Overview
The LM1875T/LB03 is a monolithic power amplifier designed by Texas Instruments, offering high-quality performance for consumer audio applications. This 20-watt audio power amplifier is known for its very low distortion levels and high gain, making it suitable for a variety of audio systems. The device is packaged in a TO-220-5 plastic power package, which is widely used in power electronics due to its thermal dissipation capabilities.
Key Specifications
| Parameter | Conditions | Typical | Tested Limits | Units |
|---|---|---|---|---|
| Supply Voltage | 60V | V | ||
| Input Voltage | −VEE to VCC | V | ||
| Storage Temperature | −65°C to +150°C | °C | ||
| Junction Temperature | 150°C | °C | ||
| Lead Temperature (Soldering, 10 seconds) | 260°C | °C | ||
| Output Power (THD=1%) | VCC=+25V, −VEE=−25V, RL=8Ω | 25W | W | |
| THD (Total Harmonic Distortion) | POUT=20W, fo=1 kHz | 0.015% | % | |
| Gain-Bandwidth Product | fo=20 kHz | 5.5 MHz | MHz | |
| Open Loop Gain | DC | 90 dB | dB | |
| Max Slew Rate | 20W, 8Ω, 70 kHz BW | 8 V/μs | V/μs | |
| Current Limit | VOUT = VSUPPLY −10V | 4 A | A |
Key Features
- Up to 30 watts output power with ±30V supplies and an 8Ω load.
- Very low distortion: 0.015% at 1 kHz, 20 W into an 8Ω load.
- Wide power bandwidth: 70 kHz.
- Protection for AC and DC short circuits to ground and thermal protection with parole circuit.
- High current capability: 4A.
- Wide supply range: 16V-60V.
- Internal output protection diodes.
- High ripple rejection: 94 dB.
- Internally compensated and stable for gains of 10 or greater.
Applications
- High-performance audio systems.
- Bridge amplifiers.
- Stereo phonographs.
- Servo amplifiers.
- Instrument systems.
Q & A
- What is the maximum output power of the LM1875T/LB03?
The LM1875T/LB03 can deliver up to 20 watts into a 4Ω or 8Ω load on ±25V supplies, and over 30 watts with ±30V supplies and an 8Ω load.
- What is the typical distortion level of the LM1875T/LB03?
The typical distortion level is 0.015% at 1 kHz, 20 W into an 8Ω load.
- What is the power bandwidth of the LM1875T/LB03?
The power bandwidth is 70 kHz.
- Does the LM1875T/LB03 have built-in protection features?
- What is the maximum current capability of the LM1875T/LB03?
The maximum current capability is 4A.
- What is the supply voltage range for the LM1875T/LB03?
The supply voltage range is 16V-60V.
- Is the LM1875T/LB03 internally compensated?
- What type of package does the LM1875T/LB03 come in?
- What are some typical applications of the LM1875T/LB03?
- How does the thermal protection work in the LM1875T/LB03?
