Uln2003 darlington driver iceland

Using the uln2003a transistor array with arduino youtube. It uses two transistors, so that the second transistor boosts the current, which has already been boosted by the first transistor. Uln2003 is a chip widely used in electronics which provide high current. This is a circuit invented by an american engineer, dr. The uln2003a is an array of seven npn darlington transistors capable of 500 ma, 50 v output. Uln200x, ulq200x highvoltage, highcurrent darlington. Uln2003a stmicroelectronics datasheet and cad model. Honduras, hong kong, hungary, iceland, india, indonesia, iran, iraq. Relay driver circuit using uln2003 and its applications. Using the uln2003a transistor array with arduino lewis loflin. Uln2003a darlington transistor array circuit examples. The uln2003 is monolithic highvoltage, highcurrent. The uln2003a is a highvoltage, highcurrent darlington transistor array consisting of seven npn darlington pairs that feature highvoltage outputs with commoncathode clamp diodes for switching inductive loads. Npn darlington pairs that feature highvoltage outputs with commoncathode clamp diodes for switching inductive loads.

One solution to the problem use a darlington driver. Uln2803a darlington transistor array driver ic youtube. Applications include relay drivers, hammer drivers, lamp drivers, display drivers led and gas discharge, line drivers, and logic buffers. The collectorcurrent rating of a single darlington pair is 500 ma. Uln2003 is a high voltage and high current darlington transistor array. The uln2001, uln2002, uln2003 and uln 2004 are highvoltage, highcurrent darlington arrays each containing seven open collector darlington pairs with common emitters.

The seven npn darlington connected transistors in these arrays are well suited for driving lamps, relays, or printer hammers in a variety of industrial and co. Here we will explore using the versatile uln2003a darlington transistor array with a typical microcontroller such as arduino. Darlington transistor driver array on semiconductor. In the upper image the actual darlington array connection is shown for the each driver.

Applications include relay drivers, hammer drivers, lamp drivers, display drivers. Each channel is rated at 500 ma and can withstand peak currents of 600 ma. It features commoncathode flyback diodes for switching. Uln2003 darlington using highpower stepper motor driver chip. Uln2003a 50v, 7ch darlington transistor array, 20c to.

It is made up of seven open collector darlington pairs with common emitter. Darlington transistor connected in a configuration where one of. Give the output logic of your microcontroller projects more current and voltage to drive larger loads with this simple to use chip. Suppression diodes are included for inductive load driving and the inputs. Uln2003 is a very famous relay driver integrated circuit. Uln2001, uln2002 uln2003, uln2004 stmicroelectronics. Uln2003 is a relay driver ic consisting of a darlington array. Datasheet search engine for electronic components and semiconductors.