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TPS54225-Q1

更新时间： 2024-11-20 12:16:15
品牌 Logo 应用领域
德州仪器 - TI 转换器
页数 文件大小 规格书
22页 817K
描述
4.5V to 18V Input, 2-A Synchronous Step-Down SWIFTTM Converter

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TPS54225-Q1 数据手册

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TPS54225-Q1  
www.ti.com  
SLVSAV9 –JUNE 2011  
TM  
4.5V to 18V Input, 2-A Synchronous Step-Down SWIFT Converter  
Check for Samples: TPS54225-Q1  
1
FEATURES  
DESCRIPTION  
23  
•
Qualified for Automotive Applications  
The TPS54225-Q1 is an adaptive on-time D-CAP2™  
mode synchronous buck converter. The  
•
D-CAP2™ Mode Enables Fast Transient  
Response  
TPS54225-Q1 enables system designers to complete  
the suite of various end equipment’s power bus  
regulators with a cost effective, low component count,  
low standby current solution. The main control loop  
for the TPS54225-Q1 uses the D-CAP2™ mode  
control which provides a fast transient response with  
no external compensation components.  
•
Low Output Ripple and Allows Ceramic Output  
Capacitor  
Wide VCC Input Voltage Range: 4.5 V to 18 V  
Wide VIN Input Voltage Range: 2 V to 18 V  
Output Voltage Range: 0.76 V to 5.5 V  
Highly Efficient Integrated FET’s Optimized  
for Lower Duty Cycle Applications  
- 160 mΩ (High Side) and 110 mΩ (Low Side)  
•
•
•
•
The TPS54225-Q1 also has a proprietary circuit that  
enables the device to adapt to both low equivalent  
series resistance (ESR) output capacitors, such as  
POSCAP or SP-CAP, and ultra-low ESR ceramic  
capacitors. The device operates from 4.5-V to 18-V  
VCC input , and from 2-V to 18-V VIN input power  
supply voltage. The output voltage can be  
programmed between 0.76 V and 5.5 V. The device  
also features an adjustable slow start time and a  
power good function. The TPS54225-Q1 is available  
in the 14 pin HTSSOP package, and designed to  
operate from –40°C to 85°C.  
•
•
•
•
•
•
•
High Efficiency, less than 10 μA at shutdown  
High Initial Bandgap Reference Accuracy  
Adjustable Soft Start  
Pre-Biased Soft Start  
700-kHz Switching Frequency (fSW  
Cycle-By-Cycle Overcurrent Limit  
Power Good Output  
)
APPLICATIONS  
•
Wide Range of Applications for Low Voltage  
System  
–
–
–
–
Digital TV Power Supply  
High Definition Blu-ray Disc™ Players  
Networking Home Terminal  
Digital Set Top Box (STB)  
space  
VOUT (50 mV/div)  
IOUT (1 A/div)  
100 ms/div  
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
3
D-CAP2, PowerPAD are trademarks of Texas Instruments.  
Blu-ray Disc is a trademark of Blu-ray Disc Association.  
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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