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TPS54719RTER

更新时间： 2024-11-18 11:58:23
品牌 Logo 应用领域
德州仪器 - TI 转换器
页数 文件大小 规格书
36页 1347K
描述
2.95 V to 6 V Input, 7-A Synchronous Step Down SWIFT™ Converter

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TPS54719RTER 数据手册

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TPS54719  
www.ti.com  
SLVSB69 –JUNE 2012  
2.95 V to 6 V Input, 7-A Synchronous Step Down SWIFT™ Converter  
1
FEATURES  
DESCRIPTION  
The TPS54719 device is a full featured 6 V, 7 A,  
synchronous step down current mode converter with  
two integrated MOSFETs.  
2
•
Two 30 mΩ (typical) MOSFETs for High  
Efficiency at 7-A loads  
•
•
200kHz to 2MHz Switching Frequency  
The TPS54719 enables small designs by integrating  
the MOSFETs, implementing current mode control to  
reduce external component count, reducing inductor  
size by enabling up to 2 MHz switching frequency,  
and minimizing the IC footprint with a small 3mm x  
3mm thermally enhanced QFN package.  
0.6 V ± 2% Voltage Reference Over  
Temperature  
•
•
•
Adjustable Slow Start / Sequencing  
UV and OV Power Good Output  
Low Operating and Shutdown Quiescent  
Current  
The TPS54719 provides accurate regulation for a  
variety of loads with an accurate ±2% Voltage  
Reference (VREF) over temperature.  
•
•
Safe Start-up into Pre-Biased Output  
Cycle by Cycle Current Limit, Thermal and  
Frequency Fold Back Protection  
Efficiency is maximized through the integrated 30mΩ  
MOSFETs and 455μA typical supply current. Using  
the enable pin, shutdown supply current is reduced to  
1 μA by entering a shutdown mode.  
•
•
–40°C to 140°C Operating Junction  
Temperature Range  
Thermally Enhanced 3mm × 3mm 16-pin QFN  
Under voltage lockout is internally set at 2.4 V, but  
can be increased by programming the threshold with  
a resistor network on the enable pin. The output  
voltage startup ramp is controlled by the slow start  
pin. An open drain power good signal indicates the  
output is within 93% to 108% of its nominal voltage.  
APPLICATIONS  
•
•
Low-Voltage, High-Density Power Systems  
Point of Load Regulation for High Performance  
DSPs, FPGAs, ASICs and Microprocessors  
Frequency fold back and thermal shutdown protects  
the device during an overcurrent condition.  
•
Broadband, Networking and Optical  
Communications Infrastructure  
The TPS54719 is supported in the Webench™  
Software Tool at www.ti.com/webench.  
SIMPLIFIED SCHEMATIC  
VIN  
spacer  
C
BOOT  
VIN  
BOOT  
TPS54719  
100  
R4  
R5  
C
I
3.3 VIN / 1.8 VOUT  
90  
80  
70  
60  
50  
40  
30  
20  
L
O
VOUT  
EN  
PH  
C
O
5 VIN / 1.8 VOUT  
5 VIN / 3.3 VOUT  
R
1
PWRGD  
VSENSE  
5 VIN / 1.2 VOUT  
SS/TR  
RT  
3.3 VIN / 1.2 VOUT  
GND  
COMP  
R
2
AGND  
C
POWERPAD  
ss  
R
R
T
10  
100  
1k  
10k  
3
Load Current (mA)  
G022  
C
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
SWIFT, Webench are trademarks 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 © 2012, Texas Instruments Incorporated  
1234567...36

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TPS54719RTER 替代型号

型号 品牌 替代类型 描述 数据表
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