Quectel SC66, Hardware Design

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Smart LTE Module Series
SC66 Hardware Design
SC66_Hardware_Design 27 / 139
VRTC 16
PI/
PO
Power supply for
internal RTC circuit
V
O
max=3.2V;
When VBAT is not
connected:
V
I
=2.1V~3.25V
LDO13A_1P8 9 PO
1.8V output power
supply
Vnorm=1.8V
I
O
max=20mA
Power supply for
external GPIO’s pull up
circuits and level shift
circuit.
LDO7B_
3P125
157 PO
3.125V output power
supply
Vnorm=3.125V
I
O
max=150mA
Power supply only for
DP switch.
LDO11A_1P8 10 PO
1.8V output power
supply
Vnorm=1.8V
I
O
max=150mA
Power supply for I/O
VDD of cameras,
LCDs and TP etc.
LDO14A_1P8 158 PO
1.8V output power
supply
Vnorm=1.8V
I
O
max=150mA
Power supply for I/O
VDD of sensors.
LDO3B_2P8 12 PO
2.8V output power
supply
Vnorm=2.8V
I
O
max=600mA
Power supply for
sensor and LCM.
VPH_PWR 30 PO
VBAT output power
supply
Vnorm=VBAT
I
O
max=1000mA
Power supply for other
ICs.
GND
3, 4, 18,
20, 24,
31, 34,
35, 40,
43, 47,
56, 62,
87, 98,
101,
112,
125,
128,
130,
133,
135,
148,
150,
159,
160,
163,
166,
170,
173,
176,
182,
Ground