RT7285C
®
DS7285C-03 July 2014
www.richtek.com
1
©
Copyright 2014 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
Ordering Information
Note :
Richtek products are :
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.
1.5A,
18V,
500kHz
ACOT
TM
Synchronous
Step-Down Converter
General Description
The RT7285C is a synchronous step-down converter with
Advanced Constant On-Time (ACOT
TM
) mode control. 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 RT7285C 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
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
RoHS Compliant and Halogen Free
Applications
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
Package Type
E : SOT-23-6
J6 : TSOT-23-6
Lead Plating System
G : Green (Halogen Free and Pb Free)
RT7285C
Pin Configurations
(TOP VIEW)
SOT-23-6 / TSOT-23-6
BOOT GND FB
SW VIN EN
4
2
3
5
6
Marking Information
0W= : Product Code
DNN : Date Code
0B= : Product Code
DNN : Date Code
RT7285CGE
RT7285CGJ6
VIN
EN
GND
BOOT
FB
SW
V
OUT
V
IN
RT7285C
Enable
0W=DNN
0B=DNN
