Features: ` Available in space-saving MSOP, SOIC, LLP, and micro SMD packages
` Ultra low current shutdown mode (3.3 to 2.6V - 0.01A)
` Can drive capacitive loads up to 500 pF
` Improved pop & click circuitry eliminates noises during turn-on and turn-off transitions
` 2.2 - 5.5V operation
`No output coupling capacitors, snubber networks or bootstrap capacitors required
` Unity-gain stable
` External gain configuration capabilityApplication·Mobile Phones
·PDAs
·Portable electronic devicesSpecifications
| Power@ 8Ohms, 1% THD |
1 Watt |
| Power@ 8Ohms, 10% THD |
1.2 Watt |
| THD |
0.1 % |
| PSRR |
62 dB |
| SNR |
105 dB |
| Channels |
1 Channels |
| User Supply |
5 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)............. 2000V
ESD Susceptibility (Note 5) ..............200V
Junction Temperature............... 150°C
Thermal Resistance
JC (SOP).................... 35°C/W
JA (SOP) ....................150°C/W
JA (8 Bump micro SMD) (Note 10) .......210°C/W
JC (MSOP) ...................56°C/W
JA (MSOP) ...................190°C/W
JA (LLP) ....................220°C/W
Soldering Information See AN-1112 "microSMD Wafers Level Chip Scale Package".
DescriptionThe LM4889 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 8Ω BTL load with less than 2% distortion (THD+N) from a 5VDC power supply.
Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4889 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 LM4889 features a low-power consumption shutdown mode, which is achieved by driving the shutdown pin with a logic low. Additionally, the LM4889 features an internal thermal shutdown protection mechanism.
The LM4889 contains advanced pop & click circuitry to eliminate noise which would otherwise occur during turn-on and turn-off transitions.
The LM4889 is unity-gain stable and 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) |
| LM4889ITL |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM4889ITLX |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM4889LD |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM4889LDX |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM4889MA |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM4889MAX |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM4889MM |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM4889MMX |
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.
More Application Notes
| Title |
Size in Kbytes |
Date |
|
| AN-1496: Application Note 1496 Noise, TDMA Noise, and Suppression Techniques |
85 Kbytes |
28-Apr-08 |
Download |
AN-1496 (Chinese): Application Note 1496 Noise, TDMA Noise, and Suppression Techniques
|
407 Kbytes |
|
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LM4889 Data Sheet
