Constant Current Buck Led Driver

The chart below shows the number of serial connected leds and the required power supply voltage.

Constant current buck led driver.

By default the femtobuck is driven at 330ma. With constant current led driver it s best to connect leds in series so that all leds get the same exact current. The lm3414 and lm3414hv are 1 a 60 w 1 common anode capable constant current buck led drivers. That current can be reduced by either presenting an analog voltage or a pwm signal to the board.

They are suitable for driving single string of 3 w hbled with up to 96 efficiency. You can series parallel connect leds to drive more leds as needed. 0a011 d v xxx 19 79 sale price. Whdts 20a power supply module dc dc 6v 40v to 1 2v 35v step down buck converter adjustable buck adapter cvcc constant voltage constant current converter led driver 4 1 out of 5 stars 112 16 99 16.

With a 0 205 v reference voltage feedback control to minimize power dissipation an external resistor sets the current as needed for driving various types. It can be increased to 660ma by closing a solder jumper on the board as described later in this tutorial. These led drivers offer the highest efficiency lowest noise and the smallest footprints. Led flashlights led lightbulbs 3 description the lm3405a is a 1 a constant current buck led driver designed to provide a simple high efficiency solution for driving high power leds.

Buck pucktm constant current led drivers browse our complete selection of wired buckpuck drivers feature 6 long 24awg colored leads our selection of 7 pin sip buckpuck drivers can be soldered directly to a pcb or you can plug the driver into one of our optional wiring harnesses. The hysteretic control gives good power supply rejection and fast response during load transients and pwm dimming to led arrays of varying number and type. Other differentiating features include integrated schottky diodes accurate led current matching and multiple output capability. They accept input voltages from 4 5 vdc to 65 vdc and deliver up to 1 a average led current with 3 accuracy.

The a011 series luxdrive flexblock led buck boost constant current driver is a low voltage dc input module for powering high brightness leds. Ideal for industrial and general lighting applications utilizing the minimal external components. Analog devices step down buck led drivers are ideal for applications where the input voltage is above the led voltage as in many automotive or industrial applications. The femtobuck is a small size single output constant current led driver.

Other features include integrated schottky diodes accurate led current matching and multiple output capability.