Datasheet

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LM380

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SNAS546C –DECEMBER 1994–REVISED APRIL 2013

LM380 2.5W Audio Power Amplifier

Check for Samples: LM380

FEATURES

DESCRIPTION

The LM380 is a power audio amplifier for consumer

• Wide Supply Voltage Range: 10V-22V

applications. In order to hold system cost to a

• Low Quiescent Power Drain: 0.13W (V

= 18V)

minimum, gain is internally fixed at 34 dB. A unique

• Voltage Gain Fixed at 50

input stage allows ground referenced input signals.

The output automatically self-centers to one-half the

• High Peak Current Capability: 1.3A

supply voltage.

• Input Referenced to GND

The output is short circuit proof with internal thermal

• High Input Impedance: 150kΩ

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

• Low Distortion

The LM380N uses a copper lead frame. The center

• Quiescent Output Voltage is at One-Half of the

three pins on either side comprise a heat sink. This

Supply Voltage

makes the device easy to use in standard PC layouts.

• Standard Dual-In-Line Package

Uses include simple phonograph amplifiers,

intercoms, line drivers, teaching machine outputs,

alarms, ultrasonic drivers, TV sound systems, AM-FM

radio, small servo drivers, power converters, etc.

A selected part for more power on higher supply

voltages is available as the LM384. For more

information see SNAA086.

Connection Diagrams

(Dual-In-Line Packages, Top View)

Figure 1. 14-Pin PDIP Figure 2. 8-Pin PDIP

See NFF0014A Package See P Package

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (14 pages)

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LM380 www.ti.com SNAS546C – DECEMBER 1994 – REVISED APRIL 2013 LM380 2.5W Audio Power Amplifier Check for Samples: LM380 FEATURES DESCRIPTION • • • • • • • • The LM380 is a power audio amplifier for consumer applications. In order to hold system cost to a minimum, gain is internally fixed at 34 dB. A unique input stage allows ground referenced input signals. The output automatically self-centers to one-half the supply voltage. 1 • Wide Supply Voltage Range: 10V-22V Low Quiescent Power Drain: 0.
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LM380 SNAS546C – DECEMBER 1994 – REVISED APRIL 2013 www.ti.com Block and Schematic Diagrams Figure 3. 14-Pin PDIP Figure 4. 8-Pin PDIP Figure 5.
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LM380 www.ti.com SNAS546C – DECEMBER 1994 – REVISED APRIL 2013 These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. Absolute Maximum Ratings (1) (2) Supply Voltage 22V Peak Current 1.3A 14-Pin PDIP (3) Package Dissipation 8-Pin PDIP 8.3W (3) 1.67W Input Voltage ±0.
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LM380 SNAS546C – DECEMBER 1994 – REVISED APRIL 2013 www.ti.com Heat Sink Dimensions 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.
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LM380 www.ti.com SNAS546C – DECEMBER 1994 – REVISED APRIL 2013 Typical Performance Characteristics Maximum Device Dissipation vs Ambient Temperature Device Dissipation vs Output Power—4Ω Load Figure 6. Figure 7. Device Dissipation vs Output Power—8Ω Load Device Dissipation vsOutput Power—16Ω Load Figure 8. Figure 9. Power Supply Current vs Supply Voltage Total Harmonic Distortion vs Frequency Figure 10. Figure 11.
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LM380 SNAS546C – DECEMBER 1994 – REVISED APRIL 2013 www.ti.com Typical Performance Characteristics (continued) 6 Output Voltage Gain and Phase vs Frequency Total Harmonic Distortion vs Output Power Figure 12. Figure 13. Device Dissipation vs Output Power Supply Decoupling vs Frequency Figure 14. Figure 15.
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LM380 www.ti.com SNAS546C – DECEMBER 1994 – REVISED APRIL 2013 Typical Applications Figure 16. Phono Amplifier Figure 17. Bridge Amplifier Figure 18.
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LM380 SNAS546C – DECEMBER 1994 – REVISED APRIL 2013 www.ti.com Figure 19.
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LM380 www.ti.com SNAS546C – DECEMBER 1994 – REVISED APRIL 2013 REVISION HISTORY Changes from Revision B (April 2013) to Revision C • Page Changed layout of National Data Sheet to TI format ............................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 16-Oct-2015 In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
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MECHANICAL DATA NFF0014A N0014A N14A (Rev G) www.ti.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.