Datasheets
Application Notes
Other Technical Documents
All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.
Moisture Sensitivity Level Data for LM3431.
A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.
National's certificate of product compliance for LM3431 is located at RoHS Status.
Part Number(s)
(NSID) | Description | Availability | Current Reported Stock | Budgetary Pricing | Pack
Size |
|---|
LM3431EVAL/NOPB
| Evaluation Board for the 3-Channel Constant Current LED Driver with Integrated Boost Controller | Full production
Lead Free (RoHS)
|
| $90.00 each | 1 |
| Description
The LM3431 is a combination switching boost voltage regulator and multi-channel LED current controller.
The LM3431 evaluation board is designed to drive 4 parallel strings of 8 series LEDs at 140mA per string from an input voltage range of 8V to 18V. The boost switcher regulates LED cathode voltage for optimum efficiency, while allowing the output voltage to vary according to the LED forward voltage. The LM3431 incorporates complete fault protection features including LED short and open protection, over-current protection, over-voltage and under-voltage protection, and thermal shutdown. The error detection flag can be monitored at the DLY post, which has a programmable delay time.
The board includes a DIM input terminal for a selectable digital or analog dimming control signal. PWM dimming frequencies up to 1kHz at 100:1 contrast ratio and contrast ratios up to 500:1 at 200Hz are possible.
Contents:
|
National Semiconductor follows the provisions of the Product Stewardship Guide for Customers
(
CSP-9-111C1)
and Banned Substances and Materials of Interest Specification
(
CSP-9-111S2)
for regulatory environmental compliance. Details may be found at:
www.national.com/en/packaging/greennopb.html.
Lead free products are RoHS compliant.
Lead Free product status is available through the search tool located
here
All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.
Moisture Sensitivity Level Data for LM3431.
A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.
National's certificate of product compliance for LM3431 is located at RoHS Status.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
|
LM3431AMH | ABCD150 | 0 | 42680 | 0 | 0 | 6394000 | 1 | 1814314958
|
|
LM3431AMHX | ABCD150 | 0 | 42680 | 0 | 0 | 6394000 | 1 | 1814314958
|
|
LM3431AQMH | ABCD150 | 0 | 42680 | 0 | 0 | 6394000 | 1 | 1814314958
|
|
LM3431AQMHX | ABCD150 | 0 | 42680 | 0 | 0 | 6394000 | 1 | 1814314958
|
|
LM3431MH | ABCD150 | 0 | 42680 | 0 | 0 | 6394000 | 1 | 1814314958
|
|
LM3431MHX | ABCD150 | 0 | 42680 | 0 | 0 | 6394000 | 1 | 1814314958
|
|
LM3431QMH | ABCD150 | 0 | 42680 | 0 | 0 | 6394000 | 1 | 1814314958
|
|
LM3431QMHX | ABCD150 | 0 | 42680 | 0 | 0 | 6394000 | 1 | 1814314958
|
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.
All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.
Moisture Sensitivity Level Data for LM3431.
A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.
National's certificate of product compliance for LM3431 is located at RoHS Status.
