MBI1009 Datasheet, PDF (6/8 Pages) List of Unclassifed Manufacturers – 3-Channel RGB LED Lamp Driver

MBI1009
Application Information
Typical Application Circuit
3-Channel RGB LED Lamp Driver
VLED
Controller
3.3V or 5.0V
V_DD
/OE
LE
CLK
SDI
OUT0 / GREEN OUT1 / RED OUT2 / BLUE
MBI1009
R-EXT
SDO
GND
3.6 KΩ
Current Setting for GREEN, RED, and BLUE Output Ports
The output currents of OUT0 / GREEN, OUT1 / RED, and OUT2 / BLUE are determined by an external resistor and
the 16-bit Brightness Control Code, both set by users.
That is:
I_OUT,GREEN = G_GREEN x I (Rext);
I_OUT,RED = G_RED x I (Rext);
I_OUT,BLUE = G_BLUE x I (Rext);
where I (Rext) is the reference current set by the external resistor Rext
and G_GREEN, G_RED, G_BLUE are current gains for output channels OUT0 / GREEN, OUT1 / RED, and OUT2 / BLUE ,
respectively.
I (Rext) (Ta = 25°C, V_DD = 3.3V) – A reference table
Rext
I (Rext) in mA
Vout= 0.1V Vout= 0.2V Vout= 0.3V Vout= 0.4V Vout= 0.5V Vout= 0.6V Vout= 0.7V Vout= 0.8V Vout= 0.9V Vout= 1.0V
4571Ω
3.05
4.01
4.19
4.26
4.26
4.26
4.26
4.26
4.26
4.26
3600Ω
3.64
5.07
5.4
5.52
5.52
5.52
5.52
5.52
5.52
5.52
2952Ω
4.14
6.08
6.62
6.80
6.80
6.80
6.80
6.80
6.80
6.80
I (Rext) (Ta = 25°C, V_DD = 5V) – A reference table
Rext
I (Rext) in mA
Vout= 0.1V Vout= 0.2V Vout= 0.3V Vout= 0.4V Vout= 0.5V Vout= 0.6V Vout= 0.7V Vout= 0.8V Vout= 0.9V Vout= 1.0V
4571Ω
2.86
3.65
3.79
3.84
3.84
3.84
3.84
3.84
3.84
3.84
3600Ω
3.40
4.57
4.81
4.88
4.88
4.88
4.88
4.88
4.88
4.88
2952Ω
3.89
5.45
5.84
5.94
5.94
5.94
5.94
5.94
5.94
5.94
-6-
April 2004, V0.6