Integrated Circuits by UTC | LM1875L Power Amplifier IC

The UTC LM1875L is a monolithic power amplifier designed for high-quality consumer audio applications. Delivering up to 30W output power with ultra-low distortion (0.015% at 1kHz, 20W), it ensures clear and dynamic audio reproduction. With a wide power bandwidth of 70kHz and a high open-loop gain (Avo) of 90dB, the LM1875L is well-suited for precision audio performance.

Built-in thermal protection, short-circuit protection, and internal output diodes enhance reliability. Its high current capability (4A) and wide supply range (16V–60V) make it versatile across audio, instrumentation, and servo applications.

Key Features

• Up to 30W output power

• Low distortion: 0.015% at 1kHz, 20W

• Wide power bandwidth: 70kHz

• High gain: Avo ≈ 90dB

• High current capability: 4A

• Supply voltage range: 16V – 60V

• Ripple rejection: 94dB

• Built-in protection: AC/DC short-circuit, thermal shutdown, output protection diodes

Applications

• High-performance audio systems

• Bridge amplifiers

• Stereo phonographs

• Servo amplifiers

• Instrumentation systems

Other Specifications

• Package Type: TO-220 / DIP (varies by model)

• Delivery Time: Standard lead time available