User Guide

PAMS
Technical Documentation
NSE–8/9
System Module
Page 2– 8
Issue 1 07/99
Table 3. DC/DC converter output voltages when in TX–mode (continued)
@ Power level in
900MHz 1800MHz
UnitMaxTypMinCondition **
Vcon1 Vcon2
Line
Symbol
Vdc_out
”H” ”L”
3.2 3.4 3.6 V ***
9 –10 3 – 4
current in TX
burst
@Vdc_out
min *
n/a *) n/a *) 1360 mArms
Current be-
tween TX
burst
n/a *) n/a *) 150 mArms
Vdc_out
”L” ”H”
3.7 3.9 4.1 V ***
7 – 8 0 – 2
current in TX
burst
@Vdc_out
min *
n/a *) n/a *) 2650 mArms
Current be-
tween TX
burst
n/a *) n/a *) 150 mArms
Vdc_out
”H” ”H”
3.8 4.0 4.2 V ***
5 – 6 N/A
current in TX
burst
@Vdc_out
min *
n/a *) n/a *) 2900 mArms
Current be-
tween TX
burst
n/a *) n/a *) 150 mArms
Vdc_out ”H” ”H” 3.8 4.0 4.2 V for buzzer &
vibra alerting
*) Note: Maximum load of Vdc_out during TX burst, when Vdc_out is not allowed to
drop below 3.05V, Cout is 20% below nominal and remaining load besides PA is max.
150mA.
**) Note: The SW control makes converter voltage step up before PA power
consumption level is increased, and makes converter voltage stay up until PA power
consumption is lowered.
***) Note: Voltage with no load, voltage will drop during burst, but with the stated current
voltage will not drop below 3.05V.