User Guide

PAMS
Technical Documentation
NSE–8/9
System Module
Page 2– 7
Issue 1 07/99
Maximum ratings
Table 1. Maximum ratings
Parameter Rating Condition
Battery voltage, idle mode –0.3 ... 3.6 V Max voltage at which the battery
can be charged by the phone
Charger input voltage –5.0 ... 18V Max voltage which activates the
PSCC input over–voltage protection
Temperature range
DC Characteristics
Table 2. Battery & DC/DC converter Voltages
Line Symbol Signal
Name
Min Typ Max Unit Comments
Battery Supply voltage Vb 1.9 2.4 3.6 V
Converter startup voltage Vb
1.2 1.4 1.6 V V109a release
level
1.4 1.6 1.85 V V105 start up
level
Converter shutdown voltage Vb 1.2 1.4 1.6 V V109a activation
level
Output over voltage protection Vdc_out 4.8 6.5 V V109b activation
level
Power on SW limit, normal mode Vb 2.15 V
Power on SW limit, acting dead
mode
Vb 2.15 V
Battery cut off voltage (SW) Vb 1.9 V
Table 3. DC/DC converter output voltages when in TX–mode
Line
Symbol
Condition **
Vcon1 Vcon2
Min Typ Max Unit @ Power level in
900MHz 1800MHz
Vdc_out
”L” ”L”
3.1 3.3 3.5 V ***
11 –19 5 – 15
current in TX
burst
@Vdc_out
min *
n/a *) n/a *) 1120 mArms
Current be-
tween burst
@3.3V
n/a *) n/a *) 150 mArms