LM1875T 20W Monolithic Audio Power Amplifier TO-220-5 (LM1875T TO-220-5)
The LM1875T is a high-performance monolithic power amplifier that offers very low distortion and high-quality performance for consumer audio applications. It is capable of delivering 20 watts of power into a 4Ω or 8Ω load on ±25V supplies. With an 8Ω load and ±30V supplies, it can deliver over 30 watts of power. The amplifier is designed to operate with a minimum of external components and features a high gain-bandwidth product and a very high slew rate, ensuring excellent audio fidelity.
This IC is primarily used in high-fidelity (Hi-Fi) audio systems, stereo phonographs, and surround-sound systems. It is a legendary component for Arduino electronics projects in India for building high-quality DIY desktop speakers, home theater amplifiers, and portable audio workstations due to its robust protection and superior sound clarity.
Key Features
- Up to 30 watts output power
- Exceptionally low distortion (0.015 percent THD at 1kHz, 20W)
- Internal output protection (short circuit and thermal)
- High current capability (4A peak)
- Wide supply range (16V to 60V)
- Internal output protection diodes
- 94dB ripple rejection
- Standard TO-220-5 package for easy heat sinking
Specifications
- IC Type = Audio Power Amplifier (Class AB)
- Max Output Power = 20W to 30W
- Load Impedance = 4Ω to 8Ω
- Supply Voltage = 16V to 60V (Single) or ±8V to ±30V (Dual)
- Package Type = TO-220-5
- Number of Pins = 5
- Mounting Type = Through-Hole
- Gain Bandwidth Product = 5.5MHz
- Operating Temperature = 0 to 70 degrees Celsius
Interfaces
- PIN 1 (+IN) = Non-Inverting Input
- PIN 2 (-IN) = Inverting Input (Feedback)
- PIN 3 (V-) = Negative Supply Voltage (or Ground)
- PIN 4 (OUT) = Power Amplifier Output
- PIN 5 (V+) = Positive Supply Voltage
- TAB = Connected to PIN 3 (V-)
