LM4880M/NOPB National Semiconductor, LM4880M/NOPB Datasheet

IC AMP AUDIO PWR .325W AB 8SOIC

LM4880M/NOPB

Manufacturer Part Number
LM4880M/NOPB
Description
IC AMP AUDIO PWR .325W AB 8SOIC
Manufacturer
National Semiconductor
Series
Boomer®r
Type
Class ABr
Datasheet

Specifications of LM4880M/NOPB

Output Type
2-Channel (Stereo)
Max Output Power X Channels @ Load
325mW x 2 @ 8 Ohm
Voltage - Supply
2.7 V ~ 5.5 V
Features
Shutdown, Thermal Protection
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Operational Class
Class-AB
Audio Amplifier Output Configuration
2-Channel Stereo
Output Power (typ)
0.325x2@8OhmW
Audio Amplifier Function
Speaker
Total Harmonic Distortion
0.03@8Ohm@200mW%
Single Supply Voltage (typ)
3/5V
Dual Supply Voltage (typ)
Not RequiredV
Power Supply Requirement
Single
Rail/rail I/o Type
No
Power Supply Rejection Ratio
50dB
Single Supply Voltage (min)
2.7V
Single Supply Voltage (max)
5.5V
Dual Supply Voltage (min)
Not RequiredV
Dual Supply Voltage (max)
Not RequiredV
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
8
Package Type
SOIC N
No. Of Channels
2
Output Power
250mW
Supply Voltage Range
2.7V To 5.5V
Load Impedance
8ohm
Operating Temperature Range
-40°C To +85°C
Amplifier Case Style
SOIC
No. Of Pins
8
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
*LM4880M
*LM4880M/NOPB
LM4880M

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM4880M/NOPB
Manufacturer:
NS/国半
Quantity:
20 000
© 2004 National Semiconductor Corporation
LM4880
Dual 250 mW Audio Power Amplifier with Shutdown
Mode
General Description
The LM4880 is a dual audio power amplifier capable of
delivering typically 250mW per channel of continuous aver-
age power to an 8Ω load with 0.1% THD+N using a 5V
power supply.
Boomer audio power amplifiers were designed specifically to
provide high quality output power with a minimal amount of
external components using surface mount packaging.
Since the LM4880 does not require bootstrap capacitors or
snubber networks, it is optimally suited for low-power por-
table systems.
The LM4880 features an externally controlled, low-power
consumption shutdown mode, as well as an internal thermal
shutdown protection mechanism.
The unity-gain stable LM4880 can be configured by external
gain-setting resistors.
Key Specifications
n THD+N at 1kHz at 200mW continuous average output
Connection Diagram
Boomer
power into 8Ω: 0.1% (max)
®
is a registered trademark of National Semiconductor Corporation.
DS012343
See NS Package Number M08A for SO
Order Number LM4880M or LM4880N
or NS Package Number N08E for DIP
Small Outline and
DIP Packages
Top View
n THD+N at 1kHz at 85mW continuous average output
n Output power at 10% THD+N at 1kHz into 8Ω:
n Shutdown current: 0.7µA (typ)
n 2.7V to 5.5V supply voltage range
Features
n No bootstrap capacitors or snubber circuits are
n Small Outline (SO) and DIP packaging
n Unity-gain stable
n External gain configuration capability
Applications
n Headphone Amplifier
n Personal Computers
n CD-ROM Players
power into 32Ω: 0.1% (typ)
325mW (typ)
necessary
01234302
September 2004
www.national.com

Related parts for LM4880M/NOPB

LM4880M/NOPB Summary of contents

Page 1

... THD+N at 1kHz at 200mW continuous average output power into 8Ω: 0.1% (max) Connection Diagram Boomer ® registered trademark of National Semiconductor Corporation. © 2004 National Semiconductor Corporation n THD+N at 1kHz at 85mW continuous average output power into 32Ω: 0.1% (typ) n Output power at 10% THD+N at 1kHz into 8Ω: 325mW (typ) n Shutdown current: 0.7µ ...

