RT7266 Datasheet, PDF (1/13 Pages) Richtek Technology Corporation – 3A, 18V, 700kHz ACOTTM Synchronous Step-Down Converter

®
RT7266
3A, 18V, 700kHz ACOT^TM Synchronous Step-Down
Converter
General Description
The RT7266 is an adaptive on-time ACOT^TM mode
synchronous buck converter. The adaptive on-time ACOT^TM
mode control provides a very fast transient response with
few external components. The low impedance internal
MOSFET can support high efficiency operation with wide
input voltage range from 4.5V to 18V . The proprietary
circuit of the RT7266 enables to support all ceramic
capacitors. The output voltage can be adjustable between
0.8V and 8V. The soft-start is adjustable by an external
capacitor.
Ordering Information
RT7266
Package Type
SP : SOP-8 (Exposed Pad-Option 2)
Note :
Lead Plating System
Z : ECO (Ecological Element with
Halogen Free and Pb free)
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.
Features
z ACOT^TM Mode Enables Fast Transient Response
z 4.5V to 18V Input Voltage Range
z 3A Output Current
z 60mΩ Internal Low Site N-MOSFET
z Adaptive On-Time Control
z Fast Transient Response
z Support All Ceramic Capacitors
z Up to 95% Efficiency
z 700kHz Switching Frequency
z Adjustable Output Voltage from 0.8V to 8V
z Adjustable Soft-Start
z Cycle-by-Cycle Current Limit
z Input Under Voltage Lockout
z Thermal Shutdown Protection
z RoHS Compliant and Halogen Free
Applications
z Industrial and Commercial Low Power Systems
z Computer Peripherals
z LCD Monitors and TVs
z Green Electronics/Appliances
z Point of Load Regulation for High-Performance DSPs,
FPGAs, and ASICs
Marking Information
RT7266
ZSPYMDNN
RT7266ZSP : Product Number
YMDNN : Date Code
Pin Configurations
(TOP VIEW)
EN
FB
PVCC
SS
8
2
7
GND
3
6
9
4
5
VIN
BOOT
SW
GND
SOP-8 (Exposed Pad)
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS7266-02 September 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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