Sony Ericsson Mobile Communications Inc. TR-505-A2 Manuale Utente
DM15/25 Integrator’s Manual
14 OF 38
4.1.3.1 Power Consumption
4.1.3.1.1 Transmit Mode
Power class selection
VCC_5V (peak)
VCC_12V (peak)
Heat Sink
Busrt Mode Class I
AMPS Class II
TDMA Class II
AMPS Class II
TDMA Class II
600-ma
1,300-ma
9
o
C/watt
recommended
Busrt Mode Class I
AMPS Class IV
TDMA Class IV
AMPS Class IV
TDMA Class IV
1,000-ma
1,300-ma
Not required
Table 2 Power Consumption in Transmit/talk mode
4.1.3.1.2 Standby Mode
DC current in mA
AMPS Mode
TDMA Mode
PCS Mode
Average
45
45
35
Table 3 Power Consumption in Standby Mode
4.1.3.1.3 Sleep Mode (Minimum DC Power consumption)
A power down or “sleep mode” is available in which the module is placed in a low power
consumption state under control of the host application. In this mode, the unit consumes
approximately 30 uA of current as measured from the VCC_5V supply input on pins 29 and 30 of
the system connector. The MODULE_PWR_EN_B (WAKE) signal, on pin 8 of the system
connector is tied to VCC_5V through a 330k
consumption state under control of the host application. In this mode, the unit consumes
approximately 30 uA of current as measured from the VCC_5V supply input on pins 29 and 30 of
the system connector. The MODULE_PWR_EN_B (WAKE) signal, on pin 8 of the system
connector is tied to VCC_5V through a 330k
Ω
resistor and therefore needs to be driven low by an
external open collector transistor in order to turn the module off. Turning off the external open
collector transistor causes the MODULE_PWR_EN_B (WAKE) signal to float, which returns the
unit to full operation, although there may be some delay (3-4 seconds) while the module
reestablishes cellular service with the cellular network.
collector transistor causes the MODULE_PWR_EN_B (WAKE) signal to float, which returns the
unit to full operation, although there may be some delay (3-4 seconds) while the module
reestablishes cellular service with the cellular network.
4.1.3.2 Power Supply, Ground and Signal Pins
The signals related to the power supply are: VCC_12, 13.8 V
±
20%, 1.3A max power supply,
connected to the pin numbers 25, 27 and 28 and needed for 3 Watt burst applications and VCC_5, 5
volt
volt
±
13.3% regulated, 1A max (1A peak during TDMA burst) regulated power supply connected
to pin numbers 29 and 30.
Following is a list of the power supply requirements and signal pinout`: