User`s manual

BL160090 s Sinking and Sourcing Drivers
BL1600 Series Sinking and Sourcing Outputs
The BL1600 Series controllers are normally supplied with ULN2003
sinking drivers. Figure D-1 shows a typical sinking driver output configu-
ration.
Sourcing outputs are possible by replacing the factory-installed sinking
driver chips with sourcing output drivers (UDN2985). The UDN2985
sourcing driver chip is capable of sourcing a maximum of 75 mA per
output.
ULN2003
K
External
Load
Freewheel
Diode
+DC
I # 500 mA/channel
Flyback
Current Path
V
SAT
# 1.6 V DC
Figure D-1. BL1600 Sinking Driver Output