Features: · No output coupling capacitors, bootstrap capacitors, or snubber circuits are necessary
· Small Outline packaging
· Unity-gain stable
· External gain configuration capability
· Pin compatible with LM4861 and LM4871Application· Mobile Phones
· Portable Computers
· Desktop Computers
· Low Voltage Audio SystemsPinout
Specifications
| Power@ 4Ohms, 1% THD |
1.8 Watt |
| Power@ 8Ohms, 1% THD |
1.2 Watt |
| Power@ 4Ohms, 10% THD |
2.3 Watt |
| Power@ 8Ohms, 10% THD |
1.5 Watt |
| THD |
0.25 % |
| PSRR |
65 dB |
| SNR |
98 dB |
| Channels |
1 Channels |
| Supply Range |
+2.0 - +5.5 V |
| THD Conditions |
Po=1 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 |
Supply Voltage 6.0V
Storage Temperature ....... −65°C to +150°C
Input Voltage ...........−0.3V to VDD +0.3V
Power Dissipation (Note 3) Internally Limited
ESD Susceptibility (Note 4) ........... 5000V
ESD Susceptibility (Note 5) ............250V
Junction Temperature .............. 150°C
Soldering Information
Small Outline Package
Vapor Phase (60 sec.) ..............215°C
Infrared (15 sec.)................ 220°C
See AN-450 ²Surface Mounting and their Effects on
Product Reliability² for other methods of
soldering surface mount devices.
qJC (typ)-M08A ................ 35°C/W
qJA (typ)-M08A ................140°C/WDescriptionThe LM4876 is a single 5V supply bridge-connected audio power amplifier capable of delivering 1.1W (typ) of continuous average power to an 8 load with 0.5% THD+N.
Like other audio amplifiers in the Boomer series, the LM4876 is designed specifically to provide high quality output power with a minimal amount of external components. The LM4876 does not require output coupling capacitors, bootstrap capacitors, or snubber networks. It is perfectly suited for low-power portable systems.
The LM4876 features an active low externally controlled, micro-power shutdown mode. Additionally, the LM4876 features an internal thermal shutdown protection mechanism. For PCB space efficiency, the LM4876 is available in MSOP and SO surface mount packages.
The unity-gain stable LM4876's closed loop gain is set using external resistors.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
| LM4876M |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM4876MM |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM4876MMX |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM4876MX |
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.
LM4876 Data Sheet
