User Guide

PAMS
Technical Documentation
NME–3
Technical Information
Page 6
Issue 1 10/99
Power Distribution
Power is supplied to the system via the System–Cable or SCM5 (longer
one). The Figure below shows an overview of Power Supply and
Protection Circuits
Figure 1. Power Supply Block Diagram
LineFilter
&
12V Supply
Carbat+
Carbat–
TVS
8V
Regulator
8V Supply
3.8V Supply
Post–Regulator /
LoPower Bypass
Feedback
Si Switch
LoPower
Regulator
Supply
Monitor
Aux
Protect
PowerOn
_OVERVOLTAGE
_POWERFAIL
_POWERCRITICAL
Table 1. Supply Voltages and Power Consumption
Pin / Conn. Line Symbol Minimum Typical /
Nominal
Maximum Unit / Notes
1/System
17/System
VBATT 0
5
10.8
16
13.5
5
10.8
16
28
V/ no operation
V/ reduced operation
V/ nomal operation
V/ no Operation
VBATT 1.5
150
4
500
1
A Callmode
mA Idle mode
mA Powerdown mode