) speaker in portable audio applications. Designed to operate from a 2.7V to 5.5VDC power supply, the EV kit accepts a single-ended or differential input signal. The EV kit provides a fully differential output capable of delivering 2.4W into an 8Ω speaker.

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