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TPS5420DRG4 PDF预览

TPS5420DRG4

更新时间： 2024-09-18 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
20页 464K
描述
2-A, WIDE INPUT RANGE, STEP-DOWN SWIFT CONVERTER

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TPS5420DRG4 数据手册

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TPS5420  
www.ti.com  
SLVS642A–APRIL 2006–REVISED AUGUST 2006  
2-A, WIDE INPUT RANGE, STEP-DOWN SWIFT™ CONVERTER  
FEATURES  
APPLICATIONS  
•
•
•
•
Consumer: Set-top Box, DVD, LCD Displays  
Industrial and Car Audio Power Supplies  
Battery Chargers, High Power LED Supply  
12-V/24-V Distributed Power Systems  
•
Wide Input Voltage Range: 5.5 V to 36 V  
•
Up to 2-A Continuous (3-A Peak) Output  
Current  
•
•
•
•
•
•
•
High Efficiency up to 95% Enabled by 110-mΩ  
Integrated MOSFET Switch  
DESCRIPTION  
Wide Output Voltage Range: Adjustable  
Down to 1.22 V with 1.5% Initial Accuracy  
As a member of the SWIFT™ family of DC/DC  
regulators, the TPS5420 is a high-output-current  
PWM converter that integrates a low resistance high  
side N-channel MOSFET. Included on the substrate  
with the listed features is a high performance voltage  
error amplifier that provides tight voltage regulation  
Internal Compensation Minimizes External  
Parts Count  
Fixed 500-kHz Switching Frequency for Small  
Filter Size  
accuracy  
under  
transient  
conditions;  
an  
Improved Line Regulation and Transient  
Response by Input Voltage Feed Forward  
undervoltage-lockout circuit to prevent start-up until  
the input voltage reaches 5.5 V; an internally set  
slow-start circuit to limit inrush currents; and a  
voltage feed-forward circuit to improve the transient  
response. Using the ENA pin, shutdown supply  
current is reduced to 18 µA typically. Other features  
include an active high enable, overcurrent protection  
and thermal shutdown. To reduce design complexity  
and external component count, the TPS5420  
feedback loop is internally compensated.  
System Protected by Overcurrent Limiting  
and Thermal Shutdown  
–40°C to 125°C Operating Junction  
Temperature Range  
•
•
Available in Small 8-Pin SOIC Package  
For SWIFT Documentation, Application Notes  
and Design Software, See the TI Website at  
www.ti.com/swift  
The TPS5420 device is available in an easy to use  
8-pin SOIC package. 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.  
SIMPLIFIED SCHEMATIC  
Efficiency vs Output Current  
100  
95  
VIN  
VOUT  
VIN  
PH  
TPS5420  
90  
85  
80  
75  
70  
65  
60  
BOOT  
NC  
NC  
VI = 12 V  
VSENSE  
ENA  
GND  
55  
50  
0
0.5  
1
1.5  
2
2.5  
3
I
− Output Current− A  
O
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 is a trademark 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 © 2006, Texas Instruments Incorporated  
1234567...20

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TPS5420DRG4 替代型号

型号 品牌 替代类型 描述 数据表
TPS5420DG4 TI

完全替代

 2-A, WIDE INPUT RANGE, STEP-DOWN SWIFT CONVERTER
TPS5420D TI

完全替代

 2-A, WIDE INPUT RANGE, STEP-DOWN SWIFT CONVERTER
TPS5420DR TI

类似代替

 2-A, WIDE INPUT RANGE, STEP-DOWN SWIFT CONVERTER

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