LM4905

If Military/Aerospace specified devices are required,please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.
Supply Voltage (Note 10) ...................................6.0V
Storage Temperature .................−65°C to +150°C
Input Voltage .............................−0.3V to V_DD +0.3V
Power Dissipation (Notes 3, 11) ....Internally Limited
ESD Susceptibility (Note 4) ..............................2000V
ESD Susceptibility (Note 5) ................................200V
Junction Temperature ....................................150°C
Thermal Resistance
   _JC (MSOP) ...............................................56°C/W
   _JA (MSOP) .............................................190°C/W

The LM4905 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 1 watt of continuous average power to an 8 BTL load with less than 1% distortion (THD+N) from a 5V_DC power supply.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4905 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage applications where minimal power consumption is a primary requirement.

The LM4905 features a low-power consumption shutdown mode, which is achieved by driving the shutdown pin with logic low. Additionally, the LM4905 features an internal thermal shutdown protection mechanism.The LM4905 contains advanced pop & click circuitry which eliminates noise which would otherwise occur during turn-on and turn-off transitions.

The LM4905 is unity-gain stable and can be configured by external gain-setting resistors.