®
RT6203E
6A, 18V, 700kHz ACOT
TM
Synchronous Step-Down Converter
with VID Control
General Description
The RT6203E is an adaptive on-time mode synchronous
Buck converter. The main control loop of the RT6203E
uses an adaptive on-time mode control which provides a
very fast
transient response with no external components.
The RT6203E operates from 4.5V to 18V VIN input. After
the initial power-up, the output voltage can be changed by
codes sent into the IC via an I
2
C compatible VID control
bus. There are special codes which can be used to program
current limit level and thermal shutdown level. Shutdown
and startup can be also programmed by special codes.
The device also features an internal soft-start time. Output
voltage is adjustable by VID code setting. V
OUT
range is
between 0.6V to 1.62V
Features
VID Control Range Via I
2
C Compatible Interface :
�½
�½
0.6V to 0.7V in 20mV Steps
0.7V to 1.2V in 10mV Steps
�½
1.2V to 1.62V in 20mV Steps
Adjustable Current Limit
Adjustable Thermal Shutdown
Fast Transient Response
Steady 700kHz Switching Frequency
Optimized for All Ceramic Capacitors
Internal Soft-Start
Input Under-Voltage Lockout
Thermal Shutdown
RoHS Compliant and Halogen Free
Pin Configuration
(TOP VIEW)
EN
VOUT
PVCC
SDA
2
3
4
8
Applications
VIN
BOOT
SW
SCL
GND
9
7
6
5
SOP-8 (Exposed Pad)
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
Simplified Application Circuit
RT6203E
V
IN
C1
Enable
I C Control
2
VIN
L1
SW
C2
BOOT
C3
V
OUT
EN
SCL
SDA
GND
VOUT
PVCC
C4
Copyright
©
2019 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS6203E-00 January 2019
www.richtek.com
1
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
