LM388N-1 National Semiconductor, LM388N-1 Datasheet

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LM388N-1

Manufacturer Part Number
LM388N-1
Description
IC AMP AUDIO PWR 2.2W MONO 14DIP
Manufacturer
National Semiconductor
Type
Class ABr
Datasheet

Specifications of LM388N-1

Output Type
1-Channel (Mono)
Max Output Power X Channels @ Load
2.2W x 1 @ 8 Ohm
Voltage - Supply
4 V ~ 12 V
Mounting Type
Through Hole
Package / Case
14-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Features
-
Other names
*LM388N-1

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C 1995 National Semiconductor Corporation
LM388 1 5W Audio Power Amplifier
General Description
The LM388 is an audio amplifier designed for use in medium
power consumer applications The gain is internally set to
20 to keep external part count low but the addition of an
external resistor and capacitor between pins 2 and 6 will
increase the gain to any value up to 200
The inputs are ground referenced while the output is auto-
matically biased to one half the supply voltage
Features
Y
Y
Y
Y
Y
Equivalent Schematic and Connection Diagrams
Minimum external parts
Wide supply voltage range
Excellent supply rejection
Ground referenced input
Self-centering output quiescent voltage
TL H 7846
Y
Y
Y
Y
Applications
Y
Y
Y
Y
Y
Y
Y
Y
Y
Variable voltage gain
Low distortion
Fourteen pin dual-in-line package
Low voltage operation 4V
AM-FM radio amplifiers
Portable tape player amplifiers
Intercoms
TV sound systems
Lamp drivers
Line drivers
Ultrasonic drivers
Small servo drivers
Power converters
TL H 7846 – 1
See NS Package Number N14A
Order Number LM388N-1
Dual-In-Line Package
Top View
RRD-B30M115 Printed in U S A
February 1995
TL H 7846 – 2

Related parts for LM388N-1

LM388N-1 Summary of contents

Page 1

... 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 Y Dual-In-Line Package Top View Order Number LM388N-1 See NS Package Number N14A TL H 7846 – 1 RRD-B30M115 Printed February 1995 TL H 7846 – 2 ...

Page 2

... Storage Temperature b Electrical Characteristics T Symbol Parameter V Operating Supply Voltage S LM388 I Quiescent Current Q LM388 P Output Power (Note 2) OUT LM388N-1 A Voltage Gain V BW Bandwidth THD Total Harmonic Distortion PSRR Power Supply Rejection Ratio (Note 3) R Input Resistance IN I Input Bias Current BIAS Note 1 Pins Derate above 25 C case ...

Page 3

Typical Performance Characteristics Peak-to-Peak Output Voltage Swing vs Supply Voltage Distortion vs Output Power Application Hints GAIN CONTROL To make the LM388 a more versatile amplifier two pins (2 and 6) are provided for gain control With pins 2 and ...

Page 4

Application Hints (Continued) is open If pins 2 and 6 are bypassed then R as low can be used This restriction is because the amplifier is only compensated for closed-loop gains greater than INPUT ...

Page 5

Typical Applications (Continued) FIGURE 12V e S FIGURE 6a Amplifier with Bass Boost TL H 7846 – 7 FIGURE 4 Ampifier with Gain ...

Page 6

Typical Applications (Continued) Note 1 Twist supply lead and supply ground very tightly Note 2 Twist speaker lead and ground very tightly Note 3 Ferrite bead is Ferroxcube K5-001-001 3B with 3 turns of wire FIGURE 7 Intercom FIGURE 8 ...

Page 7

7 ...

Page 8

... National does not assume any responsibility for use of any circuitry described no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications Molded Dual-In-Line Package (N) Order Number LM388N-1 NS Package Number N14A 2 A critical component is any component of a life ...

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