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RT8070

更新时间: 2024-11-12 11:46:31
品牌 Logo 应用领域
立锜 - RICHTEK TI的电源Demo板
页数 文件大小 规格书
12页 228K
描述

RT8070 技术参数

Status:ActiveVin (min) (V):2.7
Vin (max) (V):5.5Number of Outputs:1
Vout (min) (V):0.8Vout (max) (V):5
Preset Vout (V):Output Adj. Method:Resistor
Iout (max) (A):4Current Limit (typ) (A):5.8
Freq (typ) (kHz):1000Freq (min) (kHz):200
Freq (max) (kHz):2000Ext Sync:No
Ron_HS (typ) (mOhm):110Ron_LS (typ) (mOhm):70
Iq (typ) (mA):0.46Features:100% Duty Cycle;Adjustable Frequency;Adjustable Soft-Start;Current Mode Control;Enable Input;Fast Transient Response;OCP;PSM;Power Good;Stable with Ceramic Capacitor;UVP
Package Type:PSOP-8;WDFN3x3-8

RT8070 数据手册

 浏览型号RT8070的Datasheet PDF文件第2页浏览型号RT8070的Datasheet PDF文件第3页浏览型号RT8070的Datasheet PDF文件第4页浏览型号RT8070的Datasheet PDF文件第5页浏览型号RT8070的Datasheet PDF文件第6页浏览型号RT8070的Datasheet PDF文件第7页 
®
RT8070  
4A, 2MHz, Synchronous Step-Down Converter  
General Description  
Features  
z High Efficiency : Up to 95%  
The RT8070 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 4A of output current.  
z Adjustable Frequency : 200kHz to 2MHz  
z No Schottky Diode Required  
z 0.8V Reference Allows Low Output Voltage  
z Low Dropout Operation : 100% Duty Cycle  
z Enable Function  
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.  
z External Soft-Start  
z Power Good Function  
z RoHS Compliant and Halogen Free  
Applications  
z LCDTV and Monitor  
z Notebook Computers  
z Distributed Power Systems  
z IP Phes  
Ordering Information  
RT8070  
z Digital Cameras  
Package Type  
SP : SOP-8 (Exposed Pad-Option 2)  
QW : WDFN-8L 3x3 (W-Type)  
Marking Information  
RT8070ZSP  
Lead Plating System  
Z : ECO (Ecological Element with  
Halogen Free and Pb fee)  
RT8070ZSP : Product Number  
RT8070  
ZSPYMDNN  
YMDNN : Date Code  
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.  
RT8070ZQW  
25 : Product Code  
YMDNN : Date Code  
25 YM  
DNN  
Copyright 2012 Richtek Technology Corporation. All rights reserved.  
©
is a registered trademark of Richtek Technology Corporation.  
DS8070-07 November 2012  
www.richtek.com  
1

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