LM4890LD Datasheet

Boomer? Audio Power Amplifier Series 1 Watt Audio Power Amplifier


General Description
The LM4890 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 1 watt of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a 5VDC
power supply.

Key Specifications
PSRR at 217Hz, VDD = 5V (Fig. 1) 62dB(typ.)
Power Output at 5.0V & 1% THD 1W(typ.)
Power Output at 3.3V & 1% THD 400mW(typ.)
Shutdown Current 0.1µA(typ.)

Available in space-saving packages: micro SMD, MSOP, SOIC, and LLP
Ultra low current shutdown mode
BTL output can drive capacitive loads
Improved pop & click circuitry eliminates noises during turn-on and turn-off transitions
2.2 - 5.5V operation
No output coupling capacitors, snubber networks or bootstrap capacitors required
Thermal shutdown protection
Unity-gain stable
External gain configuration capability

Mobile Phones
Portable electronic devices



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Manufacturer information

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