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TPS54383PWPG4

更新时间： 2024-11-08 04:27:31
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德州仪器 - TI 转换器
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52页 1214K
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3-A DUAL NON-SYNCHRONOUS CONVERTER WITH INTEGRATED HIGH-SIDE MOSFET

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TPS54383, TPS54386  
www.ti.com  
SLUS774B–AUGUST 2007–REVISED OCTOBER 2007  
3-A DUAL NON-SYNCHRONOUS CONVERTER WITH INTEGRATED HIGH-SIDE MOSFET  
1
FEATURES  
CONTENTS  
23  
•
4.5-V to 28-V Input Range  
Device Ratings  
2
3
•
Output Voltage Range 0.8 V to 90% of Input  
Voltage  
Electrical Characteristics  
Device Information  
Application Information  
Design Examples  
9
•
•
Output Current Up to 3 A  
12  
32  
44  
Two Fixed Switching Frequency Versions:  
–
–
TPS54383: 300 kHz  
TPS54386: 600 kHz  
Additional References  
•
Three Selectable Levels of Overcurrent  
Protection (Output 2)  
DESCRIPTION  
•
•
•
•
0.8-V 1.5% Voltage Reference  
2.1-ms Internal Soft Start  
The TPS54383 and TPS54386 are dual output,  
non-synchronous buck converters capable of  
supporting 3-A output applications that operate from a  
4.5-V to 28-V input supply voltage, and require output  
voltages between 0.8 V and 90% of the input voltage.  
Dual PWM Outputs 180° Out-of-Phase  
Ratiometric or Sequential Startup Modes  
Selectable by a Single Pin  
With an internally-determined operating frequency,  
soft start time, and control loop compensation, these  
converters provide many features with a minimum of  
•
•
•
•
•
•
85-mΩ Internal High-Side MOSFETs  
Current Mode Control  
Internal Compensation (See Page 16)  
Pulse-by-Pulse Overcurrent Protection  
Thermal Shutdown Protection at +148°C  
14-Pin PowerPAD™ HTSSOP package  
external components. Channel  
1
overcurrent  
protection is set at 4.5 A, while Channel 2 overcurrent  
protection level is selected by connecting a pin to  
ground, to BP, or left floating. The setting levels are  
used to allow for scaling of external components for  
applications that do not need the full load capability of  
both outputs.  
APPLICATIONS  
•
•
•
•
Set Top Box  
Digital TV  
Power for DSP  
Consumer Electronics  
The outputs may be enabled independently, or may  
be configured to allow either ratiometric or sequential  
startup sequencing. Additionally, the two outputs may  
be powered from different sources.  
V
IN  
TPS54383  
1
2
3
4
5
6
7
PVDD1 PVDD2 14  
BOOT1 BOOT2 13  
OUTPUT1  
OUTPUT2  
SW1  
GND  
EN1  
EN2  
FB1  
SW2 12  
BP 11  
SEQ 10  
ILIM2  
FB2  
9
8
GND  
UDG-07123  
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
3
PowerPAD is a trademark of Texas Instruments.  
All other trademarks are the property of their respective owners.  
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  
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TPS54383PWPG4 替代型号

型号 品牌 替代类型 描述 数据表
TPS54383PWPRG4 TI

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