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LM4818 Datasheet Preview

LM4818 Datasheet

350mW Audio Power Amplifier

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LM4818
www.ti.com
SNAS163B – APRIL 2002 – REVISED MAY 2013
LM4818
350mW Audio Power Amplifier with Shutdown
Mode
Check for Samples: LM4818
FEATURES
1
23 SOIC Surface Mount Packaging.
• Switch On/Off Click Suppression.
• Unity-Gain Stable.
• Minimum External Components.
APPLICATIONS
• General Purpose Audio
• Portable Electronic Devices
• Information Appliances (IA)
KEY SPECIFICATIONS
• THD+N at 1kHz, 350mW Continuous Average
Output Power into 1610% (max)
• THD+N at 1kHz, 300mW Continuous Average
Output Power into 810% (max)
• Shutdown Current 0.7µA (typ)
DESCRIPTION
The LM4818 is a mono bridged power amplifier that
is capable of delivering 350mWRMS output power into
a 16load or 300mWRMS output power into an 8
load with 10% THD+N from a 5V power supply.
The LM4818 Boomer™ audio power amplifier is
designed specifically to provide high quality output
power and minimize PCB area with surface mount
packaging and a minimal amount of external
components. Since the LM4818 does not require
output coupling capacitors, bootstrap capacitors or
snubber networks, it is optimally suited for low-power
portable applications.
The closed loop response of the unity-gain stable
LM4818 can be configured using external gain-setting
resistors. The device is available in SOIC package
type to suit various applications.
Typical Application
Figure 1. Typical Audio Amplifier Application Circuit
1
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.
Boomer is a trademark of Texas Instruments.
2
All other trademarks are the property of their respective owners.
3
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.
Copyright © 2002–2013, Texas Instruments Incorporated




etcTI

LM4818 Datasheet Preview

LM4818 Datasheet

350mW Audio Power Amplifier

No Preview Available !

LM4818
SNAS163B – APRIL 2002 – REVISED MAY 2013
Connection Diagram
www.ti.com
Figure 2. SOIC Package - Top View
See Package Number D
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)(3)
Supply Voltage
6.0V
Storage Temperature
65°C to +150°C
Input Voltage
Power Dissipation (PD)(4)
ESD Susceptibility(5)
ESD Susceptibility(6)
0.3V to VDD +0.3V
Internally Limited
2.5kV
200V
Junction Temperature (TJ)
Soldering Information
Small Outline Package
Vapor Phase (60 seconds)
150°C
215°C
Infrared (15 seconds)
220°C
Thermal Resistance
θJC (SOIC)
θJA (SOIC)
35°C/W
170°C/W
(1) All voltages are measured with respect to the ground pin, unless otherwise specified.
(2) 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 ensure specific performance limits. Electrical Characteristics state DC and AC electrical
specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within the
Operating Ratings. Specifications are not ensured for parameters where no limit is given. However, the typical value is a good indication
of device's performance.
(3) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and
specifications.
(4) The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA, and the ambient temperature
TA. The maximum allowable power dissipation is PDMAX = (TJMAX–TA)/θJA. For the LM4818, TJMAX = 150°C and the typical junction-to-
ambient thermal resistance (θJA) when board mounted is 170°C/W for the SOIC package.
(5) Human body model, 100pF discharged through a 1.5 kresistor.
(6) Machine Model, 220pF–240pF capacitor is discharged through all pins.
OPERATING RATINGS(1)(2)
Temperature Range TMIN TA TMAX
Supply Voltage
40°C TA 85°C
2.0V VCC 5.5V
(1) All voltages are measured with respect to the ground pin, unless otherwise specified.
(2) 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 ensure specific performance limits. Electrical Characteristics state DC and AC electrical
specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within the
Operating Ratings. Specifications are not ensured for parameters where no limit is given. However, the typical value is a good indication
of device's performance.
2
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Product Folder Links: LM4818
Copyright © 2002–2013, Texas Instruments Incorporated



Part Number LM4818
Description 350mW Audio Power Amplifier
Maker etcTI
Total Page 3 Pages
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LM4818 Datasheet PDF





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