Fault Testing - ACME AS123 LED Driver with Dimmer Control https://explore.partquest.com/node/101321 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/101321"></iframe> Title Description <p>This circuit shows fault testing of the AS123 LED Driver</p> About text formats Tags LED LightingLEDDimmerACMEAS123PWMAutomotive LightingFault Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
ACME AS123 LED Driver with Dimmer Control - Application Note https://explore.partquest.com/node/52456 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/52456"></iframe> Title Description <p>The AS123 LED Driver from ACME Semiconductor (fictional) provides fully integrated PWM dimming and a programmable current set-point. This IC is specifically for automotive rear combination (tail/stop) lighting applications. It tightly regulates the desired string current under conditions of widely varying applied DC voltage.</p><p>The PWM dimming function, which switches the LED on and off at just over 300 Hz, is active when the line input pin is high and the "PWM_disable" pin is low (</p><p>The AS123 supports current programming using a single external resistor (see r_iset in the schematic). The resistor value can be selected to give the desired LED string current, using the following formula:</p><p>r_iset = 1.85/i_desired</p><p>The AS123 is capable of regulating up to 100mA per string continuously. Therefore the value of r_iset should be no less than 18.5 Ohms. The user can change this resistor value and run a new simulation, to see the effect of this change on the LED string current.</p><p>See a "functional block diagram" schematic model of the ACME AS123 here: https://www.systemvision.com/design/acme-as123-led-driver-schematic-model</p><p>-------------- End of Example Application Note ------------------</p><p>If you are a component supplier, this type of "Live Application Note" can help your potential customers better understand the features and benefits of your components.</p> About text formats Tags LED LightingLEDDimmerACMEAS123PWMAutomotive Lighting Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
ACME AS123 LED Driver Schematic Model https://explore.partquest.com/node/52396 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/52396"></iframe> Title Description <p>This schematic represents the behavior of the ACME AS123 LED Driver. It was used to create the "schematic-based model" of that part, which is used in the companion design: "ACME AS123 LED Driver with Dimmer Control - Application Note". Please see that design for a complete description.</p><p>You can see a copy of this schematic, used directly as a functional model of the AS123, in an LED application circuit here: https://www.systemvision.com/design/acme-led-driver-full-flat-schematic</p> About text formats Tags LED LightingLEDACMEDimmer Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
