Datasheet
Package Availability, Models, Samples & Pricing
General Description
The LM3409/09HV are P-channel MosFET (PFET) controllers for step-down (buck) current regulators. They offer wide input voltage
range, high-side differential current sense with low adjustable threshold voltage, fast output enable/disable function and
a thermally enhanced eMSOP-10 package. These features combine to make the LM3409/09HV ideal for use as constant current sources
for driving LEDs where forward currents up to 5A are easily achievable. The LM3409/09HV uses Constant Off-Time (COFT) control
to regulate an accurate constant current without the need for external control loop compensation. Analog and PWM dimming
are easy to implement and result in a highly linear dimming range with excellent achievable contrast ratios. Programmable
UVLO, low-power shutdown, and thermal shutdown complete the feature set.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
|
LM3409MY | ABCD150XV1 | 0 | 3868 | 0 | 0 | 2595000 | 2 | 736338335
|
|
LM3409MYX | ABCD150XV1 | 0 | 3868 | 0 | 0 | 2595000 | 2 | 736338335
|
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 |
 |
|
|
| Article - #126: Dimming Techniques for Switched-Mode LED Drivers |
386 Kbytes |
30-Jul-2009 |
View Online |
Download |
|
Application Notes
| Title | Size in Kbytes |
Date |
|
| AN-1954: Application Note 1954 LM3409 Demonstration Board |
607
Kbytes |
11-Jun-09 |
Download |
AN-1954 (Chinese): Application Note 1954 LM3409 Demonstration Board
|
502 Kbytes |
|
 |
| AN-1953: Application Note 1953 LM3409HV Evaluation Board |
722
Kbytes |
11-Jun-09 |
Download |
AN-1953 (Chinese): Application Note 1953 LM3409HV Evaluation Board
|
632 Kbytes |
|
|
More Application Notes
| Title | Size in Kbytes |
Date |
|
| AN-1982: Application Note 1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool |
63
Kbytes |
15-Jul-09 |
Download |
| AN-1590: Application Note 1590 LM3405 Demo Board |
475
Kbytes |
19-Mar-07 |
Download |
| AN-1644: Application Note 1644 Powering and Dimming High-Brightness LEDs with the LM3405 Constant-Current Buck Regulator |
174
Kbytes |
17-Jan-08 |
Download |
| AN-181: Application Note 181 3-Terminal Regulator Is Adjustable |
165
Kbytes |
1-May-04 |
Download |
| AN-1529: Application Note 1529 LM3430 Evaluation Board |
2770
Kbytes |
21-Aug-07 |
Download |
AN-1529 (Chinese): Application Note 1529 LM3430 Evaluation Board
|
789 Kbytes |
|
|
| AN-1148: Application Note 1148 Linear Regulators: Theory Of Operation and Compensation |
200
Kbytes |
10-May-04 |
Download |
AN-1148 (Japanese): Application Note 1148 Linear Regulators: Theory Of Operation and Compensation
 |
216 Kbytes |
|
 |
AN-1148 (Chinese): Application Note 1148 Linear Regulators: Theory Of Operation and Compensation
|
396 Kbytes |
|
|
[Information as of 7-Nov-2009]
|
RoHS Compliance Information
