The LM3401 is a switching controller designed to provide constant current to high power LEDs. The LM3401 drives an external
P-MOSFET switch for step-down (Buck) regulators. The LM3401 delivers constant current within ±6% accuracy to a wide variety
and number of series connected LEDs. Output current is adjusted with an external current sensing resistor to drive high power
LEDs in excess of 1A.
For improved accuracy and efficiency, the LM3401 features dual-side hysteresis, very low reference voltage, and short propagation
delay. A cycle by cycle current limit provides protection against over current and short circuit failures. Additional features
include adjustable hysteresis and a CMOS compatible input pin for PWM dimming.
| Title | Size in Kbytes |
Date |
 |
| AN-103: Application Note 103 LM340 Series Three Terminal Positive Regulators |
421
Kbytes |
3-Oct-02 |
Download |
| AN-1192: Application Note 1192 Overture™ Series High Power Solutions |
548
Kbytes |
15-Jun-04 |
Download |
| AN-1982: Application Note 1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool |
63
Kbytes |
15-Jul-09 |
Download |
| AN-1839: Application Note 1839 LM3402/LM3404 Fast Dimming and True Constant LED Current Evaluation Board |
678
Kbytes |
10-Dec-08 |
Download |
AN-1839 (Chinese): Application Note 1839 LM3402/LM3404 Fast Dimming and True Constant LED Current Evaluation Board
|
746 Kbytes |
|
 |
| AN-1545: Application Note 1545 LM3404/LM3404HV Evaluation Board |
665
Kbytes |
14-Aug-09 |
Download |
AN-1545 (Chinese): Application Note 1545 LM3404/LM3404HV Evaluation Board
|
493 Kbytes |
|
|
| AN-1585: Application Note 1585 LM3402 and LM3404 High Power PSOP-8 Evaluation Board |
493
Kbytes |
4-Oct-07 |
Download |
| AN-1500: Application Note 1500 LM3402/02HV Demo Board |
29977
Kbytes |
5-Jun-07 |
Download |
AN-1500 (Chinese): Application Note 1500 LM3402/02HV Demo Board
|
531 Kbytes |
|
|
| AN-127: Application Note 127 LM143 Monolithic High Voltage Operational Amplifier Applications |
441
Kbytes |
2-May-04 |
Download |
| AN-298: Application Note 298 Isolation Techniques for Signal Conditioning |
379
Kbytes |
2-Oct-02 |
Download |
| AN-182: Application Note 182 Improving Power Supply Reliability with IC Power Regulators |
27
Kbytes |
3-Oct-02 |
Download |
| AN-1853: Application Note 1853 COT Drivers Control LED Ripple Current |
158
Kbytes |
23-Sep-08 |
Download |
| AN-1763: Application Note 1763 LM3407 Evaluation Board Reference Design |
421
Kbytes |
21-Jan-09 |
Download |
AN-1763 (Chinese): Application Note 1763 LM3407 Evaluation Board Reference Design
|
531 Kbytes |
|
|
| AN-1750: Application Note 1750 LM3406 Evaluation Board |
481
Kbytes |
9-Sep-08 |
Download |
| 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-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 |
|
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AN-1148 (Chinese): Application Note 1148 Linear Regulators: Theory Of Operation and Compensation
|
396 Kbytes |
|
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