1.6MHz, 1A Constant Current Buck LED Driver With Internal Compensation In Tiny SOT23 Package

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.
By National Semiconductor Corporation
Part Manufacturer Description Datasheet Samples
LM3405A-REF Texas Instruments LM3405A Reference Design for MR16 LED Bulb, 600mA
LM3405AXMYX/NOPB Texas Instruments 1.6MHz, 1A Constant Current Buck LED Driver with Internal Compensation 8-MSOP-PowerPAD
LM3405AXMK/NOPB Texas Instruments 1.6MHz, 1A Constant Current Buck LED Driver with Internal Compensation 6-SOT-23-THIN -40 to 125
LM3405AXMY/NOPB Texas Instruments 1.6MHz, 1A Constant Current Buck LED Driver with Internal Compensation 8-MSOP-PowerPAD
LM3405AXMKE/NOPB Texas Instruments 1.6MHz, 1A Constant Current Buck LED Driver with Internal Compensation 6-SOT-23-THIN -40 to 125
LM3405AXMKX/NOPB Texas Instruments 1.6MHz, 1A Constant Current Buck LED Driver with Internal Compensation 6-SOT-23-THIN -40 to 125
LM3405A 's PackagesLM3405A 's pdf datasheet
LM3405AXMKE TSOT
LM3405AXMK TSOT
LM3405AXMKX TSOT




LM3405A Pinout, Pinouts
LM3405A pinout,Pin out
This is one package pinout of LM3405A,If you need more pinouts please download LM3405A's pdf datasheet.

LM3405A Application circuits
LM3405A circuits
This is one application circuit of LM3405A,If you need more circuits,please download LM3405A's pdf datasheet.


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