LM390 Datasheet, PDF (1/6 Pages) National Semiconductor (TI) – LM390 1W Battery Operated Audio Power Amplifier

April 1995
LM390 1W Battery Operated Audio Power Amplifier
General Description
The LM390 Power Audio Amplifier is optimized for 6V 7 5V
9V operation into low impedance loads The gain is internal-
ly set at 20 to keep the external part count low but the
addition of an external resistor and capacitor between pins
2 and 6 wil increase the gain to any value up to 200 The
inputs are ground referenced while the output is automati-
cally biased to one half the supply voltage
Features
Y _{Battery operation}
Y _{1W output power}
Y _{Minimum external parts}
Y _{Excellent supply rejection}
Y _{Ground referenced input}
Y _{Self-centering output quiescent voltage}
Y _{Variable voltage gain}
Y _{Low distortion}
Y _{Fourteen pin dual-in-line package}
Applications
Y _{AM-FM radio amplifiers}
Y _{Portable tape player amplifiers}
Y _Intercoms
Y _{TV sound systems}
Y _{Lamp drivers}
Y _{Line drivers}
Y _{Ultrasonic drivers}
Y _{Small servo drivers}
Y _{Power converters}
Equivalent Schematic and Connection Diagrams
Dual-In-Line Package
TL H 7848 – 1
TL H 7848 – 2
Order Number LM390N
See NS Package Number N14A
C1995 National Semiconductor Corporation TL H 7848
RRD-B30M115 Printed in U S A