Uln2803 pin configuration pdf

Introduction to uln2803 pin configuation, how to use it. Uln2803a stmicroelectronics discrete semiconductor products. Absolute maximum ratings symbol parameter value unit vo output voltage 50 v vi input voltage for uln2802a uln2803a uln2804a 30 v. The darlington transistor configuration guarantees a significant voltage drop in the device. The device consists of eight npn darlington pairs that feature highvoltage outputs with commoncathode clamp diodes for switching inductive loads. From the uln2003 datasheet this chip is very convenient to use as it provides everything needed. The maximum allowable power dissipation at any allowable ambient temperature is pd tjmax ta rthja. Uln2803 pdf, uln2803 description, uln2803 datasheets, uln2803.

Uln2802, uln2803, uln2803smd, uln2804 syc electronica. Uln2803 pin configuration datasheet, cross reference, circuit and application notes in pdf format. Ultraprecision operational amplifier analog devices. The ground pin, as usual is grounded and the usage of common pin is optional. Apr 06, 2019 the uln2803a is an array of darlington transistors, which is a configuration of two transistors shown in figure 1 that allow for a very high current amplification. Uln2803,04apgafwg 2 20121126 schematics each driver uln2803apg afwg uln2804apg afwg note. Uln2803 datasheet, uln2803 pdf, uln2803 data sheet, uln2803 manual, uln2803 pdf, uln2803, datenblatt, electronics uln2803, alldatasheet, free, datasheet, datasheets. Pin 10, called com, of the uln2803 is still connected to the arduino s v cc. Uln2803 is an 18 pin ic which will be available in various packages. 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. The uln2803 ic consists of eight npn darlington pair which provides the proper current amplification required by the loads. Uln2803a bipolar bjt transistor array 8 npn darlington 50v 500ma 2.

Uln2803 doesnt have vcc pin, how im suppose to use it. Uln2001, uln2002, uln2003, uln2004 maximum ratings 17 3 maximum ratings note. Jun 19, 2017 bc547 pins configuration the properly labeled pin configuration diagram of bc 547 along with its animation is shown in the figure given below. What is that symbol between the coontroller and the uln2803 pin 1. Uln2803 uln2804 octal high voltage, high current darlington. Uln2803apg,uln2803afwg,uln2804apg,uln2804afwg manufactured. The device consists of eight npn darlington pairs that feature highvoltage highvoltage outputs. 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.

Uln200x, ulq200x highvoltage, highcurrent darlington. In this device, eight darlington pairs of npn configuration are present that have the feature of high voltage outputs along with the commoncathode clamp diodes that is used to switch inductive loads. Ive used an array of eline highperformance transistors ztx450 before now to get 8 drivers into the same space as one 16 pin dil package, which. For these seven darlington pairs we have seven input and output pins. Darlington array 8npn, dip18, 50v online from elcodis, view and download uln2803apg pdf datasheet, transistors bjt arrays specifications. Uln2803a darlington transistor arrays 1 features 3 description the uln2803a device is a highvoltage, highcurrent 1 500marated collector current single output darlington transistor array. Using shift register 74hc595 with uln2803, udn2981 and bc327.

Uln2803 datasheet, uln2803 datasheets, uln2803 pdf, uln2803 circuit. Hello, all in many situations in your projects with microcontrollers you can use a shift register like 74hc595 directly with leds and displays, but if you check the datasheet you will see that need to take care with the maximum current on each o. Pin configuration sot1081 so14, sot3371 ssop14 and sot4021 tssop14 gnd1 transparent top view 2y 3a 2b 3b 2a 4y 1y 4a 1b 4b g n d 3 y 1 a v c c 6 9 5 10 4 1 3 12 2 7 8 1 1 4 terminal 1 index area 74hc08 74hct08 aaa004036 1 this is not a ground pin. Uln2001, uln2002 uln2003, uln2004 stmicroelectronics. Every output will be low unless e1 and e2 are low and. This means that, by drawing only a very small amount of current from the input in this case, the io pin, the device can provide a much larger amount of current, which is drawn. The uln2803a is a highvoltage, highcurrent darlington transistor array. Sep 02, 2018 hey uln2803 datasheet want to use the uln to interface uln2803 datasheet high current devices.

The uln2803a datasheet specifies that it is a highvoltage, highcurrent darlington transistor array. Lm393b, lm2903b, lm193, lm293, lm393 and lm2903 dual. 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. In practice you cant take more than 200ma per channel without risking overloading the chip. The device features three enable inputs e1 and e2 and e3. The io 24 uln2803 switch board shown below in diagram 1 is a very useful. Uln2803a datasheet, uln2803a pdf, uln2803a data sheet, uln2803a manual, uln2803a pdf, uln2803a, datenblatt, electronics uln2803a, alldatasheet, free, datasheet. Pricing and availability on millions of electronic components from digikey electronics. Uln2803 datasheet eight darlington arrays allegro, uln2803a datasheet, uln2803 pdf, uln2803 pinout, uln2803 manual, uln2803 schematic, uln2803 equivalent. Pin connection top view type input base resistor designation uln2803apg afwg 2. Pin connections top view docid1536 rev 4 514 uln2801a, uln2802a, uln2803a, uln2804a maximum ratings 14 3 maximum ratings table 2. Uln2803 relay driver working operation embetronicx. Whereas the l293d effectively has four outputs whose polarity can be reversed, the uln2803 has eight outputs that amplify the weak signals from the raspberry pi gpio pins allowing them to switch much higher currents.

It has seven darlington pairs inside, where each can drive loads up to 50v and 500ma. The io 24 uln2803 switch board shown below in diagram 1 is a very useful accessory board that allows much higher voltage and current devices to be interfaced to the low level logic provided by the io24 modules. Jan 02, 2010 that way when a logic 1 was sent to pin 1 of the uln2803 it would switch on the darlington transistors. Using a uln2803a to control a dc motor techtutorialsx. Aug 02, 2011 the uln2803 comes in an 18 pin ic configuration and includes eight 8 transistors.

There is no electrical or mechanical requirement to solder the pad. Sep 16, 2011 the uln2803 comes in an 18 pin ic configuration and includes eight 8 transistors. Uln2803,04apgafwg 1 20101203 toshiba bipolar digital integrated circuit silicon monolithic uln2803apg,uln2803afwg,uln2804apg,uln2804afwg manufactured by toshiba malaysia 8ch darlington sink driver the uln2803apg afwg series are high. Jul 19, 2016 uln2803 datasheet eight darlington arrays allegro, uln2803a datasheet, uln2803 pdf, uln2803 pinout, uln2803 manual, uln2803 schematic, uln2803 equivalent. Darlington pairs transistors 101 adafruit learning system.