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TPS54426RSAT PDF预览

TPS54426RSAT

更新时间: 2024-12-02 11:08:07
品牌 Logo 应用领域
德州仪器 - TI 开关控制器开关式稳压器开关式控制器电源电路转换器开关式稳压器或控制器
页数 文件大小 规格书
22页 657K
描述
具有 Eco-Mode™ 的 4.5V 至 18V 输入、4A 同步降压转换器 | RSA | 16 | -40 to 85

TPS54426RSAT 数据手册

 浏览型号TPS54426RSAT的Datasheet PDF文件第2页浏览型号TPS54426RSAT的Datasheet PDF文件第3页浏览型号TPS54426RSAT的Datasheet PDF文件第4页浏览型号TPS54426RSAT的Datasheet PDF文件第5页浏览型号TPS54426RSAT的Datasheet PDF文件第6页浏览型号TPS54426RSAT的Datasheet PDF文件第7页 
TPS54426  
www.ti.com  
SLVSAD6 AUGUST 2010  
4.5V to 18V Input, 4-A Synchronous Step-Down SWIFT™ Converter with Eco-Mode™  
Check for Samples: TPS54426  
1
FEATURES  
DESCRIPTION  
23  
D-CAP2™ Mode Enables Fast Transient  
Response  
The TPS54426 is an adaptive on-time D-CAP2™  
mode synchronous buck converter. The TPS54426  
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  
TPS54426 uses the D-CAP2™ mode control which  
provides a very fast transient response with no  
external compensation components. The adaptive  
on-time control supports seamless transition between  
PWM mode at higher load conditions and  
Eco-mode™ operation at light loads. Eco-mode™  
allows the TPS54426 to maintain high efficiency  
during lighter load conditions. The TPS54426 also  
has a proprietary circuit that enables the device to  
adopt to both low equivalent series resistance (ESR)  
output capacitors, such as POSCAP, SP-CAP, and  
ultra-low ESR ceramic capacitors. The device  
operates from 4.5-V to 18-V VIN input. The output  
voltage can be programmed between 0.76 V and 5.5  
V. The device also features an adjustable soft start  
time and a power good function. The TPS54426 is  
available in the 14-pin HTSSOP package, and  
designed to operate from –40°C to 85°C.  
Low Output Ripple and Allows Ceramic Output  
Capacitor  
Wide VIN Input Voltage Range: 4.5 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  
– 65 m(High Side) and 55 m(Low Side)  
High Efficiency, less than 10 mA at shutdown  
High Initial Bandgap Reference Accuracy  
Adjustable Soft Start  
Pre-Biased Soft Start  
700-kHz Switching Frequency (fSW  
)
Cycle By Cycle Over Current Limit  
Power Good Output  
Auto-Skip Eco-mode™ for High Efficiency at  
Light Load  
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)  
Vout (50 mV/div)  
Iout (2 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, Eco-mode, 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 © 2010, Texas Instruments Incorporated  

TPS54426RSAT 替代型号

型号 品牌 替代类型 描述 数据表
TPS54426RSAR TI

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具有 Eco-Mode™ 的 4.5V 至 18V 输入、4A 同步降压转换器 | RSA

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