LM4862M Datasheet, PDF (1/18 Pages) Texas Instruments – LM4862 675 mW Audio Power Amplifier with Shutdown

LM4862
www.ti.com
SNAS102F – MAY 1997 – REVISED MAY 2013
LM4862
675 mW Audio Power Amplifier with Shutdown
Mode
Check for Samples: LM4862
FEATURES
1
•2 No Output Coupling Capacitors, Bootstrap
Capacitors or Snubber Circuits are Necessary
• Small Outline or PDIP Packaging
• Unity-Gain Stable
• External Gain Configuration Capability
• Pin Compatible with LM4861
APPLICATIONS
• Portable Computers
• Cellular Phones
• Toys and Games
KEY SPECIFICATIONS
• THD+N for 500mW Continuous Average
Output Power at 1kHz into 8Ω 1% (max)
• Output Power at 10% THD+N at 1kHz into 8Ω
825 mW (typ)
• Shutdown Current 0.7μA (typ)
DESCRIPTION
The LM4862 is a bridge-connected audio power
amplifier capable of delivering typically 675mW of
continuous average power to an 8Ω load with 1%
THD+N from a 5V power supply.
Boomer audio power amplifiers were designed
specifically to provide high quality output power with a
minimal amount of external components. Since the
LM4862 does not require output coupling capacitors,
bootstrap capacitors, or snubber networks, it is
optimally suited for low-power portable systems.
The LM4862 features an externally controlled, low-
power consumption shutdown mode, as well as an
internal thermal shutdown protection mechanism.
The unity-gain stable LM4862 can be configured by
external gain-setting resistors.
Typical Application
Connection Diagram
*Refer to Application Information for information concerning proper
selection of the input coupling capacitor.
Figure 1. Typical Audio Amplifier Application
Circuit
Figure 2. Small Outline and PDIP Package-Top
View
See Package Number D0008A or P0008E
1
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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2
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 © 1997–2013, Texas Instruments Incorporated