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TPS54880

更新时间： 2024-11-17 22:49:39
品牌 Logo 应用领域
德州仪器 - TI 输出元件输入元件
页数 文件大小 规格书
19页 458K
描述
4-V TO 6-V INPUT, 8-A OUTPUT TRACKING SYNCHRONOUS BUCK PWM SWITCHER WITH INTEGRATED FETs (SWIFT) FOR SEQUENCING

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TPS54880 数据手册

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Typical Size  
6,4 mm X 9,7 mm  
www.ti.com  
TPS54880  
SLVS450A − OCTOBER 2002 REVISED APRIL 2005  
4-V TO 6-V INPUT, 8-A OUTPUT TRACKING SYNCHRONOUS BUCK  
PWM SWITCHER WITH INTEGRATED FETs (SWIFT™) FOR SEQUENCING  
FEATURES  
DESCRIPTION  
D
Power Up/Down Tracking For Sequencing  
As a member of the SWIFT™ family of dc/dc regulators,  
the TPS54880 low-input voltage high-output current  
synchronous buck PWM converter integrates all  
required active components. Using the TRACKIN pin  
with other regulators, simultaneous power up and down  
are easily implemented. Included on the substrate with  
the listed features are a true, high performance, voltage  
error amplifier that enables maximum performance and  
flexibility in choosing the output filter L and C  
components; an under-voltage-lockout circuit to  
prevent start-up until the input voltage reaches 3.8 V; an  
internally or externally set slow-start circuit to limit  
inrush currents; and a power good output useful for  
processor/logic reset.  
D
30-mΩ, 12-A Peak MOSFET Switches for High  
Efficiency at 8-A Continuous Output Source  
or Sink Current  
D
Wide PWM Frequency:  
Fixed 350 kHz or Adjustable 280 kHz to  
700 kHz  
D
D
D
Power Good and Enable  
Load Protected by Peak Current Limit and  
Thermal Shutdown  
Integrated Solution Reduces Board Area and  
Component Count  
APPLICATIONS  
The TPS54880 is available in a thermally enhanced  
28-pin TSSOP (PWP) PowerPAD™ package, which  
eliminates bulky heatsinks. TI provides evaluation  
modules and the SWIFT™ designer software tool to aid  
in quickly achieving high-performance power supply  
designs to meet aggressive equipment development  
cycles.  
D
D
Low-Voltage, High-Density Distributed Power  
Systems  
Point of Load Regulation for High  
Performance DSPs, FPGAs, ASICs and  
Microprocessors Requiring Sequencing  
D
Broadband, Networking and Optical  
Communications Infrastructure  
SIMPLIFIED SCHEMATIC  
STARTUP TIMING  
I/O Supply  
I/O  
V = 5 V  
I
Input  
Core Supply  
f
= 700 kHz  
s
VIN  
PH  
CORE  
TPS54880  
BOOT  
PGND  
TRACKIN  
VSENSE  
AGND COMP  
VBIAS  
PWRGD(I/O)  
PWRGD(CORE)  
t − Time − 500 µs/div  
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.  
PowerPAD and SWIFT are trademarks of Texas Instruments.  
PRODUCTION DATA information is current as of publication date. Products  
conform to specifications per the terms of Texas Instruments standard warranty.  
Production processing does not necessarily include testing of all parameters.  
Copyright © 2002 − 2005, Texas Instruments Incorporated  
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TPS54880 替代型号

型号 品牌 替代类型 描述 数据表
TPS54980 TI

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 		具有遥感功能和 3V LDO 的 2.7V 至 16V、15A 同步降压转换器 | RWW
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 		具有遥感功能和 4.5V LDO 的 2.7V 至 16V、15A 同步降压转换器
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