LM4890MM

• Space-saving packages: micro-SMD, MSOP, SOIC, and law firms
• Ultra-low current shutdown mode
• The BTL output can drive capacitive loads
• Improved POP and click circuitry eliminate on-noise and shut-off transitions
• 2.2 - 5.5V operation
• No output coupling capacitors are required to buffer the network or bootstrap capacitors
• Thermal shutdown protection
• Unit gain is stable
• External gain configuration capabilities

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The LM4890 is an audio power amplifier designed primarily for demanding applications in mobile phones and other portable communication device applications. It is capable of providing 1 watt of continuous power for 8 watts BTL load distortion is less than 1% from a 5V DC supply (THD+N).

Boomer audio power amplifiers are designed to provide high quality output power with a small amount of external components. The LM4890 does not require output coupling capacitors or starter capacitors, making it ideal for mobile phones and other low-voltage applications where minimal power consumption is a major requirement.

The LM4890 features a low-power shutdown mode, which is enabled by the low shutdown pin of the driving logic. In addition, the LM4890 has an internal thermal shutdown protection mechanism.

The LM4890 includes advanced pop and circuitry that eliminates noise from clicking or switching on and off.

The LM4890 is unity gain stable and can be configured via an external gain setting resistor.

Key specifications:

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• mobile phone
• handheld computer
• Portable electronic devices