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TPS5410_17

更新时间： 2024-09-19 02:58:19
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
25页 910K
描述
1-A, Wide Input Range, Step-Down Converter

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TPS5410_17 数据手册

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TPS5410-Q1  
www.ti.com......................................................................................................................................................................................... SLVSA23 –SEPTEMBER 2009  
1-A, WIDE INPUT RANGE, STEP-DOWN SWIFT™ CONVERTER  
Check for Samples: TPS5410-Q1  
1
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  
2
•
Qualified for Automotive Applications  
•
•
Wide Input Voltage Range: 5.5 V to 36 V  
Up to 1-A Continuous (1.2-A Peak) Output  
Current  
•
•
•
•
•
•
High Efficiency up to 95% Enabled by 110-mΩ  
Integrated MOSFET Switch  
DESCRIPTION  
As a member of the SWIFT™ family of DC/DC  
regulators, the TPS5410 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  
Wide Output Voltage Range: Adjustable Down  
to 1.22 V with 1.5% Initial Accuracy  
Internal Compensation Minimizes External  
Parts Count  
Fixed 500-kHz Switching Frequency for Small  
Filter Size  
accuracy  
under  
transient  
conditions;  
an  
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 limiting,  
overvoltage protection and thermal shutdown. To  
reduce design complexity and external component  
count, the TPS5410 feedback loop is internally  
compensated.  
Improved Line Regulation and Transient  
Response by Input Voltage Feed Forward  
System Protected by Over Current Limiting,  
Over Voltage Protection 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 TPS5410 device is available in an easy to use  
8-pin SOIC package. TI provides evaluation modules  
and software tools to aid in quickly achieving  
high-performance power supply designs to meet  
aggressive equipment development cycles.  
Simplified Schematic  
Efficiency vs Output Current  
100  
VIN  
VOUT  
VIN  
PH  
TPS5410  
95  
90  
85  
BOOT  
NC  
NC  
VSENSE  
ENA  
VI = 20 V  
VO = 12 V  
GND  
80  
fs = 500 kHz  
TA = 25oC  
75  
0
0.2 0.4 0.6 0.8  
1
1.2 1.4  
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
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 © 2009, Texas Instruments Incorporated  
1234567...25

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