LM4877 1 Watt Audio Power Amplifier micro SMD package with Shutdown Logic Low
February 2000
LM4877 1 Watt Audio Power ...
LM4877 1 Watt Audio Power Amplifier micro SMD package with Shutdown Logic Low
February 2000
LM4877 1 Watt Audio Power Amplifier in micro SMD package with Shutdown Logic Low
General Description
The LM4877 is a bridge-connected audio power amplifier capable of delivering 1 W of continuous average power to an 8Ω load with less than .2% (THD) 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 LM4877 does not require output coupling
capacitors or bootstrap
capacitors. It is optimally suited for low-power portable applications. The LM4877 features an externally controlled, low-power consumption shutdown mode, as well as an internal thermal shutdown protection mechanism. The unity-gain stable LM4877 can be configured by external gain-setting resistors.
Key Specifications
n Power Output at 0.2% THD n Shutdown Current 1 W (typ) 0.01 µA (typ)
Features
n n n n n micro SMD package (see App. note AN-1112) 5V - 2V operation No output coupling
capacitors or bootstrap
capacitors. Unity-gain stable External gain configuration capability
Applications
n Cellular Phones n Portable Computers n Low
Voltage Audio Systems
Typical Application
Connection Diagram
8 Bump micro SMD
DS101290-23
Top View Order Number LM4877IBP, LM4877IBPX See NS Package Number BPA08B6B
DS101290-1
FIGURE 1. Typical Audio Amplifier Application Circuit
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