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TPS54917

更新时间： 2024-11-09 12:47:11
品牌 Logo 应用领域
德州仪器 - TI 开关输入元件
页数 文件大小 规格书
21页 952K
描述
3-V TO 4-V INPUT, 9-A, SMALL SYNCHRONOUS-BUCK SWITCHER WITH INTEGRATED FETs (SWIFT™)

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TPS54917 数据手册

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Typical Size  
3,5 mm x 7 mm  
TPS54917  
www.ti.com ........................................................................................................................................................................................... SLVS847–NOVEMBER 2008  
3-V TO 4-V INPUT, 9-A, SMALL SYNCHRONOUS-BUCK  
SWITCHER WITH INTEGRATED FETs (SWIFT™)  
1
FEATURES  
DESCRIPTION  
23  
•
13-mΩ MOSFET Switches for High Efficiency  
at 9-A Continuous Output  
As a member of the SWIFT™ family of dc/dc  
regulators, the TPS54917 low-input voltage  
high-output current synchronous buck PWM  
converter offers the same features as the TPS54910  
in a smaller package and higher switching frequency,  
which allows for a smaller total solution. Included on  
the substrate with the listed features are a true, high  
performance, voltage error amplifier that enables  
maximum performance under transient conditions  
and flexibility in choosing the output filter L and C  
components; an undervoltage-lockout circuit to  
prevent start-up until the input voltage reaches 3 V;  
an internally and externally set slow-start circuit to  
limit in-rush currents; and a power good output useful  
for processor/logic reset, fault signaling, and supply  
sequencing.  
•
Adjustable Output Voltage Down to 0.9V With  
1% Accuracy  
•
•
Externally Compensated for Design Flexibility  
Wide PWM Frequency: Fixed 350 kHz, 550 kHz,  
or Adjustable 280 kHz to 1.6 MHz  
•
•
Synchronizable to 1.6MHz  
Load Protected by Peak Current Limit and  
Thermal Shutdown  
•
•
Small 3.5mm x 7mm Package and Similar  
Layout to TPS54910 Reduces Board Area and  
Total Cost  
SWIFT Documentation Application Notes, and  
SwitcherPro™ Software: www.ti.com/swift  
The TPS54917 is available in a thermally enhanced  
34 pin QFN (RUV) PowerPAD™ package, which  
eliminates bulky heatsinks. TI provides evaluation  
modules and the SwitcherPro™ design software tool  
to aid in achieving high-performance power supply  
designs to meet aggressive equipment development  
cycles.  
APPLICATIONS  
•
•
•
Low-Voltage, High-Density Systems With  
Power Distributed at 3.3 V  
Point of Load Regulation for High Performance  
DSPs, FPGAs, ASICs, and Microprocessors  
Broadband, Networking and Optical  
Communications Infrastructure  
SIMPLIFIED SCHEMATIC  
EFFICIENCY AT 700 kHz  
TPS54917  
100  
95  
90  
85  
80  
75  
70  
65  
60  
55  
50  
VIN  
PH  
Input  
Output  
SS/ENA  
PWRGD  
RT  
BOOT  
PGND  
COMP  
SYNC  
VBIAS  
VSENSE  
AGND  
V = 3.3 V,  
I
Compensation  
Network  
V
= 2.5 V  
O
0
1
2
3
4
5
6
7
8
9
10 11 12  
I
− Output Current − A  
O
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
SwitcherPro, SWIFT, PowerPAD are trademarks of Texas Instruments.  
All other trademarks are the property of their respective owners.  
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 © 2008, Texas Instruments Incorporated  
1234567...21

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TPS54917 替代型号

型号 品牌 替代类型 描述 数据表
TPS54617 TI

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