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RT7250B PDF预览

RT7250B

更新时间: 2024-09-23 20:02:27
品牌 Logo 应用领域
立锜 - RICHTEK /
页数 文件大小 规格书
14页 222K
描述
暂无描述

RT7250B 技术参数

Status:ActiveVin (min) (V):4
Vin (max) (V):17Number of Outputs:1
Vout (min) (V):0.8Vout (max) (V):12
Preset Vout (V):Output Adj. Method:Resistor
Iout (max) (A):2Current Limit (typ) (A):3.6
Freq (typ) (kHz):800Freq (min) (kHz):
Freq (max) (kHz):Ext Sync:No
Ron_HS (typ) (mOhm):155Ron_LS (typ) (mOhm):150
Iq (typ) (mA):0.6Features:Current Mode Control;Enable Input;Force PWM;Internal Compensation;OCP;OVP;Power Good;Stable with Ceramic Capacitor;UVP
Package Type:PSOP-8

RT7250B 数据手册

 浏览型号RT7250B的Datasheet PDF文件第2页浏览型号RT7250B的Datasheet PDF文件第3页浏览型号RT7250B的Datasheet PDF文件第4页浏览型号RT7250B的Datasheet PDF文件第5页浏览型号RT7250B的Datasheet PDF文件第6页浏览型号RT7250B的Datasheet PDF文件第7页 
®
RT7250A/B  
2A, 17V, 340/800kHz Synchronous Step-Down Converter  
General Description  
Features  
4V to 17V Input Voltage Range  
The RT7250A/B is a high efficiency, monolithic  
synchronous step-downDC-DC converter that can operate  
at 340kHz/800kHz, while delivering up to 2A output current  
from a 4V to 17V input supply. The RT7250A/B's current  
mode architecture allows the transient response to be  
optimized. Cycle-by-cycle current limit provides protection  
against shorted outputs and soft-start eliminates input  
current surge during start-up. Fault conditions also include  
output under voltage protection, output over voltage  
protection and thermal shutdown. The low current (<5μA)  
shutdown mode provides output disconnection, enabling  
easy power management in battery-powered systems. The  
RT7250A/B is available in a SOP-8 (Exposed Pad)  
package.  
2A Output Current  
Internal N-MOSFETs  
Current Mode Control  
Fixed Frequency Operation : 340kHz/800kHz  
Output Adjustable from 0.8V to 12V  
Up to 95% Efficiency  
Internal Compensation  
Stable with Low ESR Ceramic Output Capacitors  
Cycle-by-Cycle Over Current Protection  
Input Under Voltage Lockout  
Output Under Voltage Protection  
Output Over Voltage Protection  
Power Good Indicator  
Thermal Shutdown Protection  
RoHS Compliant and Halogen Free  
Ordering Information  
RT7250A/B  
Applications  
Industrial and Commercial Low Power Systems  
Package Type  
SP: SOP-8 (Exposed Pad-Option 1)  
Lead Plating System  
Computer Peripherals  
Z : ECO (Ecological Element with  
Halogen Free and Pb free)  
LCDMonitors and TVs  
Green Electronics/Appliances  
Point of Load Regulation for High-Performance DSPs,  
FPGAs, and ASICs  
A : 340kHz  
B : 800kHz  
Note :  
Richtek products are :  
Marking Information  
RT7250AZSP  
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.  
RT7250AZSP : Product Number  
RT7250A  
YMDNN : Date Code  
ZSPYMDNN  
Pin Configuration  
(TOP VIEW)  
RT7250BZSP  
RT7250BZSP : Product Number  
YMDNN : Date Code  
8
SW  
VIN  
NC  
RT7250B  
ZSPYMDNN  
2
3
4
7
6
5
GND  
PGOOD  
FB  
GND  
BOOT  
EN  
9
SOP-8 (Exposed Pad)  
Copyright 2018 Richtek Technology Corporation. All rights reserved.  
©
is a registered trademark of Richtek Technology Corporation.  
DS7250A/B-03 June 2018  
www.richtek.com  
1

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