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RT8290ZSP PDF预览

RT8290ZSP

更新时间： 2024-11-20 22:58:31
品牌 Logo 应用领域
立锜 - RICHTEK /
页数 文件大小 规格书
12页 333K
描述
IC REG BUCK ADJ 3A SYNC 8SOP

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中文翻译

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RT8290ZSP 数据手册

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®
RT8290  
3A, 23V, 340kHz Synchronous Step-Down Converter  
General Description  
Features  
4.5V to 23V Input Voltage Range  
1.5% High Accuracy Feedback Voltage  
3A Output Current  
The RT8290 is a high efficiency synchronous step-down  
DC/DC converter that can deliver up to 3Aoutput current  
from 4.5V to 23V input supply. The RT8290's current mode  
architecture and external compensation allow the transient  
response to be optimized over a wide range of loads and  
output capacitors. Cycle-by-cycle current limit provides  
protection against shorted outputs and soft-start eliminates  
input current surge during start-up. The RT8290 also  
provides output under voltage protection and thermal  
shutdown protection. The low current (<3μA) shutdown  
mode provides output disconnection, enabling easy power  
management in battery-powered systems. The RT8290  
is awailable in an SOP-8 (Exposed Pad) package.  
Integrated N-MOSFET Switches  
Current Mode Control  
Fixed Frequency Operation : 340kHz  
Output Adjustable from 0.925V to 20V  
Up to 95% Efficiency  
Programmable Soft-Start  
Stable with Low-ESR Ceramic Output Capacitors  
Cycle-by-Cycle Over Current Protection  
Input Under Voltage Lockout  
Output Under Voltage Protection  
Thermal Shutdown Protection  
Thermally Enhanced SOP-8 (Exposed Pad) Package  
RoHS Compliant and Halogen Free  
Applications  
Industrial and Commercial Low Power Systems  
Computer Peripherals  
Ordering Information  
LCDMonitors and TVs  
RT8290  
Green Electronics/Appliances  
Point of Load Regulation of High-Performance DSPs,  
FPGAs and ASICs.  
Package Type  
SP : SOP-8 (Exposed Pad-Option 1)  
Lead Plating System  
G : Green (Halogen Free and Pb Free)  
Z : ECO (Ecological Element with  
Halogen Free and Pb free)  
Pin Configurations  
(TOP VIEW)  
BOOT  
VIN  
8
7
6
5
SS  
Note :  
2
3
4
EN  
GND  
Richtek products are :  
SW  
COMP  
FB  
9
GND  
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.  
SOP-8 (Exposed Pad)  
Typical Application Circuit  
1
2
V
IN  
BOOT  
RT8290  
VIN  
C
4.5V to 23V  
C
IN  
BOOT  
L1  
10µH  
R
100k  
EN  
10µFx2  
10nF  
V
3
OUT  
SW  
3.3V/3A  
7
8
EN  
SS  
R1  
26.1k  
C
OUT  
5
6
FB  
22µFx2  
C
SS  
0.1µF  
4,  
C
C
R
C
R2  
3.9nF  
9 (Exposed Pad)  
6.8k  
10k  
GND  
COMP  
C
P
NC  
Copyright 2016 Richtek Technology Corporation. All rights reserved.  
©
is a registered trademark of Richtek Technology Corporation.  
DS8290-04 October 2016  
www.richtek.com  
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