Datasheet
Package Availability, Models, Samples & Pricing
General Description
The LM4970 is a LED driver with an audio synchronization mode that virtually eliminates the need for real time software processing
for LED lighting effects. The LM4970 includes three individual PWM color LED drivers that provide up to 42mA of current drive
for each PWM LED output.
The LM4970 features an audio synchronization mode where the audio input signal that is mixed in from three audio inputs is
filtered into three frequency bands, with each frequency band assigned to a specific PWM LED driver.
The PWM LED drivers can also be directly programmed through an I
2C compatible interface for applications where user defined LED pattern, color, and intensity programmability is a priority.
The LM4970 also features an audio input gain control which allows the user to increase the gain if the audio input signal
does not create a bright enough effect on the LEDs. The LM4970 is a feature rich LED driver that is available in a space saving
14 pin non-pullback LLP package.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
|
LM4970SD | CMOS7 | 0 | 18406 | 0 | 0 | 1089000 | 4 | 309006723
|
|
LM4970SDX | CMOS7 | 0 | 18406 | 0 | 0 | 1089000 | 4 | 309006723
|
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.
Design Tools
| Title | Size in Kbytes |
Date |
 |
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| Audio Amplifier Digital Control Interface Evaluation Board Software |
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View |
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[Information as of 7-Nov-2009]
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RoHS Compliance Information
