RT6243A/B
Functional Block Diagram
RT6243A
VCC
PGOOD
MODE
BOOT
VIN
VIN
LDO/
UVLO
FB
UV/OV/PG
MODE
VCC
HSFET
Current Limit
VIBIAS
V
REF
Minoff
Control
Driver
SW
AGND
VCC
SW
Ripple Gen
LSFET
PGND SW
PGND
VIN
+
+
-
COMP
On Time
SW
(I
ENP2
- I
ENP1
)
VCC
VCC
I
ENP1
SS
SS Control
FB
EN
EN
RT6243B
VCC
PGOOD
MODE
BOOT
VIN
VIN
LDO/
UVLO
FB
UV/OV/PG
MODE
VCC
HSFET
Current Limit
VIBIAS
V
REF
Minoff
Control
Driver
SW
AGND
VCC
SW
Ripple Gen
LSFET
PGND SW
PGND
VIN
+
+
-
COMP
On Time
SW
SS
SS Control
EN
FB
I
ENDN
EN
Copyright
©
2019 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS6243A/B-01 June 2019
www.richtek.com
3
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
