Features: · micro SMD package (see App. note AN-1112)
· 5V - 2V operation
· No output coupling capacitors or bootstrap capacitors.
· Unity-gain stable
· External gain configuration capabilityApplication· Cellular Phones
· Portable Computers
· Low Voltage Audio Systems
Specifications
| Power@ 4Ohms, 1% THD |
0.6 Watt |
| Power@ 8Ohms, 1% THD |
0.32 Watt |
| Power@ 4Ohms, 10% THD |
0.75 Watt |
| Power@ 8Ohms, 10% THD |
0.43 Watt |
| THD |
0.1 % |
| PSRR |
65 dB |
| SNR |
98 dB |
| Channels |
1 Channels |
| Supply Range |
+2.0 - +5.5 V |
| THD Conditions |
Po=.25 W @Vs=5V, R=8ohms, 20Hz-20kHz |
| User Supply |
2.6 Volt |
| Shutdown Type |
Low |
| Temperature Min |
-40 deg C |
| Temperature Max |
85 deg C |
| View Using Catalog |
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.
Supply Voltage.............. 6.0V
Storage Temperature ...−65°C to +150°C
Input Voltage −.......0.3V to V +0.3V
Power Dissipation (Note 3) .Internally Limited
ESD Susceptibility (Note 4) .......2500V
ESD Susceptibility (Note 5)........ 250V
Junction Temperature......... 150°C
Soldering Information See AN-1112"Micro-SMD Wafers Level Chip Scale Package.
DescriptionThe LM4877 is a bridge-connected audio power amplifier capable of delivering 1 W of continuous average power to an 8 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.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
| LM4877IBPX |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM4877ITP |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM4877ITPX |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.For more information on Reliability Metrics, please click here.
LM4877 Data Sheet
