Power Supply Ratings - SimCom SIM900 Hardware Design

SIM900 Hardware Design

5.3 Power Supply Ratings

Table 28 : SIM900 power supply ratings
Parameter Description
VBAT Supply voltage
Voltage drop
during transmit
burst
Voltage ripple
I Average
VBAT
current
SIM900_HD_V1.05
Conditions
Voltage must stay within the min/max
values, including voltage drop, ripple, and
spikes.
Normal condition, power control level for
Pout max
Normal condition, power control level for
Pout max
@ f<200kHz
@ f>200kHz
supply POWER DOWN mode
SLEEP mode ( BS-PA-MFRMS=9 )
( BS-PA-MFRMS=5 )
( BS-PA-MFRMS=2 )
IDLE mode
GSM 850
EGSM 900
DCS1800
PCS1900
TALK mode
GSM 850
EGSM 900
DCS1800
PCS1900
DATA mode, GPRS (3 Rx,2Tx)
GSM 850
EGSM 900
DCS1800
PCS1900
DATA mode, GPRS (4 Rx,1Tx)
GSM 850
EGSM 900
DCS1800
PCS1900
50
Min Typ Max Unit
3.1 4.0 4.8 V
400 mV
50 mV
2
30 uA
1.0 mA
1.2
1.5
22
22 mA
22
22
235 mA
241
158
166
435 mA
444
287
299
266 mA
270
191
202
06.23.2010