RT6222C/D
Marking Information
RT6222CHGJ6F
RT6222DHGJ6F
1N=DNN
1P= : Product Code
DNN : Date Code
1N= : Product Code
DNN : Date Code
1P=DNN
Functional Pin Description
Pin No.
Pin Name
BOOT
GND
Pin Function
Bootstrap supply for high-side gate driver. Connect a 0.1F ceramic capacitor
1
2
3
between the BOOT and SW pins.
Power ground.
Feedback voltage input. The pin is used to set the output voltage of the converter
via a resistive divider. The converter regulates VFB to 0.6V
FB
Enable control input. Connect EN to a logic-high voltage to enable the IC or to a
logic-low voltage to disable. Do not leave this high impedance input unconnected.
4
EN
Power input. The input voltage range is from 4.3V to 18V. Must bypass with a
suitable large ceramic capacitor at this pin.
5
6
VIN
SW
Switch node. Connect to external L-C filter.
Functional Block Diagram
VIN
BOOT
V
IN
Reg
VCC
Min off
Control
VIBIAS
V
REF
VCC
UGATE
LGATE
OC
UV
SW
Driver
GND
VCC
Ripple
Gen.
GND SW
SW
V
IN
+
+
-
EN
EN
On-Time
SW
Comparator
FB
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2
DS6222C/D-02 August 2018