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RT7264E PDF预览

RT7264E

更新时间: 2024-09-17 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
17页 380K
描述
4A, 21V, 500kHz Synchronous Step-Down Converter

RT7264E 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):7.5
Freq (typ) (kHz):500Freq (min) (kHz):300
Freq (max) (kHz):2000Ext Sync:Yes
Ron_HS (typ) (mOhm):120Ron_LS (typ) (mOhm):40
Iq (typ) (mA):0.7Features:Adjustable Soft-Start;Current Mode Control;Enable Input;External Synchronization;Internal Compensation;OCP;PSM;Power Good;Stable with Ceramic Capacitor;UVP
Package Type:PSOP-8;WDFN4x3-14

RT7264E 数据手册

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®
RT7264E  
4A, 21V, 500kHz Synchronous Step-Down Converter  
General Description  
Features  
z Wide Input Range : 4.5V to 21V  
The RT7264E 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 Output from 0.808V to 15V  
z 4A Output Current  
z 120mΩ/40mΩ Internal Power MOSFET Switch  
z Internal Compensation Minimizes External Parts  
z 500kHz Fixed Switching Frequency  
z Synchronized External Clock from 300kHz to 2MHz  
z Adjustable Soft-Start  
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 Cycle-by-Cycle Over Current Limit  
z Thermal Shutdown Protection  
The RT7264E requires a minimal number of readily  
available external components, providing a compact  
solution.  
z Available in SOP-8 (Exposed Pad) and 14-Lead  
WDFN Packages  
z RoHS Compliant and Halogen Free  
Ordering Information  
RT7264E  
Applications  
z Distributive Power Systems  
Package Type  
QW : WDFN-14L 4x3 (W-Type)  
SP : SOP-8 (Exposed Pad-Option 2)  
z Battery Charger  
Lead Plating System  
Z : ECO (Ecological Element with  
Halogen Free and Pb free)  
Note :  
z DSL Modems  
z Pre-Regulator for Linear Regulators  
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.  
Simplified Application Circuit  
V
BOOT  
RT7264E  
VIN  
IN  
C
BOOT  
C
C
IN  
C
L
SW  
V
OUT  
Chip Enable  
EN/SYNC  
VCC  
R1  
R
T
FB  
C
OUT  
GND  
R2  
Copyright 2012 Richtek Technology Corporation. All rights reserved.  
©
is a registered trademark of Richtek Technology Corporation.  
DS7264E-00 November 2012  
www.richtek.com  
1

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