UTC LM1875

LINEAR INTEGRATED CIRCUIT

1

QW-R107-019,B

20W AUDIO POWER AMPLIFIER

DESCRIPTION

The UTC LM1875 is a monolithic power amplifier offering

very low distortion and high quality performance for

consumer audio applications.

The UTC LM1875 delivers 20 wants into a 4Ω or 8Ω load

on +25V supplies.Using an 8 Ω

load and +30V

supplies,over 30 watts of power may be delivered.The

amplifier is designed to operate with a minimum ofexternal

components.Device overload protection consists of both

internal current limit and thernal shutdown.

The UTC LM1875 design takes advantage of advanced

circuit techniques and processing to achieve extremely low

distortion levels even at high output power levels.Other

outstanding features include high gain,fast slew rate and a

wide power bandwidth,large output voltage swing,high

current capability,and a very wide supply range.The

amplifier is internally compensated and stable for gains of

10 or greater.

FEATURES

*Up to 30 watts output power

*Avo typically 90 dB

*Low distortion: 0.015%,1kHz,20W

*Wide power bandwidth: 70kHz

*Protection for AC and DC short circuits to ground

*Themal protection with parole circuit

*High current capability: 4A

*Wide supply range 16V-60V

*Internal output protection diodes

*94 dB ripple rejection

APPLICATIONS

*High performance audio systems

*Bridge amplifiers

*Stereo phonographs

*Servo amplifiers

*Instrument systems

TO-220B

1

1

TO-220-5

1: +IN

4: Output

5: Vcc