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TPS2505_15 PDF预览

TPS2505_15

更新时间: 2024-11-20 02:58:23
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
30页 1024K
描述
Integrated Dual USB Switches, Boost Converter and LDO

TPS2505_15 数据手册

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TPS2505  
www.ti.com  
SPAS093B DECEMBER 2009REVISED JUNE 2010  
INTEGRATED DUAL USB SWITCHES, BOOST CONVERTER AND LDO  
Check for Samples: TPS2505  
1
FEATURES  
Typical Application  
Integrated Synchronous Boost Converter, LDO  
and Dual USB Current-Limited Switches  
2.2µH  
1.8-V to 5.25-V Input Voltage  
(2.2-V Minimum Start-Up Voltage)  
Power  
Supply  
1.8V – 5.25V  
SW  
IN  
RESET  
3.3V Power  
10µF  
EN  
LDOOUT  
Adjustable Independent USB Current Limit  
1µF  
EN_LDO  
LDOIN  
100 mA to 1100 mA  
5V USB Power  
120µF  
HUB  
CONTROLLER  
USB1  
Auxiliary 5.1-V Output  
5V Output  
RFAULT1  
AUX  
22µF  
3.3-V Linear Regulator Output  
Inrush Current < 100 mA  
TPS2505  
RFAULT2  
5V USB Power  
120µF  
USB2  
ILIM1  
ILIM2  
FAULT1  
FAULT2  
ENUSB1  
ENUSB2  
Minimal External Components Required  
Deglitched Independent Fault Reporting  
Small 5-mm x 5-mm QFN-20 Package  
Industrial Temperature Range  
RLIM1  
RLIM2  
GND  
PAD  
PGND  
APPLICATIONS  
Portable Applications Using Single Li+ Cell  
Bus Powered USB Hosts  
USB Hosts Without Native 5-V Supplies  
Computer Peripherals  
DESCRIPTION  
The TPS2505 provides an integrated solution to meet USB 5-V power requirements from a 1.8-V to 5.25-V input  
supply. The features include a 5.1-V, 1100-mA boost converter, a 200-mA, 3.3-V LDO linear regulator and dual  
USB 2.0 compliant power outputs with independent output switch enable, current limit, and over-current fault  
reporting.  
The 1.8-V to 5.25-V input can be supplied by sources including DC/DC regulated supplies (e.g. 3.3 V), or  
batteries such as single cell Li+, two-cell or three-cell NiCd, NiMH or alkaline.  
The output trip current for the dual USB switches can be programmed via external resistors from as low as  
100 mA to as high as 1100 mA.  
An auxiliary 5.1-V output is provided, where the total current supplied by the USB outputs and the auxiliary by  
cannot exceed 1100 mA.  
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.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2009–2010, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  

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