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dc1697af
DEMO MANUAL DC1697A
HARDWARE SETUP
Due to having separate V
DD
and SENSE pins, the LTC2945
offers great flexibility in terms of supply options. The fol-
lowing are some examples of how to connect and set up the
DC1697A based on different supply input configurations.
In order for the DC1697A to function, power must be
applied. If the VDD_SEL jumper is set to VIN, then V
DD
and
V
IN
are connected. At this point, as long as 4V to 80V is
provided at VIN the part will function correctly. However,
should VDD_SEL be tied to EXTVDD then a separate voltage
source should be provided at the EXTVDD turret. Should
VDD_SEL be tied to INTVCC then, if VIN is less than 7V,
a 5V supply should be provided at the INTVCC turret. This
is illustrated in the following figures.
If the system is connected properly, the INTVCC green
LED should be lit and the
ALERT
red LED should be off.
Figure 2. DC1797A Is Powered from Supply Being Monitored
Jumper VDD_SEL Set to VIN to Tie V
DD
to VIN
4V TO 80V
LOAD
dc1697A F02
