Simple single and multichannel relay drivers are offered in diodes inhouse packaging expertise. Freelance electronics electronic components ic uln2003an from allegro microsystems, military spec, motorola corp, sgs thomson, sprague, texas instruments. Uln2004an 50v, 7ch darlington transistor array with 15v input. Each of the six relays has a three position toggle switch. Applications include relay drivers, hammer drivers, lamp drivers, display. Relay driver circuit ic uln2003 is one of popular realy driver circuits. Maximum power dissipation is a function of tjmax, rthja and ta. Pins 18 receive the low level signals, pin 9 is grounded for the low level signal reference. Uln2004an texas instruments discrete semiconductor products. A limitless number of combinations can be configured for each channel on the rd to control the switching of circuits on. The uln2001a2002a2003a and 2004a are supplied in a 16pin dip package with a copper leadframe to reduce thermal resistance. Uln2003lv 7channel relay and inductive load sink driver 1 features 3 description the uln2003lv is a lowvoltage and low power 1 7channel high current sink drivers upgrade oftis popular uln2003 family 7channel supports up to 8v ouput pullup voltage darlington transistor array.
These devices are capable of driving a wide range of loads including solenoids, relays, dc motors, led displays, filament. Voltage references 29 voltage supervisors 45 power modules. This device is offered in a 20pin, 5mm x 5mm tqfn package, resulting in substantial boardspace savings. Octopart is the worlds source for uln2004an availability, pricing, and technical specs and other electronic parts. The required current to run the relay coil is more than can be supplied by various integrated circuits like opamp, etc. Pricing and availability on millions of electronic components from digikey. Using uln2003 to drive relays first time schematic.
A relay driver ic is an electromagnetic switch that will be used whenever we want to use a low voltage circuit to switch a light bulb on and off which is connected to 220v mains supply. The prices are representative and do not reflect final pricing. Relay driver applications descriptionordering information the uln2001a, uln2002a, uln2003a, uln2004a, ulq2003a, and ulq2004a are highvoltage, highcurrent darlington transistor arrays. So the interface that we use is called a relay driver ic and this still a driver ic is called uln200. A simple circuit that drives up to four singlecoil latching relays figure 2 includes a parallelinterface relay driver u1 with opendrain outputs figure 3 and inductivekickback protection. Its contains seven darlington pair of a transistor which have high voltage and high current carrying capability. Its contains seven darlington pair of a transistor. Relay driver ics products microchip technology inc. General safety information read all the instructions and cautions in the manual before starting the installation. Recent listings manufacturer directory get instant insight into any electronic component. Pricing and availability on millions of electronic components from digikey electronics.
Based on location data, the suggested version of the page for you is. Relay driver applications designed to be interchangeable with sprague uln2001a series 6b. Uln2001, uln2002 uln2003, uln2004 stmicroelectronics. For 100v otherwise interchangeable versions of the ulx2003a devices, see the slrs023 data sheet for the sn75468 and sn75469 devices. The relay driver uln2003 ic is a high voltage and current darlington array ic, it comprises of 7open collector darlington pairs with common emitters. Uln2004an texas instruments integrated circuits ics. Relay driver circuit using ic uln2003 with applications. The uln2001a2002a2003a and 2004a are supplied in a 16pin dip package. The max4896 8channel relay and load driver is designed for medium voltage applications up to 50v.
These versatile devices are useful for driving a wide range of loads including solenoids, relay dc motors, led display filament lamps, thermal. Acdc led drivers 54 dcdc led drivers 35 linear led drivers 52 motor drivers. Diodes incorporated uln2002a uln2003a uln2004a high voltage. Uln2004a data sheet, product information and support. Octopart is the worlds source for uln2004an availability, pricing, and technical specs.
Contact your local microchip sales representative or distributor for volume and or discount pricing. Applications include relay drivers, hammer drivers, lamp drivers, display drivers led and gas discharge, line drivers, and logic buffers. Ti, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. Uln2003 is a very famous relay driver integrated circuit. I have a need to connect an arm microcontroller with 3. The ic uln2003a comprises of 7npn darlington pairs as. Single relay driver ic this asic provides up to 350 ma of drive current for driving a relay. Apr 26, 2015 therefore relay driver circuits ic is used to derive relays properly. The ulx200xa devices are highvoltage, highcurrent darlington.
