National Semiconductor LM4850LD
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | Dhs. 1.95 | Dhs. 1.95 |
| 15+ | Dhs. 1.90 | Dhs. 28.50 |
| 25+ | Dhs. 1.85 | Dhs. 46.25 |
| 50+ | Dhs. 1.75 | Dhs. 87.50 |
| 100+ | Dhs. 1.55 | Dhs. 155.00 |
| N+ | Dhs. 0.31 | 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) with Stereo Headphones |
| Max Output Power x Channels @ Load | 1.9W x 1 @ 3Ohm |
| Voltage - Supply | 2.4V ~ 5.5V |
| Features | - |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Supplier Device Package | 14-WSON (4x4) |
| Package / Case | 14-WFDFN Exposed Pad |
The LM4850LD is a mono Class AB audio amplifier designed for portable and battery-powered applications. Operating from 2.4V to 5.5V, it delivers up to 1.9W into a 3Ω load while also featuring a stereo headphone output. Its compact 14-WSON package and wide -40°C to 85°C temperature range make it suitable for space-constrained devices such as Bluetooth speakers, alarms, and gaming accessories. The amplifier offers low distortion and high efficiency, ensuring clear audio reproduction in a variety of consumer electronics.
- Low Voltage Operation: Works from 2.4V to 5.5V, enabling direct battery power from single-cell Li-ion or alkaline sources.
- Integrated Stereo Headphone Output: Provides both mono speaker drive and headphone listening in one chip, reducing BOM count.
- High Output Power: Delivers 1.9W into 3Ω, sufficient for clear audio in portable speakers and alarms.
- Wide Temperature Range: Rated for -40°C to 85°C, ensuring reliable performance in extreme environments.
- Compact Package: The 14-WSON (4x4mm) footprint saves PCB space for miniaturized designs.
Portable Bluetooth Speaker
The LM4850LD's low 2.4V minimum supply voltage and 1.9W output into 3Ω make it perfect for compact Bluetooth speakers, delivering clear audio from a single Li-ion cell.
Smartphone Accessory Amplifier
With its small 14-WSON package and integrated headphone driver, the LM4850LD can be used in dongles or cases to boost audio output for external speakers while driving headphones.
Battery-Powered Alarm System
The wide operating temperature range and low power consumption suit the LM4850LD for security alarms or buzzer drivers that must operate reliably in harsh environments.
Portable Gaming Console Audio
Its mono output with stereo headphone capability allows the LM4850LD to drive a built-in speaker and provide private listening in handheld gaming devices.
Intercom System
The Class AB design ensures low distortion for voice clarity in intercoms, while the 5.5V max supply allows use with standard USB power sources.
| Model | Package | Voltage Range | Output Power (Typical) |
|---|---|---|---|
| LM4850LD | 14-WSON (4x4) | 2.4V ~ 5.5V | 1.9W x 1 @ 3Ω |
| LM4851 | 14-WSON | 2.4V ~ 5.5V | 1.9W x 1 @ 3Ω |
| LM4852 | 14-WSON | 2.4V ~ 5.5V | 1.9W x 1 @ 3Ω |
- Q: What is the supply voltage range for the LM4850LD?
- A: The LM4850LD operates from 2.4V to 5.5V, making it ideal for battery-powered devices.
- Q: What output power can the LM4850LD deliver?
- A: It can deliver 1.9W into a 3Ω load in mono mode.
- Q: Does the LM4850LD support stereo headphones?
- A: Yes, it is a mono amplifier with a separate stereo headphone output.
- Q: What is the amplifier class of the LM4850LD?
- A: It is a Class AB amplifier, offering low distortion and good linearity.
- Q: What is the operating temperature range?
- A: The LM4850LD is rated for -40°C to 85°C ambient temperature.
LM4850LD.pdf
- Q: What is the supply voltage range for the LM4850LD?
- A: The LM4850LD operates from 2.4V to 5.5V, making it ideal for battery-powered devices.
- Q: What output power can the LM4850LD deliver?
- A: It can deliver 1.9W into a 3Ω load in mono mode.
- Q: Does the LM4850LD support stereo headphones?
- A: Yes, it is a mono amplifier with a separate stereo headphone output.
- Q: What is the amplifier class of the LM4850LD?
- A: It is a Class AB amplifier, offering low distortion and good linearity.
- Q: What is the operating temperature range?
- A: The LM4850LD is rated for -40°C to 85°C ambient temperature.
