National Semiconductor LM4871MX
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | Dhs. 2.32 | Dhs. 2.32 |
| 15+ | Dhs. 2.24 | Dhs. 33.60 |
| 25+ | Dhs. 2.20 | Dhs. 55.00 |
| 50+ | Dhs. 2.07 | Dhs. 103.50 |
| 100+ | Dhs. 1.83 | Dhs. 183.00 |
| N+ | Dhs. 0.37 | 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 | 3W x 1 @ 3Ohm |
| Voltage - Supply | 2V ~ 5.5V |
| Features | Shutdown, Thermal Protection |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Supplier Device Package | 8-SOIC |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| ROHS |  |
The LM4871MX is a mono Class AB audio amplifier designed to deliver up to 3W of continuous output power into a 3Ω load. Operating from a supply voltage as low as 2V up to 5.5V, it is optimized for battery-powered portable devices. Key features include a shutdown mode for power conservation and integrated thermal protection for safe operation. Its compact 8-SOIC package makes it easy to integrate into space-constrained designs such as portable speakers, radios, and intercoms.
- High Output Power: Delivers up to 3W into 3Ω, ensuring loud and clear audio for portable applications.
- Wide Supply Voltage Range: Operates from 2V to 5.5V, compatible with single-cell lithium batteries and USB power.
- Integrated Protection: Thermal shutdown prevents damage from overheating, enhancing reliability.
- Low External Component Count: Requires minimal external parts, simplifying design and reducing BOM cost.
- Compact Package: 8-SOIC surface-mount package saves board space for compact devices.
Portable Bluetooth Speaker
The LM4871MX delivers up to 3W into a 3Ω speaker, providing clear and loud audio for compact Bluetooth speakers. Its wide 2V to 5.5V supply range allows direct operation from a single lithium-ion battery.
AM/FM Radio
With low distortion and a simple external component count, the LM4871MX is ideal for driving the speaker in AM/FM radios, ensuring high-quality audio output from the demodulated signal.
Intercom System
The shutdown feature enables power saving when the intercom is idle, while the 3W output ensures clear voice communication in both residential and commercial intercoms.
Alarm Driver
The LM4871MX can drive a high-power alarm speaker directly from a low-voltage control circuit, providing loud alerts with thermal protection for reliable operation.
DIY Audio Projects
Hobbyists can easily integrate the LM4871MX into custom audio amplifiers due to its minimal external components and surface-mount 8-SOIC package, perfect for small form factor designs.
Line Driver for Audio Signals
As a mono amplifier, it can be used as a line driver to boost audio signals for longer cable runs in consumer electronics, maintaining signal integrity with low noise.
| Model | Package | Voltage Range | Output Power (Typical) |
|---|---|---|---|
| LM4871MX | 8-SOIC | 2V ~ 5.5V | 3W x 1 @ 3Ω |
| LM386 | 8-DIP | 4V ~ 12V | 0.5W x 1 @ 8Ω |
| LM4863 | 16-SOIC | 2.7V ~ 5.5V | 2.2W x 2 @ 4Ω |
- Q: What is the maximum output power of the LM4871MX?
- A: The LM4871MX can deliver up to 3W into a 3Ω load at 5V supply.
- Q: What is the supply voltage range?
- A: It operates from 2V to 5.5V, making it ideal for battery-powered devices.
- Q: Does the LM4871MX have thermal protection?
- A: Yes, it includes thermal shutdown protection to prevent damage from overheating.
- Q: What is the amplifier class?
- A: It is a Class AB amplifier, offering low distortion and good efficiency.
- Q: Can I use this IC in portable speakers?
- A: Yes, its low voltage operation and high output power make it suitable for portable Bluetooth speakers and other battery-powered audio devices.
LM4871MX.pdf
- Q: What is the maximum output power of the LM4871MX?
- A: The LM4871MX can deliver up to 3W into a 3Ω load at 5V supply.
- Q: What is the supply voltage range?
- A: It operates from 2V to 5.5V, making it ideal for battery-powered devices.
- Q: Does the LM4871MX have thermal protection?
- A: Yes, it includes thermal shutdown protection to prevent damage from overheating.
- Q: What is the amplifier class?
- A: It is a Class AB amplifier, offering low distortion and good efficiency.
- Q: Can I use this IC in portable speakers?
- A: Yes, its low voltage operation and high output power make it suitable for portable Bluetooth speakers and other battery-powered audio devices.
