Smart LTE Module Series
SC600Y&SC600T Hardware Design
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3.7. Power Output
SC600Y&SC600T support output of regulated voltages for peripheral circuits. During application, it is
recommended to use parallel capacitors (33pF and 10pF) in the circuit to suppress high frequency noise.
Table 8: Power Description
Pin Name
Default Voltage (V)
Drive Current (mA)
Idle
LDO5_1P8
1.8
20
Keep
LDO6_1P8
1.8
300
/
LDO10_2P8
2.8
150
/
LDO17_2P85
2.85
300
/
LDO2_1P1
1.1
1200
/
LDO22_2P8
2.8
150
/
LDO23_1P2
1.2
600
/
SD_LDO12
1.8/2.95
50
/
SD_LDO11
2.95
800
/
USIM1_VDD
1.8/2.95
50
/
USIM2_VDD
1.8/2.95
50
/
3.8. Battery Charge and Management
SC600Y&SC600T modules support a fully programmable switch-mode Li-ion battery charge function. It
can charge single-cell Li-ion and Li-polymer battery. The battery charger of SC600Y&SC600T modules
supports trickle charging, pre-charge, constant current charging and constant voltage charging modes,
which optimize the charging procedure for Li-ion batteries.
⚫
Trickle charging:
When the battery voltage is below 2.1V, a 75mA trickle charging current is applied
to the battery.
⚫
Pre-charge:
When the battery voltage is charged up and is between 2.1V and 3.0V (the maximum
pre-charge voltage is 2.3V~3.0V programmable, 3.0V by default), the system will enter into
