M8 ui oe Power Audio LM380

December 1994

LM380 Amplifier General Description The LM380 is a power audio amplifier for consumer applica- A selected part for more power on higher supply voltages is tion In order to hold system cost to a minimum gain is available as the LM384 For more information see AN-69 internally fixed at 34 dB A unique input stage allows inputs to be ground referenced The output is automatically self Features centering to one half the supply voltage • Wide supply voltage range The output is short circuit proof with internal thermal limiting • Low quiescent power drain The package outline is standard dual-in-line A copper lead • Voltage gain fixed at 50 frame is used with the center three pins on either side com- • High peak current capability prising a heat sink This makes the device easy to use in • Input referenced to GND standard p-c layout • High input impedance Uses include simple intercoms line • Low drivers teaching machine outputs alarms ultrasonic driv- ers TV sound systems AM-FM radio small servo drivers • Quiescent output voltage is at one-half of the supply power converters etc voltage • Standard dual-in-line package

Connection Diagrams (Dual-In-Line Packages Top View)

TLH6977–2 Order Number LM380N-8 TLH6977–1 See NS Package Number N08E Order Number LM380N See NS Package Number N14A Block and Schematic Diagrams LM380N

TLH6977–3

LM380N-8

TLH6977–4

TLH6977–5

• 1995 National Semiconductor Corporation TLH6977 RRD-B30M115Printed in U S A Absolute Maximum Ratings If MilitaryAerospace specified devices are required Operating Temperature 0Ctoa70C please contact the National Semiconductor Sales Junction Temperature a150C OfficeDistributors for availability and specifications Lead Temperature (Soldering 10 sec) a260C Supply Voltage 22V ESD rating to be determined Peak Current 13A Thermal Resistance Package Dissipation 14-Pin DIP (Notes 6 and 7) 83W iJC (14-Pin DIP) 30CW Package Dissipation 8-Pin DIP (Notes 6 and 7) 167W iJC (8-Pin DIP) 37CW i Input Voltage g05V JA (14-Pin DIP) 79CW i (8-Pin DIP) 107CW Storage Temperature b65Ctoa150C JA

Electrical Characteristics (Note 1)

Symbol Parameter Conditions Min Typ Max Units e e POUT(RMS) Output Power RL 8X THD 3% (Notes 3 4) 25 W

AV Gain 40 50 60 VV e VOUT Output Voltage Swing RL 8X 14 Vp-p

ZIN Input Resistance 150k X THD Total Harmonic Distortion (Notes 4 5) 02 % PSRR Power Supply Rejection Ratio (Note 2) 38 dB

VS Supply Voltage 10 22 V e e BW Bandwidth POUT 2W RL 8X 100k Hz

IQ Quiescent Supply Current 7 25 mA

VOUTQ Quiescent Output Voltage 8 90 10 V

IBIAS Bias Current Inputs Floating 100 nA

ISC Short Circuit Current 13 A e e Note 1 VS 18V and TA 25C unless otherwise specified e Note 2 Rejection ratio referred to the output with CBYPASS 5 mF Note 3 With device Pins 3 4 5 10 11 12 soldered into a  epoxy glass board with 2 ounce copper foil with a minimum surface of 6 square inches e Note 4 CBYPASS 047 mfd on Pin 1 Note 5 The maximum junction temperature of the LM380 is 150C Note 6 The package is to be derated at 15CW junction to heat sink pins for 14-pin pkg 75CW for 8-pin

Heat Sink Dimensions

Staver Heat Sink V-7 Staver Company 41 Saxon Ave PO Drawer H Bayshore NY 11706 Tel (516) 666-8000 Copper Wings 2 Required Soldered to Pins 3 4 5 10 11 12 Thickness 004 Inches

TLH6977–6

2 Typical Performance Characteristics

Maximum Device Dissipation vs Ambient Temperature

TLH6977–12 Device Dissipation vs Output Device Dissipation vs Output Device Dissipation vs Output Power4X Load Power8X Load Power16X Load

Power Supply Current vs Total Harmonic Distortion Output Voltage Gain and Supply Voltage vs Frequency Phase vs Frequency

Total Harmonic Distortion Device Dissipation vs Supply Decoupling vs vs Output Power Output Power Frequency

TLH6977–7

3 Typical Applications Phono Amplifier

TLH6977–8

Bridge Amplifier

TLH6977–9

Intercom

TLH6977–10

Phase Shift Oscillator

TLH6977–11

4 Physical Dimensions inches (millimeters)

Molded Dual-In-Line Package (N) Order Number LM380N-8 NS Package Number N08E

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