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RT7285/A
1.5A, 18V, 500kHzACOTTMSynchronousStep-Down Converter
General Description
Features
4.3V to 18V Input Voltage Range
The RT7285/A is a synchronous step-down converter with
Advanced Constant On-Time (ACOTTM) mode control. The
ACOTTM 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 RT7285/A enables to support all ceramic capacitors.
The output voltage can be adjusted between 0.6V and 8V.
1.5A Output Current
Advanced Constant On-Time Control
Fast Transient Response
Support All Ceramic Capacitors
Up to 95% Efficiency
500kHz 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
Ordering Information
RT7285/A
Package Type
E : SOT-23-6
J6 : TSOT-23-6
Power Saving Mode for High Efficiency at Light
Load
Lead Plating System
G : Green (Halogen Free and Pb Free)
RoHS Compliant and Halogen Free
TSOT-23-6
SOT-23-6
Applications
Industrial and Commercial Low Power Systems
Note :
Computer Peripherals
Richtek products are :
LCDMonitors and TVs
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Green Electronics/Appliances
Point of Load Regulation for High-PerformanceDSPs,
FPGAs, and ASICs
Pin Configurations
Marking Information
RT7285GE
(TOP VIEW)
SW VIN EN
0M= : Product Code
6
5
2
4
3
0M=DNN
DNN : Date Code
RT7285AGJ6
BOOTGND FB
T/SOT-23-6
0D= : Product Code
0D=DNN
DNN : Date Code
Simplified Application Circuit
RT7285/A
BOOT
V
IN
VIN
V
OUT
SW
Enable
EN
FB
GND
Copyright 2018 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
DS7285/A-03 March 2018
www.richtek.com
1
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
