LM35C铗-40漕+110? [ETC]

2.5W Audio Power Amplifier(235.36 k) ; 2.5W音频功率放大器（ 235.36 K）\n


型号：	LM35C铗-40漕+110?
厂家：	ETC
描述：	2.5W Audio Power Amplifier(235.36 k) 2.5W音频功率放大器（ 235.36 K）\n 放大器功率放大器
文件：	总8页 (文件大小：239K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

August 2000

LM380

2.5W Audio Power Amplifier

A selected part for more power on higher supply voltages is

available as the LM384. For more information see AN-69.

General Description

The LM380 is a power audio amplifier for consumer applica-

tions. In order to hold system cost to a minimum, gain is in-

ternally fixed at 34 dB. A unique input stage allows ground

referenced input signals. The output automatically

self-centers to one-half the supply voltage.

Features

n Wide supply voltage range: 10V-22V

n Low quiescent power drain: 0.13W (V_S= 18V)

n Voltage gain fixed at 50

n High peak current capability: 1.3A

n Input referenced to GND

n High input impedance: 150kΩ

n Low distortion

The output is short circuit proof with internal thermal limiting.

The package outline is standard dual-in-line. The LM380N

uses a copper lead frame. The center three pins on either

side comprise a heat sink. This makes the device easy to

use in standard PC layouts.

Uses include simple phonograph amplifiers, intercoms, line

drivers, teaching machine outputs, alarms, ultrasonic driv-

ers, TV sound systems, AM-FM radio, small servo drivers,

power converters, etc.

n Quiescent output voltage is at one-half of the supply

voltage

n Standard dual-in-line package

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

DS006977-2

DS006977-1

Order Number LM380N-8

See NS Package Number N08E

Order Number LM380N

See NS Package Number N14A

DS006977

www.national.com

Block and Schematic Diagrams

LM380N

LM380N-8

DS006977-4

DS006977-3

DS006977-5

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Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Operating Temperature

Junction Temperature

Lead Temperature (Soldering, 10 sec.)

ESD rating to be determined

Thermal Resistance

θ_JC(14-Pin DIP)

0˚C to +70˚C

+150˚C

+260˚C

Supply Voltage

22V

1.3A

30˚C/W

37˚C/W

79˚C/W

107˚C/W

Peak Current

θ_JC(8-Pin DIP)

Package Dissipation 14-Pin DIP (Note 7)

Package Dissipation 8-Pin DIP (Note 7)

Input Voltage

8.3W

1.67W

θ_JA(14-Pin DIP)

θ_JA(8-Pin DIP)

0.5V

−65˚C to +150˚C

Storage Temperature

Electrical Characteristics (Note 2)

Symbol

P_OUT(RMS)

A_V

Parameter

Conditions

Min

2.5

Typ

Max

Units

Output Power

R_L= 8Ω, THD = 3% (Notes 4, 5)

Gain

V/V

V_p-p

Ω

V_OUT

Z_IN

Output Voltage Swing

Input Resistance

R_L= 8Ω

150k

0.2

THD

PSRR

V_S

Total Harmonic Distortion

Power Supply Rejection Ratio

Supply Voltage

(Notes 5, 6)

(Note 3)

Bandwidth

P_OUT= 2W, R_L= 8Ω

100k

I_Q

Quiescent Supply Current

Quiescent Output Voltage

Bias Current

V_OUTQ

I_BIAS

I_SC

9.0

100

1.3

Inputs Floating

Short Circuit Current

Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is

functional, but do not guarantee specific performance limits.

Note 2: V = 18V and T = 25˚C unless otherwise specified.

Note 3: Rejection ratio referred to the output with C

= 5 µF.

BYPASS

Note 4: With device Pins 3, 4, 5, 10, 11, 12 soldered into a 1/16" epoxy glass board with 2 ounce copper foil with a minimum surface of 6 square inches.

Note 5: C = 0.47 µfd on Pin 1.

BYPASS

Note 6: The maximum junction temperature of the LM380 is 150˚C.

Note 7: The package is to be derated at 15˚C/W junction to heat sink pins for 14-pin pkg; 75˚C/W for 8-pin.

www.national.com

Heat Sink Dimensions

DS006977-6

Staver Heat Sink #V-7

Staver Company

41 Saxon Ave.

P.O. Drawer H

Bayshore, NY 11706

Tel: (516) 666-8000

Copper Wings

2 Required

Soldered to

Pins 3, 4, 5,

10, 11, 12

Thickness 0.04

Inches

Typical Performance Characteristics

Maximum Device Dissipation vs

Ambient Temperature

DS006977-12

Device Dissipation vs Output

Power—4Ω Load

Device Dissipation vs Output

Power—8Ω Load

Device Dissipation vs Output

Power—16Ω Load

DS006977-13

DS006977-14

DS006977-15

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Typical Performance Characteristics (Continued)

Power Supply Current vs

Supply Voltage

Total Harmonic Distortion

vs Frequency

Output Voltage Gain and

Phase vs Frequency

DS006977-16

DS006977-18

DS006977-17

Total Harmonic Distortion

vs Output Power

Device Dissipation vs

Output Power

Supply Decoupling vs

Frequency

DS006977-19

DS006977-20

DS006977-21

Typical Applications

Phono Amplifier

DS006977-8

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Typical Applications (Continued)

Bridge Amplifier

DS006977-9

Intercom

DS006977-10

Phase Shift Oscillator

DS006977-11

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Physical Dimensions inches (millimeters) unless otherwise noted

Molded Dual-In-Line Package (N)

Order Number LM380N-8

NS Package Number N08E

Molded Dual-In-Line Package (N)

Order Number LM380N

NS Package Number N14A

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Notes

LIFE SUPPORT POLICY

NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT

DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL

COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:

1. Life support devices or systems are devices or

systems which, (a) are intended for surgical implant

into the body, or (b) support or sustain life, and

whose failure to perform when properly used in

accordance with instructions for use provided in the

labeling, can be reasonably expected to result in a

significant injury to the user.

2. A critical component is any component of a life

support device or system whose failure to perform

can be reasonably expected to cause the failure of

the life support device or system, or to affect its

safety or effectiveness.

National Semiconductor

Corporation

Americas

Tel: 1-800-272-9959

Fax: 1-800-737-7018

Email: support@nsc.com

National Semiconductor

Europe

National Semiconductor

Asia Pacific Customer

Response Group

Tel: 65-2544466

Fax: 65-2504466

National Semiconductor

Japan Ltd.

Tel: 81-3-5639-7560

Fax: 81-3-5639-7507

Fax: +49 (0) 180-530 85 86

Email: europe.support@nsc.com

Deutsch Tel: +49 (0) 69 9508 6208

English Tel: +44 (0) 870 24 0 2171

Français Tel: +33 (0) 1 41 91 8790

Email: ap.support@nsc.com

www.national.com

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.

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