Richtek RT7285C Manual

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