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TPS2555 PDF预览

TPS2555

更新时间: 2024-11-21 11:07:55
品牌 Logo 应用领域
德州仪器 - TI 开关电源开关电源管理电路电源电路
页数 文件大小 规格书
23页 1039K
描述
低电平有效的 0.5-2.5A 可调节、2 个可设置 ILIMIT、4.5-5.5V、73mΩ USB 电源开关

TPS2555 数据手册

 浏览型号TPS2555的Datasheet PDF文件第2页浏览型号TPS2555的Datasheet PDF文件第3页浏览型号TPS2555的Datasheet PDF文件第4页浏览型号TPS2555的Datasheet PDF文件第5页浏览型号TPS2555的Datasheet PDF文件第6页浏览型号TPS2555的Datasheet PDF文件第7页 
TPS2554  
TPS2555  
www.ti.com  
SLVSAM0 JUNE 2011  
Precision Adjustable Current-Limited, Power-Distribution Switches  
Check for Samples: TPS2554, TPS2555  
1
FEATURES  
APPLICATIONS  
2
Meets USB Current-Limiting Requirements  
Adjustable Current Limit, 500 mA to 2.5 A (typ)  
Two Independently-Settable, Current-Limit  
Thresholds  
USB Ports/Hubs  
Digital TV  
Set-Top Boxes  
VOIP Phones  
Fast Overcurrent Response - 1.5 μs (typ)  
73-mHigh-Side MOSFET  
3.8-μA Maximum Standby Supply Current  
PowerPADThermal Management  
Automatic Output Discharge when Disabled  
DESCRIPTION  
The TPS2554/55 power-distribution switches are  
intended for applications where precision current  
limiting is required or heavy capacitive loads and  
short circuits are encountered. These devices offer a  
programmable current-limit threshold between 500  
mA and 2.5 A (typ) via an external resistor.  
Both High-Enable (TPS2554) and Low-Enable  
(TPS2555) Versions Available  
TPS2554/55 devices limit the output current to a safe  
level by switching into a constant-current mode when  
the output load exceeds the current-limit threshold.  
The FAULT logic output asserts low during  
overcurrent and over-temperature conditions.  
TPS2554/55 DRC Package and Typical Application Diagram  
TPS2554/TPS2555  
DRC PACKAGE  
(TOP VIEW)  
TPS2554/55  
4.5 V to 5.5 V  
VBUS  
120 mF  
2/3 IN  
OUT 8/9  
100 nF  
RFAULT  
GND 1  
10 FAULT  
Current Limit  
Select  
ILIM_SEL  
4
7
6
FAULT Signal  
IN  
IN  
2
9
OUT  
OUT  
10 FAULT  
ILIM0  
ILIM1  
PAD  
3
8
2x RILIMx  
Power Switch  
Enable  
5
EN/EN  
ILIM_SEL 4  
7 ILIM0  
6 ILIM1  
Power  
PAD  
GND  
5
EN/EN  
1
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
PowerPAD is a trademark of Texas Instruments.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2011, Texas Instruments Incorporated  

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