TLH7146

December 1994

LM391 Audio Power Driver

General Description

The LM391 audio power driver is designed to drive external

power transistors in 10 to 100 watt power amplifier designs

High power supply voltage operation and true high fidelity

performance distinguish this IC The LM391 is internally pro-

tected for output faults and thermal overloads circuitry pro-

viding output transistor protection is user programmable

Features

Y

High Supply Voltage

g

50V max

Y

Low Distortion

001%

Y

Low Input Noise

3 mV

Y

High Supply Rejection

90 dB

Y

Gain and Bandwidth Selectable

Y

Dual Slope SOA Protection

Y

Shutdown Pin

Equivalent Schematic and Connection Diagram

TLH7146 – 1

Dual-In-Line Package

TLH7146 – 2

Top View

Order Number LM391N-100

See NS Package Number N16A

C1995 National Semiconductor Corporation

RRD-B30M115Printed in U S A