EDN

Constant Current vs. Constant Voltage (LED Drivers)

LEDs for lighting are found anywhere from DIY IoT modules to commercial lighting applications and the cabins of airplanes. To run properly, these critical lighting devices require a precise balance of ...
EDN

Constant-current, constant-voltage converter drives white LEDs

LEDs usually take their drive from a constant dc-current source to maintain constant luminescence. Most dc/dc converters, however, deliver a constant voltage by ...
Electronic Design

5 A Constant-Current, Constant-Voltage Converter with Internal PWM Generator

The LT3954, a DC/DC converter designed to operate as a constant-current source and constant-voltage regulator with an internal 5A switch, is now available from Linear Technology. The LT3954, a DC/DC ...
Electronic Design

Enhanced VLED Driver Updates JFET Constant-Current Source

Download this article in PDF format. High-brightness visible-light LEDs (VLEDs) require a constant-current source. This simple, RFI-free circuit takes advantage of the normally-on properties of the ...
Embedded

Voltage references 101

Many embedded systems require a stable, low-noise DC reference. This reference can be a stable current or voltage source. These references are used in many ways. Some typical uses are listed as ...