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TPS54311PWPR PDF预览

TPS54311PWPR

更新时间： 2024-09-18 23:37:23
品牌 Logo 应用领域
其他 - ETC 模拟IC开关光电二极管
页数 文件大小 规格书
15页 255K
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Analog IC

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TPS54311PWPR 数据手册

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TPS54311, TPS54312  
TPS54313, TPS54314  
TPS54315, TPS54316  
Typical Size  
6,60 mm X 2,20 mm  
SLVS416 – FEBRUARY 2002  
3-V TO 6-V INPUT, 3-A OUTPUT SYNCHRONOUS-BUCK PWM  
SWITCHER WITH INTEGRATED FETs (SWIFT )  
FEATURES  
DESCRIPTION  
D
D
D
60-mΩ MOSFET Switches for High Efficiency  
at 3-A Continuous Output Source or Sink  
Current  
As members of the SWIFT family of dc/dc regulators,  
the TPS54311, TPS54312, TPS54313, TPS54314,  
TPS54315 and TPS54316 low-input-voltage high-  
output-current synchronous-buck PWM converters  
integrate all required active components. Included on  
the substrate with the listed features are a true, high  
performance, voltage error amplifier that provides fast  
response 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 currents; and a power good output  
useful for processor/logic reset, fault signaling and  
supply sequencing.  
0.9-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V and 3.3-V Fixed  
Output Voltage Devices With 1% Initial  
Accuracy  
Internally Compensated for Ease of Use and  
Minimal Component Count  
D
Fast Transient Response  
D
Wide PWM Frequency—Fixed 350 kHz,  
550 kHz or Adjustable 280 kHz to 700 kHz  
D
D
Load Protected by Peak Current Limit and  
Thermal Shutdown  
The TPS54311-6 devices are available in a thermally  
enhanced 20-pin TSSOP (PWP) PowerPAD  
package, which eliminates bulky heatsinks. TI provides  
evaluationmodulesandtheSWIFT designersoftware  
tool to aid in quickly achieving high-performance power  
supply designs to meet aggressive equipment  
development cycles.  
Integrated Solution Reduces Board Area and  
Total Cost  
APPLICATIONS  
D
D
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  
EFFICIENCY  
vs  
LOAD CURRENT  
100  
D
D
Broadband, Networking, and Optical  
Communications Infrastructure  
90  
80  
70  
Portable Computing/Notebook PCs  
Simplified Schematic  
Input  
Output  
VIN  
PH  
TPS54316  
V = 5 V  
60  
50  
I
V
= 3.3 V  
O
BOOT  
PGND  
f = 350 kHz  
0
0.5  
1
1.5  
2
2.5  
3
3.5  
VBIAS  
VSENSE  
Load Current – A  
GND  
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.  
SWIFT and PowerPAD 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, Texas Instruments Incorporated  
1
www.ti.com  
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