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RT7272BGSP PDF预览

RT7272BGSP

更新时间： 2024-11-07 22:57:55
品牌 Logo 应用领域
立锜 - RICHTEK /
页数 文件大小 规格书
15页 176K
描述
IC REG BUCK ADJ 3A SYNC 8SOP

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RT7272BGSP 数据手册

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®
RT7272B  
3A, 36V, 500kHz Synchronous Step-Down Converter  
General Description  
Features  
4.5V to 36V Input Voltage Range  
The RT7272B is a high efficiency, current mode  
synchronous step-downDC/DC converter that can deliver  
up to 3A output current over a wide input voltage range  
from 4.5V to 36V. The device integrates a 150mΩ high  
side and a 80mΩ low side MOSFET to achieve high  
conversion efficiency up to 95%. The current mode control  
architecture supports fast transient response and simple  
compensation circuit.  
3A Output Current  
Internal N-MOSFETs  
Current Mode Control  
Fixed Frequency Operation : 500kHz  
Adjustable Output Voltage from 0.8V to 30V  
High Efficiency Up to 95%  
Stable with Low ESR Ceramic Output Capacitors  
Cycle-by-Cycle Current Limit  
Input Under-Voltage Lockout  
Output Under-Voltage Protection  
Thermal Shutdown Protection  
Adjustable Current Limit  
A cycle-by-cycle current limit function provides protection  
against shorted output and an internal soft-start eliminates  
input current surge during start-up. The RT7272B provides  
complete protection functions such as input under-voltage  
lockout, output under-voltage protection, over-current  
protection and thermal shutdown.  
Power Saving Mode for High Efficiency at Light  
Load  
The RT7272B is available in the thermal enhanced SOP-8  
(Exposed Pad) package.  
RoHS Compliant and Halogen Free  
Applications  
Ordering Information  
Distributed Power Systems  
Pre-Regulator for Linear Regulators  
Notebook Computers  
RT7272B  
Package Type  
SP : SOP-8 (Exposed Pad-Option 2)  
Point of Load Regulator in Distributed Power System  
Digital Set-top Boxes  
Lead Plating System  
G : Green (Halogen Free and Pb Free)  
Note :  
PersonalDigital Recorders  
Broadband Communications  
Flat Panel TVs and Monitors  
Vehicle Electronics  
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
IN  
VIN  
BOOT  
RT7272B  
C
IN  
C
B
L
SW  
V
OUT  
Enable  
EN  
R1  
R2  
RLIM  
C
OUT  
FB  
R
C
C
L
R
C
COMP  
GND  
Copyright 2016 Richtek Technology Corporation. All rights reserved.  
©
is a registered trademark of Richtek Technology Corporation.  
DS7272B-06 November 2016  
www.richtek.com  
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