LE940B6 HW User Guide
Rev. 2.02
Page 87 of 111
2020-01-10
Fuel Gauge (TBD)
The LE940B6 module can optionally support an external Fuel Gauge solution. In this
case, an external IC that is capable of measuring the current flow in and out of the module
must be added on the carrier board.
Figure 24 shows an example of a typical connectivity of such an external fuel gauge to the
LE940B6 module.
Detailed design - TBD
Figure 24: Fuel Gauge Connectivity Example
eFuse
The LE940B6 module needs 1.8 +/- 0.05V applied on Pad VPP(H17) for eFuses to be
programmed.
The fuse voltage must be applied to VPP(H17) prior to the fuse script being started, and
must be removed after the fuse operation has been completed.
WARNING:
Fuse voltage must never be supplied when the module is not powered up.
Telit Module
VBATT_IN
I2C
GPIO (Wake up)
I2C
Alert Out
SENSE-
SENSE+
HOST Power Supply
50mohm Rsense
High side current sensing
Provided
to
Dekra
under
NDA
Distribution
is
Prohibited
except
for
Dekra
employees
with
a Need
to
know
