Charging Performance Specifications - Quectel SC20 Series Hardware Design

Peak supply
I current (during
VBAT
transmission slot)
USB_VBUS USB detection
Power supply
VRTC voltage of the
backup battery

7.3. Charging Performance Specifications

Table 48: Charging Performance Specifications
Parameter
Trickle charging-A current
Trickle charging-A threshold voltage range
(15.62 mV steps)
Trickle charging-B threshold voltage range
(18.75 mV steps)
Charge voltage range (25 mV steps)
Charge voltage accuracy
Charge current range (90 mA steps)
Charge current accuracy
Charge termination current:
when the charge current is from 90 mA to 450 mA
Charge termination current:
when charge current is from 450 mA to 1440 mA
SC20_Series_Hardware_Design
Maximum power control level
at EGSM900.
Smart Module Series
- 1.8
4.35 5.0
2.0 3.0
Min. Typ. Max.
81 90 99
2.5 2.796 2.984
3.0 3.2 3.581
4 4.2 4.775
- - ±2
90 - 1440
- - ±10
- 7 -
- 7.4 -
3.0 A
6.3 V
3.25 V
Unit
mA
V
V
V
%
mA
%
%
%
90 / 133