Datasheet
Package Availability, Models, Samples & Pricing
| Part Number | Package | Factory Lead Time | Models | Samples & Electronic Orders | Budgetary Pricing | Std Pack Size | Package Marking Format |
| Type | Pins | Spec. | MSL Rating | Peak Reflow | RoHS Report | CAD Symbols | Weeks | Qty | Qty | $US each |
| LM3405AEVAL | 1.6MHz, 1A Constant Current Buck LED Driver with Internal Compensation in Tiny SOT-23 Package | Full production | N/A
|
| 1+ | $45.00 | 1 | - |
| 8 weeks | N/A |
| LM3405AXMKE | TSOT | 6 | NOPB | 1 | 260 | RoHS |
N/A |
Full production | N/A
| 
| 500+ | $1.24 | reel of 250 | SSEB XTT |
| 6 weeks | N/A |
| LM3405AXMK | TSOT | 6 | NOPB | 1 | 260 | RoHS |
N/A |
Full production | N/A
| 
| 1K+ | $1.10 | reel of 1000 | SSEB XTT |
| 8 weeks | N/A |
| LM3405AXMKX | TSOT | 6 | NOPB | 1 | 260 | RoHS |
N/A |
Full production | N/A
|
| 1K+ | $1.10 | reel of 3000 | SSEB XTT |
| 6 weeks | N/A |
General Description
The LM3405A is a 1A constant current buck LED driver designed to provide a simple, high efficiency solution for driving high
power LEDs. With a 0.205V reference voltage feedback control to minimize power dissipation, an external resistor sets the
current as needed for driving various types of LEDs. Switching frequency is internally set to 1.6MHz, allowing small surface
mount inductors and capacitors to be used. The LM3405A utilizes current-mode control and internal compensation offering ease
of use and predictable, high performance regulation over a wide range of operating conditions. With a maximum input voltage
of 22V, it can drive up to 5 High-Brightness LEDs in series at 1A forward current, with the single LED forward voltage of
approximately 3.7V. Additional features include user accessible EN/DIM pin for enabling and PWM dimming of LEDs, thermal shutdown,
cycle-by-cycle current limit and over-current protection.
Reliability Metrics
| Part Number |
Process |
Early Failure Rate - Rejects |
Sample Size (EFR) |
PPM * |
Rel. Rejects |
Device Hours |
Long Term Failure Rates (FITS) |
MTTF |
|
LM3405AXMK | PVIP050 | 0 | 8430 | 0 | 0 | 495000 | 8 | 140457601
|
|
LM3405AXMKE | PVIP050 | 0 | 8430 | 0 | 0 | 495000 | 8 | 140457601
|
|
LM3405AXMKX | PVIP050 | 0 | 8430 | 0 | 0 | 495000 | 8 | 140457601
|
For more information on Reliability Metrics, please click here.
Reference Designs
Application Notes
[Information as of 6-Sep-2008]
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