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MBI5168
8-bit Constant Current LED Sink Driver
September 2003, V0.3
- 2 -
9
10
11
12
13
14
15
16
SDO
R-EXT
VDD
OE
5
OUT
4
OUT
6
OUT
7
OUT
1
2
3
4
5
6
7
8
0
OUT
3
OUT
2
OUT
1
OUT
CLK
LE
SDI
GND
Terminal Description
Pin No.
Pin Name
Function
1
GND
Ground terminal for control logic and
current sinks
2
SDI
Serial-data input to the shift register
3
CLK
Clock input terminal for data shift on
rising edge
4
LE
Data strobe input terminal
Serial data is transferred to the
respective latch when LE is high. The
data is latched when LE goes low.
5-12
OUT0 ~
7
OUT
Constant current output terminals
13
OE
Output enable terminal
When (active) low, the output drivers
are enabled; when high, all output
drivers are turned OFF (blanked).
14
SDO
Serial-data output to the following SDI
of next driver IC
15
R-EXT
Input terminal used to connect an
external resistor for setting up output
current for all output channels
16
VDD
5V supply voltage terminal
Block Diagram
8-Bit Shift Register
8-Bit Output Latch
IO Regulator
8-Bit Output Driver
R-EXT
OE
LE
SDI
CLK
SDO
OUT7
OUT0
8
8
OUT1
VDD
GND
OUT6
Pin Description
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