RT8064
®
DS8064-07 November 2012 www.richtek.com
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©
Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
Applications
z LCD TV and Monitor
z Notebook Computers
z Distributed Power Systems
z IP Phones
z Digital Cameras
General Description
The RT8064 is a high efficiency synchronous, step-down
DC/DC converter. Its input voltage range is from 2.7V to
5.5V and provides an adjustable regulated output voltage
from 0.8V to 5V while delivering up to 2A of output current.
The internal synchronous low on-resistance power
switches increase efficiency and eliminate the need for
an external Schottky diode. The default switching
frequency is set at 2MHz, if the RT pin is left open. It can
also be varied from 200kHz to 2MHz by adding an external
resistor. Current mode operation with external
compensation allows the transient response to be
optimized over a wide range of loads and output capacitors.
Ordering Information
2A, 2MHz, Synchronous Step-Down Converter
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.
Features
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High Efficiency : Up to 95%
z Adjustable Frequency : 200kHz to 2MHz
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z No Schottky Diode Required
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z 0.8V Reference Allows Low Output Voltage
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z Low Dropout Operation : 100% Duty Cycle
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z Enable Function
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z External Soft-Start
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z Power Good Function
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z RoHS Compliant and Halogen Free
Marking Information
RT8064ZSP : Product Number
YMDNN : Date Code
RT8064ZSP
RT8064
ZSPYMDNN
28 YM
DNN
RT8064ZQW
28 : Product Code
YMDNN : Date Code
Package Type
SP : SOP-8 (Exposed Pad-Option 2)
QW : WDFN-8L 3x3 (W-Type)
RT8064
Lead Plating System
Z : ECO (Ecological Element with
Halogen Free and Pb free)
