DD313 SITI [Silicon Touch Technology Inc.], DD313 Datasheet - Page 7

• Manufacturer Part Number: DD313
• Description: 3-CHANNEL HIGH CONSTANT CURRENT LED DRIVER with ERROR DETECTION
• Manufacturer: SITI [Silicon Touch Technology Inc.]

Constant-Current Output
the REXT(R, G, B) pin and GND individually. Varying the resistor value can adjust the current up to
500mA. Notice that the output current is a little increasing or decreasing until the device
temperature and ambient temperature are balanced. The maximum power dissipation of the
determined external resistor should be large enough than the actual power consumption:
following equation:
3-CHANNEL HIGH CONSTANT CURRENT LED DRIVER
. 0
( 5
V ×
Constant-current value of each output channel is set by an external resistor connected between
)
Iout
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC
新竹市科學園區展業一路 9 號 7 樓之 1
Tel：[phone]
9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C.
(
A
)
600
500
400
300
200
100
550
500
450
400
350
300
250
200
150
100
50
0
0
need to be considered. Approximate output current value can be calculated by
0
0
0.2
Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement.
Fax：[phone]
1
未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任
0.4
2
Output Current as a Function of Output Voltage
0.6
Output Current as a Function of REXT value
0.8
3
.
1
4
1.2
Vout ( Volt )
REXT( Ω )
5
1.4
1.6
6
1.8
7
2
2.2
8
Vout = 1.0 V
Version: A.003
2.4
9
2.6
10
2.8
11
3
DD313
Page 6