tca62724fmg Marktech Optoelectronics, tca62724fmg Datasheet - Page 10

• Manufacturer Part Number: tca62724fmg
• Description: Three-channel Constant-current Led Driver
• Manufacturer: Marktech Optoelectronics

Setting of Output Current (Reference Data)
Output Voltage – Output Current (Reference Data)
The output current is set by the resistance connected between terminal REXT and GND.
The output current can be set according to the following expression.
160
140
120
100
180
160
140
120
100
80
60
40
20
80
60
40
20
0
0
0.0
0
I OUT (mA) =
20
0.5
40
1.0
IOUT vs REXT
V DS vs IOUT
REXT (k )
REXT k

1.17 (V)
V DS  V
10
60
1.5
× 460
80
2.0
REXT = 110 k
REXT = 11 k
T
V
REXT = 3.6 k
opr
DS
100
é25°C
é1 V
2.5
120
3.0
TCA62724FMG
2005-04-19