National Semiconductor LM4905LD
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | Dhs. 355,911.72 | Dhs. 355,911.72 |
| 15+ | Dhs. 344,672.41 | Dhs. 5,170,086.15 |
| 25+ | Dhs. 337,179.53 | Dhs. 8,429,488.25 |
| 50+ | Dhs. 318,447.33 | Dhs. 15,922,366.50 |
| 100+ | Dhs. 280,982.94 | Dhs. 28,098,294.00 |
| N+ | Dhs. 56,196.59 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | National Semiconductor |
| Product Series | Boomer® |
| Packaging | | |
| Part Status | Active |
| Type | Class AB |
| Output Type | 1-Channel (Mono) |
| Max Output Power x Channels @ Load | 1.07W x 1 @ 8Ohm |
| Voltage - Supply | 2.2V ~ 5.5V |
| Features | Depop, Shutdown, Thermal Protection |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Supplier Device Package | 8-WSON (3x3) |
| Package / Case | 8-WFDFN Exposed Pad |
The LM4905LD is a mono Class AB audio amplifier from National Semiconductor, designed for low-power audio applications. Operating from 2.2V to 5.5V, it delivers 1.07W into an 8Ω load. Features include depop circuitry to eliminate turn-on noise, shutdown mode for power saving, and thermal protection. Housed in a compact 8-WSON package, it is ideal for portable radios, intercoms, and DIY audio projects.
- Low Supply Voltage Operation: 2.2V to 5.5V allows use with single-cell batteries and low-voltage systems.
- Depop Circuitry: Eliminates audible pops during power-up for a clean audio experience.
- Thermal Protection: Prevents damage from overheating, ensuring long-term reliability.
- Compact Package: 8-WSON (3x3mm) saves board space in portable designs.
Portable Bluetooth Speaker
The LM4905LD is ideal for small Bluetooth speakers, delivering 1.07W into 8Ω with low supply voltage, enabling clear audio from battery-powered devices.
AM/FM Radio
In portable radios, this amplifier provides sufficient power for headphone or small speaker output, with depop circuitry eliminating clicks during power-up.
Intercom System
Its shutdown mode and thermal protection make the LM4905LD reliable for intercoms, ensuring safe operation in continuous use scenarios.
Line Driver
The amplifier can be used as a line driver for audio signals, providing clean amplification for consumer electronics like set-top boxes.
Alarm Driver
With thermal protection, the LM4905LD is suitable for driving alarm speakers in security systems, delivering consistent output under stress.
DIY Audio Project
Hobbyists can use the LM4905LD in simple audio projects due to its easy-to-use 8-pin package and minimal external component requirements.
| Model | Package | Voltage Range | Output Power (Typical) |
|---|---|---|---|
| LM4905LD | 8-WSON (3x3) | 2.2V ~ 5.5V | 1.07W @ 8Ω |
| LM4861 | 8-SOIC | 2.7V ~ 5.5V | 1.5W @ 8Ω |
| LM4890 | 8-MSOP | 2.2V ~ 5.5V | 1W @ 8Ω |
- Q: What is the supply voltage range for the LM4905LD?
- A: It operates from 2.2V to 5.5V.
- Q: What is the output power of the LM4905LD?
- A: It delivers 1.07W into an 8Ω load.
- Q: What amplifier class is the LM4905LD?
- A: It is a Class AB amplifier.
- Q: Is this a mono or stereo amplifier?
- A: It is a mono (1-channel) amplifier.
- Q: What features does the LM4905LD include?
- A: It includes depop circuitry, shutdown mode, and thermal protection.
- Q: What package does the LM4905LD come in?
- A: It is available in an 8-WSON (3x3mm) package.
LM4905LD.pdf
- Q: What is the supply voltage range for the LM4905LD?
- A: It operates from 2.2V to 5.5V.
- Q: What is the output power of the LM4905LD?
- A: It delivers 1.07W into an 8Ω load.
- Q: What amplifier class is the LM4905LD?
- A: It is a Class AB amplifier.
- Q: Is this a mono or stereo amplifier?
- A: It is a mono (1-channel) amplifier.
- Q: What features does the LM4905LD include?
- A: It includes depop circuitry, shutdown mode, and thermal protection.
- Q: What package does the LM4905LD come in?
- A: It is available in an 8-WSON (3x3mm) package.
