Nokia NSB-7 Series Service Manual page 34

NSB-7
System Module
NOTE: COBBA regulator is off in SLEEP mode. Its output pin may be fed from V
in SLEEP mode by setting bit RFReg(5) to'1' (default).
CCONT includes also five additional 2.8V regulators providing power to the RF section.
These regulators can be controlled either by the direct control signals from MAD or by
the RF regulator control register in CCONT which MAD can update. Below are the listed
the MAD control lines and the regulators they are controlling.
TxPwr controls VTX regulator (VR5)
-
RxPwr controls VRX regulator (VR2)
-
- SynthPwr controls all the rf regulators except VR1
- VCXOPwr controls VXO regulator (VR1)
CCONT generates also a 1.5 V reference voltage VREF to COBBA. The VREF voltage is also
used as a reference to some of the CCONT A/D converters.
In addition to the above mentioned signals MAD includes also TXP control signal which
goes to HAGAR power control block. The transmitter power control TXC is led from
COBBA to HAGAR.
Characteristics
Output current VR1-VR6
Output current VR7
Depends on external BJT
Output current VR7BASE
Base current limit
Output current VBB On
Current limit 250mA
Output current VBB Sleep
Current limit 5mA
Output voltage VR1-VR7
Output voltage VBB
Output voltage V2V
(VCORE)
Output voltage V2V
(VCORE) tolerance
Line regulation (not VBB)
Page 20
Condition
Vout@2.8V
Vout@2.8V
Vout@2.8V
Vout@2.8V
Vout@2.8V
over full temperature, input
voltage and load range
over full temperature, input
voltage and load range
Programmable:
Vout=1.3V+225mV*n
N = 0,1,2,3,4,5,6
F v 10kHz, 2)
VBAT>3.15V
ãNokia Mobile Phones Ltd.
PAMS Technical Documentation
Min Typ Max
100
150
-10
125
1
2.7 2.8 2.85
2.7 2.8 2.85
1.30 2.65
-5 +5
49
BB
Unit
mA
mA
mA
mA
mA
V
V
V
%
DB
Issue 1 06/00