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RT8287A PDF预览

RT8287A

更新时间: 2024-11-12 12:23:35
品牌 Logo 应用领域
立锜 - RICHTEK 转换器
页数 文件大小 规格书
14页 348K
描述
4A, 21V 500kHz Synchronous Step-Down Converter

RT8287A 技术参数

Status:ActiveVin (min) (V):4.5
Vin (max) (V):21Number of Outputs:1
Vout (min) (V):0.808Vout (max) (V):15
Preset Vout (V):Output Adj. Method:Resistor
Iout (max) (A):4Current Limit (typ) (A):7
Freq (typ) (kHz):500Freq (min) (kHz):
Freq (max) (kHz):Ext Sync:No
Ron_HS (typ) (mOhm):120Ron_LS (typ) (mOhm):40
Iq (typ) (mA):0.7Features:Adjustable Soft-Start;Current Mode Control;Enable Input;Force PWM;Internal Compensation;OCP;Power Good;Stable with Ceramic Capacitor;UVP
Package Type:WDFN4x3-14

RT8287A 数据手册

 浏览型号RT8287A的Datasheet PDF文件第2页浏览型号RT8287A的Datasheet PDF文件第3页浏览型号RT8287A的Datasheet PDF文件第4页浏览型号RT8287A的Datasheet PDF文件第5页浏览型号RT8287A的Datasheet PDF文件第6页浏览型号RT8287A的Datasheet PDF文件第7页 
®
RT8287A  
4A, 21V 500kHz Synchronous Step-Down Converter  
General Description  
Features  
z 4A Output Current  
The RT8287A is a synchronous step-down regulator with  
an internal power MOSFET. It achieves 4A of continuous  
output current over a wide input supply range with excellent  
load and line regulation. Current mode operation provides  
fast transient response and eases loop stabilization.  
z Adjustable Soft-Start  
z 120mΩ/40mΩ Internal Power MOSFET Switch  
z Internal Compensation Minimizes External Parts  
Count  
z Fixed 500kHz Frequency  
Fault condition protection includes cycle-by-cycle current  
limiting and thermal shutdown. An adjustable soft-start  
reduces the stress on the input source at startup.  
z Thermal Shutdown Protection  
z Cycle-by-Cycle Over Current Protection  
z Wide 4.5V to 21V Operating Input Range  
z Adjustable Output from 0.808V to 15V  
z Small 14-Lead WDFN Package  
z RoHS Compliant and Halogen Free  
The RT8287A requires a minimal number of readily  
available external components, providing a compact  
solution.  
Ordering Information  
RT8287A  
Applications  
z Distributive Power Systems  
Package Type  
QW : WDFN-14L 4x3 (W-Type)  
z Battery Charger  
z DSL Modems  
Lead Plating System  
Z : ECO (Ecological Element with  
Halogen Free and Pb free)  
z Pre-Regulator for Linear Regulators  
Pin Configurations  
Note :  
Richtek products are :  
(TOP VIEW)  
` 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.  
1
2
3
4
5
6
7
14  
VIN  
SW  
SW  
SW  
SW  
AGND  
GND  
GND  
VCC  
SS  
PGOOD  
FB  
13  
12  
11  
10  
9
GND  
BOOT  
EN  
15  
8
Marking Information  
01 : Product Code  
WDFN-14L 4x3  
YMDNN : Date Code  
01 YM  
DNN  
Copyright 2012 Richtek Technology Corporation. All rights reserved.  
©
is a registered trademark of Richtek Technology Corporation.  
DS8287A-03 June 2012  
www.richtek.com  
1

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