Features
ä Complete bq2018 circuit
ä Combines the bq2018, voltage regulator, sense
resistor, and backup capacitor on a single PCB
ä Works for any battery pack chemistry or capacity
ä Communicates charge/discharge information to a
host with a single-wire interface
ä Direct connections for the pack cells and
communications port
General Description
The DM2018 Power Minder Demonstration Module is a
typical implementation for the bq2018 Power Minder
IC. The DM2018 incorporates a bq2018 Power Minder
IC, supply voltage regulator, sense resistor, and backup
capacitor on a small circuit board.
The module pro-
vides direct connections for the positive and negative
terminals of the series cells in the battery pack, and
can fit in the crevice formed by two adjacent cells. The
DM2018 allows a battery pack to be equipped easily
with bq2018 electronics for evaluation of the IC in the
application.
Pin Descriptions
BAT+
Battery positive/pack positive
BAT-
Battery negative
HDQ
Communications port
PACK-
Pack negative
WAKE
Wakeup output
RBI
Register backup input
VCC
bq2018 supply voltage
1
bq2018 Power Minder™
Demonstration Module
DM2018
SLUU064 - APRIL 2000
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