LED DRIVER CIRCUITS The design in Figure 3 represents a constant current chopper driver that provides a dc current with 10% ripple to an LED string used to edge light an LCD.

This code supports Application Note AN1138: A Digital Constant Current Power LED Driver, using the PIC12HV615? an 8-pin, PIC microcontroller (MCU) with many integrated analog features. The LED driver ...

The LED current is adjustable via a high ohmic resistor on a dedicated pin with an IC supply voltage ranging between 6 V and 42 V. For safe and reliable operation and to extend the overall LED ...

Posted in LED Hacks Tagged constant current, driver, mosfet, transistor ← Reinventing The Clapper With A Knock-based Home Automation Controller Workout Timer Has Its Own Fight Bell → ...

The A6278 from Allegro Microsystems is an 8-channel constant-current latched LED driver incorporating an open LED detection capability. It is a BiCMOS device which includes an 8-bit CMOS shift ...

A typical LED system, Figure 1 , will have a communication interface, LEDs of various colors with each color representing a channel, some sort of intelligence, and a constant-current driver for each ...

High-power LEDs challenge electronics engineers to design accurate and efficient, yet simple, driver circuits. Conventionally, driving high-power strings with accurate current requires dedicated ...

Hi, I'm Bill. I'm a software developer with a passion for making and electronics. I do a lot of things and here is where I document my learning in order to be able to inspire other people to make ...

The driver’s CAP pin and LED pin bias currents are on the order of 70 µA. This level is necessary for the high-side current sensing required to properly drive the LEDs.

In this case, a PIC12F1501. A PIC alone won’t handle a 10 watt LED, so he utilized a CAT4101 constant current LED driver from ON Semi. The PIC performs three tasks in this circuit.