5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
5V to 3.3V : 500mA
RT8075 WDFN_10L 1A 3X3
5V to 1.2V : 500mA
5.0V=2A
Optional for fining tune
power up sequence timing
*Note2-2
3V3 & 1V2 Output Power Timing Setting
Mount R40,R46 with 0 ohm resistors
Unmount C22, C32
3V3 & 1V2
without delay
Mount R46 with 4.7K ohm resistor and
mount C32 with 0.1uF
Delay 3V3
Delay 1V2 Mount R40 with 4.7K ohm resistor and
mount C22 with 0.1uF
*Note2-2:
The R40,C22 R46,C32 resistor and capacitors are optional for fining tune the 3V3 and 1V2
power up sequence timing. (Refer to below "3V3 & 1V2 Output Power Timing Setting" table for details.)
5V to 3.3V/1.2V Dual-Channel Switching Regulator
Optional
Micro-USB 5V Power Connector
*Note2-1
*Note2-1:
Please open J5 when both CON1 and DB_5V_B have their own 5V power sources.
(Values of resistors need to be fine-tuned)
AX58100-REF-1_SCHEMATIC 1.20
Power
B
2 6Friday, August 06, 2021
Title
Size Document Number Rev
Date: Sheet of
ASIX ELECTRONICS CORPORATION
A3V3
1V2
A1V2
GND
3V3
DC_5V
3.3V_EN
1.2V_EN
1V2
3V3
DC_5V 3.3V_EN
DC_5V 1.2V_EN
A3V3
A1V2
DB_5V_B
SHIELD_GND
DB_5V_B
A3V3 3,5
1V2 3
A1V2 3
GND 3,4,5
3V3 3,4
DB_5V_B 3
DC_5V
DC_5V
DC_5V
FB3
PBY160808T-110Y-N
C22 NC,0.1uF
C13
0.1uF
C10
20pF
H3
SCREW HOLE
C12
47uF/16V
C7
0.1uF
C17
0.1uF
R13 100K 1%
R40 0
H4
SCREW HOLE
D5 SM5817A
C9
10pF H6
SCREW HOLE
C11
0.1uF
J6
CON2
1
2
D4
SM5817A
FD3
FD
1
H2
SCREW HOLE
R12
453K1%
J7
CON2
1
2
H7
SCREW HOLE
C14
22uF/10V
L1 PBY160808T-110Y-N
C18
22uF/16V
FD2
FD
1
H1
SCREW HOLE
C6
0.1uF
R9
100K 1%
FD4
FD
1
C16
0.1uF H5
SCREW HOLE
CON1
USB_B TYPE
1
2
3
4
5
11
10
9
8
VBUS
D-
D+
ID
GND
GND
GND
GND
GND
C4
22uF/16V
C32 NC,0.1uF
D2
LED_R
FD1
FD
1
J8
CON2
1
2
RT8075
Exposed Pad
U1
8
3
1
6
4
10
5
2
7
9
11
VIN1
VIN2
EN1
EN2
GND
LX1
LX2
FB1
FB2
GND
EPAD
J2
CON2
1
2
R8 100K 1%
J5
CONN1x2_2.54mm
1
2
F1
SMD1812P200TFT (750mA)
L2
2.2uH
R32
1K
FB2
PBY160808T-110Y-N
C8
22uF/10V
C34
22uF/10V
R46 0
L3
2.2uH
D3 SM5817A
C33
0.1uF
C15
22uF/6.3V
