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TPS5430

更新时间： 2024-11-29 04:27:31
品牌 Logo 应用领域
德州仪器 - TI 转换器输入元件
页数 文件大小 规格书
21页 691K
描述
1.6 MHz, 3-V TO 6-V INPUT, 3-A SYNCHRONOUS STEP-DOWN SWIFT⑩ CONVERTER WITH DISABLED SINKING DURING START-UP

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TPS5430 数据手册

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TPS54377  
www.ti.com  
SLVS779–SEPTEMBER 2007  
1.6 MHz, 3-V TO 6-V INPUT, 3-A SYNCHRONOUS STEP-DOWN SWIFT™ CONVERTER  
WITH DISABLED SINKING DURING START-UP  
1
FEATURES  
DESCRIPTION  
2
•
60-mΩ MOSFET Switches for High Efficiency  
at 3-A Continuous Output Current  
As a member of the SWIFT™ family of dc/dc  
regulators, the TPS54377 low-input-voltage  
high-output-current synchronous-buck PWM  
•
•
Adjustable Output Voltage Down to 0.9 V With  
1% Accuracy  
converter integrates all required active components.  
Included on the substrate with the listed features are  
a true, high performance, voltage error amplifier that  
provides high performance under transient conditions;  
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  
Switching Frequency: Adjustable From  
280 kHz to 1600 kHz  
•
•
•
Disabled Current Sinking During Start-Up  
Fast Transient Response  
Load Protected by Peak Current Limit and  
Thermal Shutdown  
currents; and  
a power good output useful for  
•
Integrated Solution Reduces Board Area and  
Total Cost  
processor/logic reset, fault signaling, and supply  
sequencing.  
•
•
Spacing Saving 4mm x 5mm QFN Packaging  
For reliable power up in output precharge  
applications, the TPS54377 is designed to only  
source current during start-up.  
For SWIFT Documentation, Application Notes,  
and Design Software, see the TI website at  
www.ti.com/swift  
The TPS54377 device is available in a thermally  
enhanced 24-pin QFN (RHF) PowerPAD™ package,  
which eliminates bulky heatsinks. TI provides  
evaluation modules and the SWIFT designer 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 5 V or 3.3 V  
Point of Load Regulation for High  
Performance DSPs, FPGAs, ASICs, and  
Microprocessors  
•
•
Broadband, Networking and Optical  
Communications Infrastructure  
START-UP WAVEFORM  
Simplified Schematic  
*
*
R
L
= 1 Ω  
Input  
Output  
TPS54377  
VIN  
PH  
PWRGD  
SS/ENA  
SYNC  
RT  
BOOT  
PGND  
V = 3.3 V  
I
VSENSE  
VBIAS  
AGND COMP  
V
= 1.8 V  
O
5.0 ms/div  
* Optional  
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, PowerPAD 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 © 2007, Texas Instruments Incorporated  
1234567...21

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TPS5430 替代型号

型号 品牌 替代类型 描述 数据表
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