UNISONIC TECHNOLOGIES CO., LTD

LM1875

LINEAR INTEGRATED CIRCUIT

www.unisonic.com.tw

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Copyright © 2005 Unisonic Technologies Co., Ltd

QW-R107-019,D

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. It delivers 20W into a 4Ω or 8Ω load on ±25V supplies.

Using an 8Ω load and +30V supplies, over 30W of power may be

delivered. The amplifier is designed to operate with a minimum of

external components. Device overload protection consists of both

internal current limit and thermal shutdown.

The UTC LM1875 design utilizes 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 30W 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

*Thermal 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

TO-220-5

1

*Pb-free plating product number: LM1875L

ORDERING INFORMATION

Order Number

Pin Assignment

Normal

Lead Free Plating

Package

1

2

3

4

5

Packing

LM1875-TA5-T

LM1875L-TA5-T

TO-220-5

Tube

LM1875-TB5-T

LM1875L-TB5-T

TO-220B

Tube

LM 187 5L -T A5 -T

(1)Packing Type

(2)Package Type

(3)Lead Plating

(1) T: Tube

(2) TA5: TO-220-5, TB5: TO-220B

(3) L: Lead Free Plating, Blank: Pb/Sn