Product Classification
Class AB power amplifier
SC4871

Overview and Characteristics

4871 is a BTL bridge connected audio power amplifier.

It can provide THD less than 10% and average output power of 3W for a 3V load at 5V supply voltage.

The typical value of the current in the closed mode is 0.6uA.

4871 is specially designed to provide high-power, high-fidelity audio output.

It requires only a small number of peripheral components and can operate at low voltage (2.0V-5.5V).

4871 does not require coupling capacitors, bootstrap capacitors or buffer networks, so it is very suitable for low power systems with small volume and low weight.

Main characteristics:

When the distortion is 10% and the input signal is 1KHZ, the output power is 3 ohms, 3W (typical value). 4ohms, 2.5W (typical value). 8ohm and 1.5W (typical value).

Standby Current: 0.6 A

Working voltage: 2.0-5.5V.

The maximum distortion is 0.5% when the input signal frequency is 1KHZ, the load is 8 ohms and the average output power is 1W.

Output does not require coupling capacitors, bootstrap capacitors or buffer circuits.

Small size, using SOP8 package.

The gain is stable.

External configuration can change gain.

Typical application

Laptop computer uuuuuuuuuuuu

Typical Application Diagram and Output Function of Low Voltage Audio System for Desktop Computer

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