Quectel EG21-G Reference Design page 10

6
D
e.g. DC 12V IN
C
B
A
6
5
Power Supply Block Diagram
DC 5V OUT
DC-DC
VBAT_EN
VBUS_CTRL
CODEC_
POWER_EN
VDD_EXT
51K
5
4
4 3
DC 3.8V @2.0A
MIC29302WU
EN
USB_VBUS
MOS ON/OFF
EN
DC 3.3V
SGM2019-ADJYN5G/TR
EN
DC 1.8V
SGM2019-ADJYN5G/TR
DC 3.3V @0.8A
EN
MIC29302WU
EN
DC 3.3V @0.8A
SD_PWR_EN
3
2
EG21-G
Codec
ALC5616
or
TLV320AIC3104
MOS ON/OFF
EN
Quectel Wireless Solutions
DRAWN BY
Lorry XU
CHECKED BY
Woody WU
2
1
D
C
SGMII
B
SD card
A
PROJECT TITLE
EG21-G Reference Design
VER
SIZE
A2 1.0
SHEET 1 OF 14 DATE 2019/12/5
1