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- Model
- LM4890
- Industry
- Industrial
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- Last added
- 2012-05-09
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National Semiconductor LM4890 Audio Power Amplifier Datasheet
The LM4890 Boomer® audio power amplifier is designed for demanding mobile phone and portable communication device applications. It delivers 1 W continuous average power into an 8 Ω BTL load with less than 1 % THD+N from a 5 V supply and operates from 2.2 V to 5.5 V. The device is unity‑gain stable, can be externally gain‑set, and includes pop‑and‑click circuitry to eliminate turn‑on/off noise.
Key features include an ultra‑low‑current shutdown mode (0.1 pA typical), internal thermal shutdown protection, no need for output coupling or bootstrap capacitors, and compatibility with space‑saving packages such as micro‑SMD, MSOP, SOIC, and LLP. Typical applications are mobile phones, PDAs, and other portable electronic devices.
National Semiconductor LM4890 specifications
| Output Power (5 V, 1 % THD) | 1 W |
|---|---|
| Output Power (3.3 V, 1 % THD) | 400 mW |
| Shutdown Current | 0.1 pA (typ.) |
| Supply Voltage Range | 2.2 V – 5.5 V |
Source: National Semiconductor LM4890 Audio Power Amplifier Datasheet
All National Semiconductor LM4890 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the shutdown current of the LM4890?
The LM4890 has a typical shutdown current of 0.1 pA.
From: National Semiconductor LM4890 Audio Power Amplifier Datasheet
What supply voltage range does the LM4890 operate in?
It operates from 2.2 V up to 5.5 V.
From: National Semiconductor LM4890 Audio Power Amplifier Datasheet
What is the shutdown current of the LM4890?
The LM4890 has a typical shutdown current of 0.1 pA.
From: National Semiconductor LM4890 Audio Power Amplifier Datasheet
What supply voltage range does the LM4890 support?
It operates from 2.2 V up to 5.5 V.
From: National Semiconductor LM4890 Audio Power Amplifier Datasheet