National Semiconductor LM4891MM
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | Dhs. 2.14 | Dhs. 2.14 |
| 15+ | Dhs. 2.07 | Dhs. 31.05 |
| 25+ | Dhs. 2.03 | Dhs. 50.75 |
| 50+ | Dhs. 1.91 | Dhs. 95.50 |
| 100+ | Dhs. 1.69 | Dhs. 169.00 |
| N+ | Dhs. 0.34 | 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 | 1W 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-VSSOP |
| Package / Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) |
This mono Class AB amplifier delivers 1W into 8Ω loads, operating from a 2.2V to 5.5V supply. Its Depop technology eliminates audible clicks during power transitions, while thermal protection ensures safe operation. The compact 8-VSSOP package is ideal for space-constrained designs. Typical applications include portable speakers, radios, intercoms, and alarm systems.
- Depop Technology: Eliminates power-up and shutdown clicks for a seamless user experience.
- Thermal Protection: Prevents overheating, ensuring reliable long-term operation.
- Wide Voltage Range: 2.2V to 5.5V supports various battery chemistries.
- Compact Package: 8-VSSOP saves board space in portable designs.
Portable Bluetooth Speakers (Mono)
The LM4891MM delivers 1W into 8Ω, making it a cost-effective solution for compact mono speakers with Depop for click-free startup.
AM/FM Radios
Its low voltage operation and thermal protection ensure reliable audio output in portable radios, even in warm environments.
Intercom Systems
The amplifier's shutdown mode and small package make it suitable for battery-powered intercoms requiring low standby power.
Alarm Drivers
With 1W output and thermal protection, it can drive alarm speakers in security systems, preventing overheating during prolonged use.
DIY Audio Projects
Hobbyists can use the LM4891MM for building simple mono amplifiers with minimal external components, benefiting from its Depop feature.
Battery-Powered Toys
Its wide voltage range and low cost make it ideal for talking toys and sound modules.
| Model | Package | Voltage Range | Output Power (Typical) |
|---|---|---|---|
| LM4891MM | 8-VSSOP | 2.2V ~ 5.5V | 1W x 1 @ 8Ω |
| MAX9700AEBC-T | 10-UCSP | 2.5V ~ 5.5V | 1.6W x 1 @ 6Ω |
| TPA4411RTJR | 20-QFN (4x4) | 1.8V ~ 4.5V | 100mW x 2 @ 16Ω |
- Q: What is the output power of the LM4891MM?
- A: It delivers 1W into an 8Ω load, suitable for mono speaker applications.
- Q: What is the supply voltage range?
- A: It operates from 2.2V to 5.5V, compatible with battery-powered devices.
- Q: Does it include pop suppression?
- A: Yes, it features Depop circuitry to minimize audible clicks during power-up and shutdown.
- Q: What protection features are built in?
- A: It includes shutdown and thermal protection for safe operation.
- Q: What package is available?
- A: It comes in an 8-VSSOP package (also 8-TSSOP, 8-MSOP).
LM4891MM.pdf
- Q: What is the output power of the LM4891MM?
- A: It delivers 1W into an 8Ω load, suitable for mono speaker applications.
- Q: What is the supply voltage range?
- A: It operates from 2.2V to 5.5V, compatible with battery-powered devices.
- Q: Does it include pop suppression?
- A: Yes, it features Depop circuitry to minimize audible clicks during power-up and shutdown.
- Q: What protection features are built in?
- A: It includes shutdown and thermal protection for safe operation.
- Q: What package is available?
- A: It comes in an 8-VSSOP package (also 8-TSSOP, 8-MSOP).
