User Guide

System Module LG4 and Grip Module LS4 CCS Technical Documentation
Page 60 ¤Nokia Corporation Issue 2 11/02
Figure 37: Electrical-implementation of the current gauge
Note: BATGND is the ground of the grip, not charger ground
TEST Ground 6
IPWM Vbat active HIGH Output AEM 7
Sense - Transceiver Vbat 8
Battery
8
7
6
5
1
2
3
4
B
a
t
t
e
r
y
C
o
n
NATIONAL's
Current meter
component
LM3822
B
o
B
o
C
o
n
Vbat
IPWM
ISD
100n
100n
BATGND