May 10, 2015 give the output logic of your microcontroller projects more current and voltage to drive larger loads with this simple to use chip. Microcontroller interfacing to relays using uln2003 relay. Find the best pricing for texas instruments uln2004an by comparing bulk discounts from 11 distributors. This ic is commonly used to drive relay modules, motors, high current leds and even stepper motors. Revised june 2004 2 post office box 655303 dallas, texas 75265 descriptionordering information continued the uln2001a is a generalpurpose array and can be used with ttl and cmos technologies. Relay driver ic uln2003 is high voltage and high current integrated ic which used darlington array. Uln2003 relay driver datasheet, cross reference, circuit and application notes in pdf format. Looking at the data sheet for the uln2003a, its rated at 0. Uln2002a uln2003a uln2004a january 2017 document number. Uln2004an datasheet ti uln2004a, highvoltage, highcurrent.
Applications include relay drivers, hammer drivers, lamp drivers, display drivers. The product controls four independent relay driver. For example, a relay with a 5v coil can be driven directly from the rectified 120 vac or 230 vac line. Relay driver uln2003 relay driver ic electrical projects. Relay driver circuit using ic uln2003 and its working. Edgefx provides a video tutorial on relay driver uln2003 circuit ic pin description and used to drive relay switch on and off. Contact your local microchip sales representative or distributor for volume and. Get same day shipping, find new products every month, and feel confident with our low price guarantee. Dec, 2017 tpic2701, uln2001, uln2002, uln2004, l293d, motor driver shield. The maximum allowable power dissipation at any allowable ambient temperature is pd tjmax ta rthja. It is commonly used for applications such as relay drivers, motor, display drivers, led.
Uln2003 is nothing but a set of inverters which is there inside this ic. D relaydriver applications descriptionordering information. Uln2003 ic is one of the most commonly used motor driver ic. Uln2004an texas instruments discrete semiconductor. The hv9901 universal relay driver provides highefficiency driving for lowvoltage relays with supply voltages as high as 450v.
Uln2003lv 7channel relay and inductive load sink driver 1 features 3 description the uln2003lv is a lowvoltage and low power 1 7channel high current sink drivers upgrade oftis popular uln2003. Relay driver applications guide morningstars relay driver rd is a fully programmable 4channel logic controller that can be used to control mechanical or solidstate relays in an ac or dc power system. Morningstars relay driver is a logic module which provides high level system control functions such as highlow voltage alarms, load control and generator start. It provides up to 500ma of continuous load current,with wide input voltage operation from 50v max. But dedicated relay driver circuits integrated circuits are available which serve the purpose of relay driver ic. Current flow in a single coil latches the corresponding relay in its set or reset position. The uln2004an devices are npn pmic, manufactured by texas instruments,offered in 16dip package and operated over the extended 20c to 70c temperature range. The uln2803 ic consists of eight npn darlington pair which provides the proper current amplification required by the loads. Relay driver circuit using uln2003 and its applications. The max4896 8channel relay driver offers builtin inductive kickback protection, drive for latchingnonlatching or dual. For 100v otherwise interchangeable versions of the ulx2003a devices, see theslrs023 data sheet for the sn75468 and sn75469devices.
The a6rel12s internal relays are dual singlepole doublethrow. Uln2001, uln2002, uln2003, uln2004 maximum ratings 17 3 maximum ratings note. Uln2003 high voltage and current darlington transistor. Highvoltage highcurrent darlington transistor array, uln2004an datasheet, uln2004an circuit, uln2004an data sheet. Aug 02, 2011 the uln2803 comes in an 18pin ic configuration and includes eight 8 transistors. Uln2004 seven darlington arrays stmicroelectronics. This ic belongs to the family of uln200x ics and various types of this family interface to various. Integrated relay, inductive load driver this device is intended to replace an array of three to six discrete components with an integrated smt part. The relay driver is preconfigured at the factory with a default configuration as outlined below. If a different configuration is needed, a custom configuration will need to be programmed into the relay driver. As well as being an i2c addressable relay driver, it can also be used as simple logic to latching relay converter where low power drain is needed the state of the relays can. Uln2003 is nothing but a set of inverters which is there inside this ic as shown in picture below.
