®
RT6203E
6A, 18V, 700kHz ACOTTM Synchronous Step-Down Converter
with VID Control
General Description
Features
VID Control Range Via I2C Compatible Interface :
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 VINinput. After
the initial power-up, the output voltage can be changed by
codes sent into the IC via an I2C 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. VOUT range is
between 0.6V to 1.62V
0.6V to 0.7V in 20mV Steps
0.7V to 1.2V in 10mV Steps
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
Applications
Pin Configuration
(TOP VIEW)
Industrial and Commercial Low Power Systems
Computer Peripherals
8
EN
VOUT
PVCC
SDA
VIN
LCDMonitors and TVs
2
3
4
7
6
5
BOOT
SW
GND
Green Electronics/Appliances
Point of Load Regulation for High-Performance DSPs,
FPGAs, and ASICs
9
SCL
SOP-8 (Exposed Pad)
Simplified Application Circuit
RT6203E
L1
V
VIN
EN
IN
V
SW
OUT
C1
C3
C2
BOOT
VOUT
Enable
SCL
SDA
2
PVCC
I C Control
C4
GND
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 ]
