23749

·  68W cont. avg. output power into 4X at V_CC e g28V
·  38W cont. avg. output power into 8X at V_CC e g28V
·  50W cont. avg. output power into 8X at V_CC e g35V
·  135W instantaneous peak output power capability
·  Signal-to-Noise Ratio t 92 dB
·  An input mute function
·  Output protection from a short to ground or to the supplies via internal current limiting circuitry
·  Output over-voltage protection against transients from inductive loads
·  Supply under-voltage protection, not allowing internal biasing to occur when lV_EEl a lV_CCl s 12V, thus eliminating turn-on and turn-off transients
·  11-lead TO-220 package

·  Component stereo
·  Compact stereo
·  Self-powered speakers
·  Surround-sound amplifiers
·  High-end stereo TVs

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales ffice/Distributors for availability and specifications.
Supply Voltage lV⁺l+lV^-l (No Signal) ................................94V
Supply Voltage lV⁺l+lV^-l (Input Signal) ...........................84V
Common Mode Input Voltage (V⁺ or V^-) and lV⁺l a lV^-l s 80V
Differential Input Voltage (Note 12) ...............................60V
Output Current Internally Limited
Power Dissipation (Note 3) .........................................125W
ESD Susceptibility (Note 4) ........................................3000V
Junction Temperature (Note 5) ...................................150
Soldering Information
T Package (10 seconds) ..............................................260
Storage Temperature ..................................-40 to a150
Thermal Resistance
_JC .............................................................................1/W
_JA ...........................................................................43/W
Temperature Range
T_MIN T_A T_MAX ...................................-20 T_A +85
Supply Voltage lV⁺l + lV^-l ..................................20V to 84V

Note: Operation is guaranteed up to 84V, however, distortion may be introduced from SPiKe Protection Circuitry if proper thermal considerations are not taken into account. Refer to the Thermal Considerations section for more information.(See SPiKeTM Protection Response)

The LM3886 is a high-performance audio power amplifier capable of delivering 68W of continuous average power to a 4X load and 38W into 8X with 0.1% (THD a N) from 20 Hz±20 kHz.

The performance of the LM3886, utilizing its Self Peak Instantaneous Temperature (§Ke) (SPiKe) Protection Circuitry, puts it in a class above discrete and hybrid amplifiers by providing an inherently, dynamically protected Safe Operating Area (SOA). SPiKe Protection means that these parts are completely safeguarded at the output against overvoltage, undervoltage, overloads, including shorts to the supplies, thermal runaway, and instantaneous temperature peaks.

The LM3886 maintains an excellent Signal-to-Noise Ratio of greater than 92 dB with a typical low noise floor of 2.0 mV. It exhibits extremely low (THD a N) values of 0.03% at the rated output into the rated load over the audio spectrum, and provides excellent linearity with an IMD (SMPTE) typical rating of 0.004%.