Uln2004an 50v, 7ch darlington transistor array with 15. Relay drivers gate drivers are available at mouser electronics. Relay, solenoid driver maxim integrated relay, solenoid. A pair of darlington is an arrangement of two bipolar transistors. The bl310 directly drives from 1 to 8 low power relays. Revised june 20041post office box 655303 dallas, texas 75265d 500marated collector current datasheet search, datasheets, datasheet search site for electronic components and semiconductors, integrated. Collector current versus saturation voltage 0 20406080 dc 0 100 200 300 400 500 ic. As well as being an i2c addressable relay driver, it can also be used as simple logic to latching relay converter where low power drain is needed the state of the relays can be. All trademarks are the property of their respective owners. It can be used to switch 3 to 6 vdc inductive loads such as relays, solenoids, incandescent lamps, and small dc motors without the need of a free. Single coil latching relays are directly driven with the set and reset pulse sequencing taken care of by the ic. The first one is for providing power to internal control circuitry. If needs be, i can stagger the which ones between the two ics to ensure ive only ever got 3 on per ic at any one time.
Looking at the diagram, im pretty sure i understand how the driver works however im rubbish at selecting a transistor. Relay driver uln2003 relay driver ic electrical projects ideas. Mdc3105 integrated relay, inductive load driver this device is intended to replace an array of three to six discrete components with an integrated smt part. Uln200x, ulq200x highvoltage, highcurrent darlington. The ic uln2003a comprises of 7npn darlington pairs as shown in the internal schematic diagram and is typically used to switch inductive loads dissipates voltage spikes if any using suppression diode and to drive stepper motors. Ensure that battery power has been disconnected before installing or removing the relay driver. Cs1107 single relay driver ic this asic provides up to 350 ma of drive current for driving a relay. We all know that the transistors are used to amplify the current but here darlington transistor pairs are used inside the ic to make the required amplification.
Relay driver ic uln2003 internal schematic diagram. Uln2004 datasheet, uln2004 pdf, uln2004 data sheet, uln2004 manual, uln2004 pdf, uln2004, datenblatt, electronics uln2004, alldatasheet, free, datasheet, datasheets. There are many ways to design relay driver circuits. Onchip diagnostic features include open and short circuit detection in the on state, duty cycle current limit control, and thermal shutdown.
Pin 10 is the common on the high side and would generally be connected to the positive of the voltage you are applying to the relay coil. A simple circuit that drives up to four singlecoil latching relays figure 2 includes a parallelinterface relay driver. The uln2002a is designed specifically for use with 14v to 25v pmos devices. This ic comes in handy when we need to drive high current loads using digital logic circuits like opmaps, timers, gates, arduino, pic, arm etc. We all know that the transistors are used to amplify the current but here darlington transistor pairs are used inside the ic.
The darlington pairscan be paralleled for higher current capability. For 100v otherwise interchangeable versions of the uln2003a and uln2004a, see the. The 28ybj48 stepper motor operates on 5vdc and has builtin reduction. There are other really drive ics available in marker also in different name. The uln2003 is a monolithic ic consists of seven npn darlington transistor pairs with high voltage and current capability. Uln2803 relay driver working operation embetronicx. Applications include relay drivers, hammerdrivers, lamp drivers, display drivers led and gas discharge, line drivers, and logic buffers. Uln2004an ti uln2004a, highvoltage, highcurrent darlington transistor array. These versatile devices are useful for driving a wide range of loads including solenoids, relay dc motors, led display filament lamps, thermal printheads and highpower buffers. The pin diagram of ic uln2003a is shown in the above figure which consists of 16 pins. Onchip diagnostic features include open and short circuit detection in the on state, duty cycle current limit. There are no user serviceable parts in the relay driver. Uln2803a darlington transistor array driver ic youtube. I shouldnt need to have more than 6 relays on at a time.
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