Power Output - Quectel Smart Module Series Hardware Design

If RTC is ineffective, it can be synchronized through network after the module is powered on.

2.5–3.2 V input voltage range and 3.2 V typical value for VRTC, when VBAT is disconnected.

When powered by VBAT, the RTC error is 50 ppm. When powered by VRTC, the RTC error is about
200 ppm.

If rechargeable battery is used, the ESR of battery should be less than 2 kΩ, and it is recommended
to use the MS621FE-FL11E of SEIKO.

3.7. Power Output

SA800U-WF supports output of regulated voltages for peripheral circuits. During application, it is
recommended to use parallel capacitors (33 pF and 10 pF) in the circuit to suppress high-frequency
noise.
Table 5: Power Description
Pin Name
VREG_S4A_1V8
LVS1A_1V8
LVS2A_1V8
LDO12A_1V8
SD_LDO13A
LDO14A_1V88
LDO19A_3V0
SD_LDO21A
LDO24A_3V075
LDO28A_3V0
VREG_BOB
SA800U-WF_Hardware_Design
Default Voltage (V)
1.8
1.8
1.8
1.8
1.8/2.95
1.8
3.0
2.95
3.075
3.0
3.7
SA800U-WF Hardware Design
Drive Current (mA)
2000
300
100
300
50
50
600
800
150
150
2000
Smart Module Series
Comment
Keep
-
Keep
-
-
-
-
-
-
-
Keep
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