RT5112A
Marking Information
1E : Product Code
Pin Configuration
(TOP VIEW)
A1
A2
A3
A4
A5
1E YM
DNN
YMDNN : Date Code
LXB1 VINB1 VINB2 LXB2
B1
B2
B3
B4
LXB2
B5
GNDB1 FB1
C1
C2
NC
C3
INTRB GNDB2
C4
C5
FB2
D1
HWEN DGND
D2
D3
SDA
D4
SCL
D5
VIN4
E1
VIN3
E2
VSYS
E3
REF
E4
VIN12
E5
LDO4
LDO3
AGND LDO2
LDO1
WL-CSP-25B 2.2 x 2.3 (BSC)
Typical Application Circuit
V
IN_B1
3.8V
RT5112A
C1
10µF
L1
1µH
A2 VINB1
A1 LXB1
B2 FB1
B1 GNDB1
D3 VSYS
R1
V
IN_B1
2.2K
3.8V
2
I C
BUS
B4 INTRB
C5 SCL
C4 SDA
I C
2
1.2A Buck1
Driver
&
Control
1.2A Buck2
Driver
&
Control
VINB2 A3
LXB2 A4, A5
FB2 C1
GNDB2 B5
HWEN C2
V
OUT_BUCK1
0.6V to 3.3V
L2
1µH
C3
10µF
V
IN_B2
3.8V
C2
10µF
C4
10µF
V
OUT_BUCK2
0.6V to 3.3V
V
IN_SYS
3.8V
C13
1µF
Control Logic
NC
300mA LDO1
Driver &
Control
300mA LDO2
Driver &
Control
300mA LDO3
Driver &
Control
B3
LDO1 E5
VIN12 D5
LDO2 E4
LDO3 E2
VIN3 D2
VIN4 D1
D4 REF
C11
10nF
Ref
300mA LDO4
Driver &
Control
V
OUT_LDO1
C6 0.6 to 3.775V
2.2µF
V
IN_VIN12
C5 3.8V
2.2µF
V
OUT_LDO2
C7 0.6 to 3.775V
2.2µF
V
OUT_LDO3
C9 0.6 to 3.775V
2.2µF
V
IN_VIN3
C8 3.8V
2.2µF
V
IN_VIN4
C12 3.8V
2.2µF
V
OUT_LDO4
C10 0.6 to 3.775V
2.2µF
LDO4 E1
AGND
E3
DGND
C3
Component List of Evaluation Board
Reference
C1, C2, C3, C4
C5, C8, C12
C6, C7, C9, C10
C11
C13
L1, L2
Qty
1
1
1
1
1
1
Part Number
JMK105CBJ106MV-F
JMK105BJ225KV-F
GRM033R60J225ME47D
LMK105BJ103KV-F
LMK063BBJ105MPLF
MEKK2016T1R0M
Description
10F/X5R/6.3V
2.2F/X5R/6.3V
2.2F/X5R/6.3V
10nF/X5R/6.3V
1F/X5R/10V
1H/3.1A/50m
Package
0402
0402
0201
0402
0201
2016
Manufacturer
TAIYO YUDEN
TAIYO YUDEN
MURATA
TAIYO YUDEN
TAIYO YUDEN
TAIYO YUDEN
Copyright
©
2019 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
2
DS5112A-02 August 2019
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
