Open-Q™ 820 (APQ8096) / 820Pro (APQ8096SG) µSOM Development Kit User Guide Version 1.4
23
Copyright Intrinsyc Technologies Corporation
3.8.4 Battery Header J300
Figure 6 J300 Battery Header
The Open-Q 820 / 820Pro µSOM development platform can also power the µSOM with a
single cell Lithium-Ion Polymer (LiPo) battery pack which connects to header J300. The
purpose of this header is to be used by the end user to develop a battery charging solution,
including battery characterization. Intrinsyc recommends using the AA Portable Power
Corp’s CU-J479-V2 / 1ICP7/55/85 Lithium ion battery pack. This is a single cell pack with a
nominal voltage of 3.8V and a capacity of 3200mAh (11.8 Wh, 5A rate). If user intends to
use a different battery, please note the pin outs on this battery header.
Description
Signal
Pin
Note
µSOM Battery positive supply terminal
VBAT Plus (VBAT+)
J300[1]
µSOM Battery positive supply terminal
VBAT Plus (VBAT+)
J300[2]
N/C
N/C
J300[3]
Internal battery pack temperature
BATT_THERM (The
recommended battery has
a 10K Ohm thermistor)
J300[4]
Depopulate R197
if battery selected
has a 10K ohm
thermistor
µSOM Battery negative supply terminal
VBAT Minus(VBAT-)
J300[5]
µSOM Battery negative supply terminal
VBAT Minus(VBAT-)
J300[6]
Please note that the battery only powers the µSOM. To ensure proper functionality of the
development kit, the 12V power supply must be attached at J21. When a battery is not in
use, the TI step down converter U400 is used to power the µSOM.
Note that the software that is shipped with the development kit does NOT support battery
charging. Please visit the Intrinsyc support site and follow the instructions for preparing the
platform to support battery charging.
