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看到许多朋友讨论LED背光的事情,奉献一LED背光电源板

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2. Electronic characteristic
   1.1 Temperature & Humidity
Operating:-10℃ to +45℃
Storage: -20℃ to +80℃
OPERATING & STORAGE HUMIDITY :10%~85%

   1.2 IN PUT

INPUT ITEM MIN TYPICAL MAX UNIT REMARK
VOLTAGE 18 24 26 VDC
CURRENT --- --- A
ON/OFF 3.5 4 5.0 VDC 0-2.8V  OFF
BL(R,G,B) 20% --- 100% PWM DUTY PWM frequency=200-250HZ
VPP=4.5-5.0V MAX

   1.3 OUT PUT   

OUTPUT ITEM MIN TYPICAL MAX UNIT REMARK
CURRENT 100 342 360 mA DC
RIPPLE --- 150 500 mV
EFFICIENCY 75 80 ---- %


1.4 PROTECTION
14.1 OVER VOLTAGE PROTECTION-
14.2 OPVER CURRENT PROTECTION  ---365mA max
  14.3 SHORT CIRCUIT PROTECTION PASS
2. Connection Description

2.1 IN PUT CDONNECTION  :CN1

PIN NO SYMBOL DESCRIPTION REMARK
1,2,3,4 VCC 24V  DC IN
5,6,7,8 GND       POWER GROUND
9 ON/OOFF Power ON/OFF CONTROL
10 RBL RED brightness  control
11 GBL GREEN brightness  control
12 BBL BLUE brightness  control

   2.2 OUT PUT CDONNECTION
CN101-----CNB01
  
PIN NO SYMBOL DESCRIPTION REMARK
1 VO TO LED ANODE
2 RETURN       TO LED NEGATIVE


LOCATION LED COLOUR LED TOTAL VOLTAGE REMARK
CN101 R  LED 18 25-45V 100mA-350mA
CN201 G  LED 18 25-65V 100mA-350mA
CN301 G  LED 18 25-65V 100mA-350mA
CN401 B  LED 18 25-65V 100mA-350mA
CN501 R  LED 18 25-45V 100mA-350mA
CN601 G  LED 18 25-65V 100mA-350mA
CN701 G  LED 18 25-65V 100mA-350mA
CN801 B  LED 18 25-65V 100mA-350mA
CNA01 R  LED 10 10-24V 100mA-350mA
CN901 G  LED 18 25-65V 100mA-350mA
CNB01 B  LED 10 25-36V 100mA-350mA
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ledfriend
LV.1
2
2006-11-28 17:54
在学习.顶!
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jacky_ccf
LV.4
3
2007-01-05 17:40
我现在也已经做出了一个LCD TV  的LED背光驱动器,我们的是10组输出,每组可驱动24--40PCS 1W 的LED 电流稳定在350mA+-15mA,其他功能也与你上面的差不多,可实现PWM调光100--300Hz ,ON/OFF功能,及DC0--5V 线性调光, 总体最小效率可达到80%.
0
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robby.guo
LV.1
4
2007-01-11 17:12
1168506577.pdf
拿我们BITEK的BIT3251的图示出来秀一下.
负载电流超过300mA,可点3串10并以上灯串.
深圳裕泰电子,0755-88315678;robby.guo@frontek.com.tw;glxggt@hotmail.com;郭林祥
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