LM391 Datasheet | National Semiconductor

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 protected for output faults and thermal overloads circuitry providing output transistor protection is user programmable Features Y Y Y Y Y Y Y High Supply Voltage Low Distortion Low Input Noise High Supply Rejection Gain and Bandwidth Selectable Dual Slope SOA Protection Shutdown Pin g 50V max 0 01% 3 m V 90 d B Equivalent Schematic and Connection Diagram TL H 7146 - 1 Dual-In-Line Package TL H 7146 - 2 Top View Order Number LM391N-100 See NS Package Number N16A C1995 National Semiconductor Corporation TL H 7146 RRD-B30M115 Printed in U S A Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage LM391N-100 Input Voltage Shutdown Current (Pin 14) g 50V or a 100V Package Dissipation (Note 1) Storage Temperature Operating Temperature Lead Temp (Soldering 10 sec ) Thermal Resistance i JC i JA 1 39W b 65 C to a 150 C 0 C to a 70 C 260 C 20 C W 63 C W Supply Voltage less 5V 1 m A Electrical Characteristics TA e 25 C (The following are for V a e 90% V a MAX and Vb e 90% Vb MAX ) Parameter Quiescent Current LM391N-100 Output Swing Drive Current Noise (20 Hz - 20 k Hz) Supply Rejection Total Harmonic Distortion Intermodulation Distortion Open Loop Gain Input Bias Current Input Offset Voltage Positive Current Limit VBE Negative Current Limit VBE Positive Current Limit Bias Current Negative Current Limit Bias Current Pin 10- 9 Pin 9- 13 Pin 10 Pin 13 Conditions Current in Pin 15 VIN e 0 Positive Negative Source (Pin 8) Sink (Pin 5) Input Referred Input Referred f e 1 k Hz f e 20 k Hz 60 Hz 7 k Hz 4 1 f e 1 k Hz 1000 70 Va b 7 Vb a 7 5 5 3 90 0 01 0 10 0 01 5500 01 5 650 650 10 10 100 100 10...