User Guide

PAMS
Technical Documentation
NME–3
Technical Information
Page 31
Issue 1 10/99
Switching SIM power supply
There is a switched mode supply for the SIM–interface. SIM voltage is
selected via serial IO. The 5V SMR can be switched on independently of
the SIM voltage selection, but can’t be switched off when VSIM voltage
value is set to 5V.
Characteristics Condition Min Typ Max Unit
Output current VR1–VR6 Vout@2.8V 100 mA
Output current VR7
Depends on external BJT
Vout@2.8V 150 mA
Output current VR7BASE
Base current limit
Vout@2.8V –10 mA
Output current VBB On
Current limit 250mA
Output current VBB
Sleep
Current limit 5mA
Vout@2.8V
Vout@2.8V
125
1
mA
mA
Output voltage VR1–VR7 over full tempera-
ture, input voltage
and load range
2.7 2.8 2.85 V
Output voltage VBB over full tempera-
ture, input voltage
and load range
2.7 2.8 2.85 V
Line regulation (not
VBB)
F v 10kHz,
2) VBAT>3.15V
49 dB
Line regulation (not
VBB)
F v 100kHz,
2) VBAT>3.15v
40 dB
Line regulation VBB F v 100kHz
2)
30 dB
Load regulation T = 25_C 0.6 1 mV/mA
Supply current (each reg-
ulator) VR1...VR7
ON mode I
out
/60
+330
I
out
/10
+540
mA
Supply current VBB ON mode I
out
/60
+
250
I
out
/10
+
400
mA
Supply current VBB SLEEP mode I
out
/60
+
100
I
out
/10
+
150
mA
CCONT use in CD949
The CCONT is the Powersupply asic in the DCT3 architecture. The main
difference between the HD940 and the CD949 CCONT application is that
in CD949 all the charging and battery related signals are disabled. The
EAD ADC input is used for backlightdimming. The PowerOnX pulse for
the CCONT is generated by 3 different sources