Datasheet 搜索 > 分立器件 > Toshiba（东芝） > ULN2803AFWG 数据手册 > ULN2803AFWG 产品设计参考手册 1/1 页
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ULN2803AFWG 产品设计参考手册 - Toshiba（东芝）
制造商:
Toshiba（东芝）
分类:
分立器件
封装:
SOIC-18
描述:
ULN2803AFWG
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
原理图在P1
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ULN2803AFWG数据手册
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AA BB CC DD EE FF GG HH II JJ
AA BB CC DD EE FF GG HH II JJ
CIRC-19
Transistor Arrays
(ULN2803A)
to 5v
to Gnd
Transistor Arrays
(ULN2803A)
The Theory & Code
The Circuit
.: Instructions: print out, cut out, get making :.
.: for more details visit: http://tinyurl.com/mxljb4 :.
The Layout Sheet
the basics
The Arduino's digital pins are great for controlling small loads like LEDs,
However if you want to control something bigger transistors are required. A
ULN2803A is a really hand IC (integrated circuit) as it houses 8 high current
transistors in a single package.
to use
Connect the input pin to a digital pin on your Arduino. Then connect the
negative lead of your load to the output. Finally connect the positive lead of
your load to its supply voltage (0.5-30 volts). To turn your load on set the
digital pin HIGH. To turn your load off pull the pin to LOW or set it to INPUT.
flyback diodes
The ULN2803A also has fly-back diodes built in. This allows you to drive
inductive loads with it (motors and relays) without worrying about damaging
your Arduino.
.: ULN2803A Datasheet http://tinyurl.com/mv2598 :.
The Pin-out
in 1-1
in 2-2
in 3-3
in 4-4
in 5-5
in 6-6
in 7-7
in 8-8
18-out 1
17-out 2
16-out 3
15-out 4
14-out 5
13-out 6
12-out 7
11-out 8
ULN2803A
GND-9
10-common
1-in 1
2-in 2
3-in 3
4-in 4
5-in 5
6-in 6
7-in 7
8-in 8
out 1-18
out 2-17
out 3-16
out 4-15
out 5-14
out 6-13
out 7-12
out 8-11
ULN2803A
IC
ULN2803A
9-GND
common-10
to pin 2
to pin 3
to pin 4
to pin 5
to pin 6
to pin 7
to pin 8
to pin 9
load 8
load 7
load 6
load 5
load 4
load 3
load 2
load 1
to
supply
voltage
(must share
common ground)
if
using
5 volts
There is a half moon
cutout, this goes at the bottom
The Limits
.:Current Per Output:.
500 mA
.:Power Dissipation:.
1.47 W
(this means under heavy loads the chip
will get quite hot and may need additional
heatsinking)
The Schematic
0
1
2
3
4
5
6
7
gnd
ULN2803A
0
1
2
3
4
5
6
7
comm
C
E
B
in
out
C
E
B
C
E
B
C
E
B
C
E
B
C
E
B
C
E
B
C
E
B
load
load
load
load
load
load
load
load
supply voltage
gnd
(ground) (-)
pin 9
pin 8
pin 7
pin 6
pin 5
pin 4
pin 3
pin 2
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