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TPS74801TDRCRQ1

更新时间： 2024-11-23 12:04:47
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德州仪器 - TI 稳压器软启动
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28页 1084K
描述
1.5A Low-Dropout Linear Regulator with Programmable Soft-Start

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TPS74801TDRCRQ1 数据手册

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TPS74801  
www.ti.com  
SBVS074J –JANUARY 2007–REVISED JANUARY 2012  
1.5A Low-Dropout Linear Regulator with Programmable Soft-Start  
Check for Samples: TPS74801  
1
FEATURES  
2
•
•
•
•
•
VOUT Range: 0.8V to 3.6V  
DESCRIPTION  
The TPS74801 low-dropout (LDO) linear regulator  
provides an easy-to-use robust power management  
Ultralow VIN Range: 0.8V to 5.5V  
VBIAS Range 2.7V to 5.5V  
solution for  
a
wide variety of applications.  
Low Dropout: 60mV typ at 1.5A, VBIAS = 5V  
User-programmable soft-start minimizes stress on the  
input power source by reducing capacitive inrush  
current on start-up. The soft-start is monotonic and  
well-suited for powering many different types of  
processors and ASICs. The enable input and power  
good output allow easy sequencing with external  
regulators. This complete flexibility permits the user to  
configure a solution that meets the sequencing  
requirements of FPGAs, DSPs, and other  
applications with special start-up requirements.  
Power Good (PG) Output Allows Supply  
Monitoring or Provides a Sequencing Signal  
for Other Supplies  
•
•
2% Accuracy Over Line/Load/Temperature  
Programmable Soft-Start Provides Linear  
Voltage Startup  
•
VBIAS Permits Low VIN Operation with Good  
Transient Response  
•
•
Stable with Any Output Capacitor ≥ 2.2μF  
A precision reference and error amplifier deliver 2%  
accuracy over load, line, temperature, and process.  
The device is stable with any type of capacitor  
greater than or equal to 2.2μF, and is fully specified  
from –40°C to +125°C. The TPS74801 is offered in a  
small 3mm × 3mm SON-10 package, yielding a highly  
compact, total solution size. It is also available in a 5  
x 5 QFN-20 for compatibility with the TPS74401.  
Available in a Small 3mm x 3mm x 1mm  
SON-10 and 5 x 5 QFN-20 Packages  
APPLICATIONS  
•
•
•
•
FPGA Applications  
DSP Core and I/O Voltages  
Post-Regulation Applications  
Applications with Special Start-Up Time or  
Sequencing Requirements  
•
Hot-Swap and Inrush Controls  
CSS = 0nF  
CSS = 1nF  
CSS = 2.2nF  
0.5V/div  
VOUT  
VIN  
IN  
PG  
R3  
R1  
CIN  
BIAS  
EN  
SS  
VOUT  
OUT  
TPS74801  
1.2V  
VEN  
VBIAS  
COUT  
0V  
FB  
1V/div  
GND  
CBIAS  
CSS  
R2  
Time (1ms/div)  
Figure 2. Turn-On Response  
Figure 1. Typical Application Circuit (Adjustable)  
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.  
All trademarks are the property of their respective owners.  
2
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 © 2007–2012, Texas Instruments Incorporated  
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TPS74801TDRCRQ1 替代型号

型号 品牌 替代类型 描述 数据表
TPS74801DRCRG4 TI

类似代替

 1.5A Low-Dropout Linear Regulator with Programmable Soft-Start
TPS74801DRCT TI

类似代替

 1.5A LDO Linear Regulator with Programmable Soft-Start
TPS74801DRCR TI

类似代替

 1.5A LDO Linear Regulator with Programmable Soft-Start

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 		具有电源正常指示和使能功能的汽车类 1.5A、0.8V 低噪声可调节 LDO 稳压器
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 		3.0A Low Dropout Linear Regulator with Programmable Soft-Start
TPS74901DRCR TI

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 		具有电源正常指示和使能功能的 3A、低输入电压 (0.8V)、可调节超低压降稳压器 | D
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TPS74901KTWR TI

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 		3.0A Low Dropout Linear Regulator with Programmable Soft-Start

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