National Semiconductor LM4990LD
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | Dhs. 1.12 | Dhs. 1.12 |
| 15+ | Dhs. 1.10 | Dhs. 16.50 |
| 25+ | Dhs. 1.08 | Dhs. 27.00 |
| 50+ | Dhs. 1.02 | Dhs. 51.00 |
| 100+ | Dhs. 0.90 | Dhs. 90.00 |
| N+ | Dhs. 0.18 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | National Semiconductor |
| Product Series | Boomer® |
| Packaging | Bulk | |
| Part Status | Active |
| Type | Class AB |
| Output Type | 1-Channel (Mono) |
| Max Output Power x Channels @ Load | 2W x 1 @ 4Ohm |
| Voltage - Supply | 2.2V ~ 5.5V |
| Features | - |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Supplier Device Package | 10-WSON (3x4) |
| Package / Case | 10-WFDFN Exposed Pad |
The LM4990LD is a mono Class AB audio amplifier from National Semiconductor, delivering up to 2W into a 4Ω load. Operating from 2.2V to 5.5V, it is optimized for battery-powered devices requiring higher output power. The 10-WSON exposed pad package ensures efficient heat dissipation, making it suitable for portable speakers, GPS units, gaming consoles, and alarm systems. With a wide temperature range and simple external circuitry, this amplifier provides a powerful yet compact audio solution.
- High Output Power: 2W into 4Ω enables louder audio for portable devices.
- Low Voltage Operation: 2.2V minimum supply supports single-cell Li-ion batteries.
- Thermal Efficiency: Exposed pad WSON package improves heat dissipation.
- Wide Temperature Range: -40°C to 85°C ensures reliable performance.
- Compact Size: 3x4mm footprint saves PCB space.
Portable Bluetooth Speaker
The LM4990LD's 2W output into 4Ω provides higher volume for compact Bluetooth speakers, with low 2.2V operation supporting single-cell batteries.
GPS Navigation Device
Its small WSON package and high output power make it ideal for GPS units requiring clear voice prompts in noisy environments.
Portable Gaming Console
The amplifier can drive small speakers in handheld gaming devices, delivering immersive audio with minimal power consumption.
Alarm System Speaker Driver
With 2W output, it can drive alarm speakers for loud warning tones in security systems.
Line Driver for Audio Output
It can boost audio signals from microcontrollers to drive headphones or external speakers in consumer electronics.
DIY High-Power Audio Project
Hobbyists can use the LM4990LD for custom audio projects requiring more power than standard low-voltage amplifiers.
| Model | Package | Voltage Range | Output Power (Typical) |
|---|---|---|---|
| LM4990LD | 10-WSON (3x4) | 2.2V ~ 5.5V | 2W x 1 @ 4Ω |
| LM4864MMX | 8-VSSOP | 2.7V ~ 5.5V | 675mW x 1 @ 8Ω |
| FAN7024MUX | 8-MSOP | 2.3V ~ 5.5V | 675mW x 1 @ 8Ω |
| NCP2809BMUTXG | 10-UDFN (3x3) | 2.2V ~ 5.5V | 135mW x 2 @ 16Ω |
- Q: What is the output power of the LM4990LD?
- A: It delivers 2W into a 4Ω load at 5V supply.
- Q: What is the supply voltage range?
- A: It operates from 2.2V to 5.5V, ideal for battery-powered devices.
- Q: Is the LM4990LD a mono or stereo amplifier?
- A: It is a 1-channel (mono) Class AB amplifier.
- Q: What package is available?
- A: It comes in a 10-WSON (3x4mm) exposed pad package for thermal management.
- Q: What are typical applications?
- A: It is suitable for portable speakers, GPS units, and other devices requiring higher output power.
LM4990LD.pdf
- Q: What is the output power of the LM4990LD?
- A: It delivers 2W into a 4Ω load at 5V supply.
- Q: What is the supply voltage range?
- A: It operates from 2.2V to 5.5V, ideal for battery-powered devices.
- Q: Is the LM4990LD a mono or stereo amplifier?
- A: It is a 1-channel (mono) Class AB amplifier.
- Q: What package is available?
- A: It comes in a 10-WSON (3x4mm) exposed pad package for thermal management.
- Q: What are typical applications?
- A: It is suitable for portable speakers, GPS units, and other devices requiring higher output power.
