®
RT6222C/D
2A, 18V, 1.4MHz ACOT
TM
Synchronous Step-Down Converter
General Description
The RT6222C/D is a synchronous step-down converter
with Advanced Constant On-Time (ACOT
TM
) control mode.
The ACOT
TM
provides a very fast transient response with
few external components. The low impedance internal
MOSFET supports high efficiency operation with wide input
voltage range from 4.3V to 18V. The proprietary circuit of
the RT6222C/D enables to support all ceramic capacitors.
The output voltage can be adjusted between 0.6V and 8V.
Features
4.3V to 18V Input Voltage Range
2A Output Current
Advanced Constant On-Time Control
Fast Transient Response
Support All Ceramic Capacitors
1.4MHz Switching Frequency
Adjustable Output Voltage from 0.6V to 8V
Cycle-by-Cycle Current Limit
Input Under-Voltage Lockout
Hiccup Mode Under-Voltage Protection
Thermal Shutdown
Power Saving Mode for High Efficiency at Light
Load
Low Output Voltage Ripple at Light Load
High Side Over Current Limit
RoHS Compliant and Halogen Free
Ordering Information
RT6222C/D
Package Type
J6F : TSOT-23-6 (FC)
Lead Plating System
G : Green (Halogen Free and Pb Free)
UVP Option
H : Hiccup
PSM/PWM
C : PSM/PWM
D : Force-PWM
Applications
Note :
�½
Richtek products are :
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
�½
Suitable for use in SnPb or Pb-free soldering processes.
Industrial and Commercial Low Power Systems
Computer Peripherals
LCD Monitors and TVs
Green Electronics/Appliances
Point of Load Regulation for High-Performance DSPs,
FPGAs, and ASICs
Pin Configuration
(TOP VIEW)
SW VIN EN
6
5
2
4
3
BOOT GND FB
TSOT-23-6 (FC)
Simplified Application Circuit
V
IN
RT6222C/D
BOOT
VIN
SW
Enable
EN
FB
V
OUT
GND
Copyright
©
2018 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS6222C/D-02 August 2018
www.richtek.com
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RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