Page 2

Typical Application *Refer to the Application Information section for information concerning proper selection of the input and output coupling capacitors. FIGURE 1. Typical Audio Amplifier Application Circuit www.national.com 01234301 2 ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage Storage Temperature Input Voltage Power Dissipation (Note 3) ESD Susceptibility (Note 4) ESD Susceptibility (Note 5) Junction Temperature Soldering Information Small Outline Package Vapor Phase (60 sec ...

Page 4

Automatic Shutdown Circuit Automatic Switching Circuit www.national.com FIGURE 2. Automatic Shutdown Circuit FIGURE 3. Automatic Switching Circuit 4 01234303 01234304 ...

Page 5

External Components Description Components 1. R Inverting input resistance which sets the closed-loop gain in conjunction with R i also forms a high pass filter with Input coupling capacitor which blocks the DC voltage at the amplifier’s ...

Page 6

Typical Performance Characteristics THD + N vs Output Power THD + N vs Frequency THD + N vs Frequency www.national.com (Continued) THD + N vs Output Power 01234309 THD + N vs Frequency 01234311 THD + N vs Frequency 01234313 ...

Page 7

Typical Performance Characteristics Output Power vs Load Resistance Output Power vs Supply Voltage Output Power vs Supply Voltage (Continued) 01234315 01234317 01234319 7 Output Power vs Load Resistance 01234316 Output Power vs Supply Voltage 01234318 Clipping Voltage vs Supply Voltage ...

Page 8

Typical Performance Characteristics Clipping Voltage vs Supply Voltage Channel Separation Noise Floor www.national.com (Continued) 01234321 01234323 01234325 8 Power Dissipation vs Output Power 01234322 Output Attenuation in Shutdown Mode 01234324 Power Supply Rejection Ratio 01234326 ...

Page 9

Typical Performance Characteristics Open Loop Frequency Response Frequency Response vs Output Capacitor Size Frequency Response vs Input Capacitor Size (Continued) 01234327 Frequency Response vs Output Capacitor Size 01234329 Frequency Response 01234331 9 Supply Current vs Supply Voltage 01234328 01234330 Typical ...

Page 10

Typical Performance Characteristics Typical Application Frequency Response Application Information SHUTDOWN FUNCTION In order to reduce power consumption while not in use, the LM4880 contains a shutdown pin to externally turn off the amplifier’s bias circuitry. This shutdown feature turns the ...

Page 11

Application Information switch with one of the output pins. The output of this circuit (the voltage on pin 5 of the LM4880) has two states based on the state of the switch. When the switch is open, signify- ing that ...

Page 12

Application Information ber that the maximum power dissipation value from Equation (1) must be multiplied by two since there are two indepen- dent amplifiers inside the package. Once the power dissipation equations have been addressed, the required gain can be ...

Page 13

Application Information LM4880 MDA MWA DUAL 250 MW AUDIO POWER AMPLIFIER WITH SHUTDOWN MODE Fabrication Attributes Physical Die Identification Die Step Physical Attributes Wafer Diameter Dise Size (Drawn) Thickness Min Pitch Special Assembly Requirements: Note: Actual die size is rounded ...

Page 14

Application Information IN U.S.A Tel #: Fax: IN EUROPE Tel: Fax: IN ASIA PACIFIC Tel: IN JAPAN Tel: www.national.com (Continued) 1 877 Dial Die 1 877 342 5343 1 207 541 6140 49 (0) 8141 351492 / 1495 49 (0) ...

Page 15

Physical Dimensions inches (millimeters) unless otherwise noted 8-Lead (0.150" Wide) Molded Small Outline Package, JEDEC 8-Lead (0.300" Wide) Molded Dual-In-Line Package Order Number LM4880M NS Package Number M08A Order Number LM4880N NS Package Number N08E 15 www.national.com ...

Page 16

... BANNED SUBSTANCE COMPLIANCE National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...

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