| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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7,750 pcs
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7750 pcs | On Request | 1 | On Request | On Request | 07+ | On Request | On Request |
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The LM4991LDX from Texas Instruments is a mono, Class-AB audio power amplifier designed for various audio applications. It delivers up to 3W of continuous average power into a 3Ω load when powered by a 5V supply, with a typical THD+N of 0.2% at 1kHz.
This amplifier features an analog input and operates within a wide supply voltage range of 2.2V to 5.5V. It includes an ultra-low current shutdown mode, consuming only 0.1µA typically, making it suitable for portable and battery-powered devices. The device also boasts improved click and pop circuitry to minimize noise during turn-on and turn-off transitions.
Available in space-saving SOIC (D) and WSON (NGN) packages, the LM4991LDX is designed for surface mounting. Its architecture eliminates the need for external output coupling capacitors, snubber networks, bootstrap capacitors, or gain-setting resistors, simplifying board design. The amplifier is unity-gain stable and offers improved PSRR of 64 dB at 217kHz and 1kHz.
Key specifications include a minimum load of 3Ω, a maximum power stage supply of 5.5V, and an operating temperature range of -40°C to 85°C. It can drive capacitive loads up to 500pF.
| Qty | Low | High |
|---|---|---|
| 1+ | $2.21 | $2.21 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The LM4991LDX can deliver 3W of continuous average power into a 3Ω load with less than 10% THD when powered by a 5V supply.
The analog supply voltage range is from 2.2V to 5.5V.
The minimum load impedance is 3Ω.
The operating temperature range is -40°C to 85°C.
The shutdown current is typically 0.1µA.
The LM4991LDX is available in SOIC (D) and WSON (NGN) packages.