RT8280 View Datasheet(PDF) - Richtek Technology
Part Name
Description
Manufacturer
RT8280 Datasheet PDF : 16 Pages
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RT8280
3A, 24V, 3MHz Step-Down Converter
General Description
The RT8280 is a high voltage buck converter that can
support an input voltage range from 4.5V to 24V with output
current up to 3A. Current mode operation provides fast
transient response and eases loop stabilization.
The chip provides protection functions such as cycle-by-
cycle current limiting and thermal shutdown protection.
In shutdown mode, the regulator only draws 25μA of
supply current. The RT8280 is available in a SOP-8
(Exposed Pad) package.
Ordering Information
RT8280
Package Type
SP : SOP-8 (Exposed Pad-Option 1)
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
RT8280
GSPYMDNN
RT8280GSP : Product Number
YMDNN : Date Code
Features
Wide Operating Input Range : 4.5V to 24V
Adjustable Output Voltage Range : 0.8V to 15V
Output Current up to 3A
25μA Low Shutdown Current
High Efficiency up to 90% at 2.2MHz
Programmable Frequency : 220kHz to 3MHz
Internal Soft-Start
Stable with Low ESR Output Ceramic Capacitors
Thermal Shutdown Protection
Cycle-By-Cycle Over Current Protection
RoHS Compliant and Halogen Free
Applications
DSL Modem for ADSL2+ Standard
Distributed Power Systems
Pre-Regulator for Linear Regulators
Pin Configurations
(TOP VIEW)
BOOT
VIN
SW
GND
8
2
7
GND
3
6
9
4
5
RT
EN
COMP
FB
SOP-8 (Exposed Pad)
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS8280-02 March 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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