Sony Ericsson GM-41 Phase II, Integrator'S Manual

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MANUAL 15(51)
Document number Revision
7/198 17-LXE 108 566 Uen A
Note: Any hard copy of this document is for reference only.
Due to template and application dependencies the header and footer may fail to display correct data. It is the
responsibility of the user to ensure that they have a correct and valid version. Any outdated hard copy is invalid and must be removed from possible use.
2.3.2.2 VCC_AUX
Limits
Parameter Symbol Condition
Minimum Nominal Maximum
Units
V
IN
4.5 5.0 5.5 Volt
0 – 4kHz 600
V
ripple
>4kHz 240
mV
Peak transmit
Period 4.6ms
Pulse width 542us
2.0
3
A
In-Rush current See VCC_MAIN above
Average transmit current
using 1 timeslot
250
Average transmit current
using 2 timeslots
4
500
mA
RMS
Idle 150 200 μ A
VCC_AUX
Tx power
amplifier
supply
voltage.
I
IN
Power down 0.1 1 μ A
Table 5: VCC_AUX Electrical Parameters
2.3.2.3 VRTC
VRTC is a bi-directional power supply for the real time clock inside the module. The module will charge an external
backup capacitor while MODULE_PWR_EN_B is held low. It is also possible for the application to supply the
VRTC through a regulator. If the application use the external regulator solution it should be noted that the module
will still provide the supply voltage on VRTC when powered on. The external regulator solution must be designed
with this in mind.
This signal can be left open if the application does not require that the RTC be operational while the phone module
is powered off.
Limits
Parameter Symbol Condition
Minimum Nominal Maximum
Units
V
IN
normal operation 1.6 1.8 2.0 Volt
Input voltage
V
IN
backup operation 1.0 1.8 2.0 Volt
I
IN
1 5 μ A
Input current
I
Leak
0.1 μ A
Output
current
I
OUT
Module charging external
backup capacitor
6.5 mA
External
capacitance
5
C
Backup
Super Cap 0.3 F
Table 6: VRTC Electrical Parameters
3
This does not include In-Rush current at startup. Look at VCC-MAIN for combined In-Rush current specification.
4
This is currently not supported.
5
This capacitor must be implemented in the application for the RTC to work properly, unless an external regulator
is used.