LM4864MMX National Semiconductor, LM4864MMX Datasheet

LM4864MMX

Manufacturer Part Number

LM4864MMX

Description

IC AMP AUDIO PWR .725W AB 8MSOP

Manufacturer

National Semiconductor

Series

Boomer®r

Type

Class ABr

Datasheets

1.LM4864MMX.pdf (18 pages)

2.LM4864MMX.pdf (15 pages)

3.LM4864MMX.pdf (20 pages)

Specifications of LM4864MMX

Output Type

1-Channel (Mono)

Max Output Power X Channels @ Load

725mW x 1 @ 8 Ohm

Voltage - Supply

2.7 V ~ 5.5 V

Features

Shutdown, Thermal Protection

Mounting Type

Surface Mount

Package / Case

8-MSOP, Micro8™, 8-uMAX, 8-uSOP,

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

Other names

LM4864MMXTR

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Download datasheet (590Kb)

LM4864

725mW Audio Power Amplifier with Shutdown Mode

General Description

The LM4864 is a bridged audio power amplifier capable of

delivering 725mW of continuous average power into an 8Ω

load with 1% THD+N from a 5V power supply.

Boomer

to provide high quality output power from a low supply volt-

age while requiring a minimal amount of external compo-

nents. Since the LM4864 does not require output coupling

capacitors, bootstrap capacitors or snubber networks, it is

optimally suited for low-power portable applications.

The LM4864 features an externally controlled, low power

consumption shutdown mode, and thermal shutdown protec-

tion.

The closed loop response of the unity-gain stable LM4864

can be configured by external gain-setting resistors. The

device is available in multiple package types to suit various

applications.

Key Specifications

Typical Application

Boomer

LM4864LD, 4Ω load

LM4864LD, 8Ω load

at 1% THD+N with V

is a registered trademark of National Semiconductor Corporation.

audio power amplifiers were designed specifically

= 5V, 1kHz

FIGURE 1. Typical Audio Amplifier Application Circuit

DS012607

625mW (typ)

725mW (typ)

* Not recommended for new designs. Contact NSC Audio

Marketing.

Features

n MSOP, SOP, DIP

n No output coupling capacitors, bootstrap capacitors, or

n Thermal shutdown protection circuitry

n Unity-gain stable

n External gain configuration capability

* Not recommended for new designs. Contact NSC Audio

Marketing.

Applications

n Cellular phones

n Personal computers

n General purpose audio

snubber circuits are necessary

LM4864M & LM4864N

LM4864MM, 8Ω load (Note 10)

LM4864, 16Ω load

Shutdown current

, and LD packaging

, 8Ω load

01260701

September 2004

675mW (typ)

300mW (typ)

550mW (typ)

www.national.com

0.7µA (typ)

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