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TPS742105RGWR PDF预览

TPS742105RGWR

更新时间: 2024-11-06 20:04:15
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德州仪器 - TI /
页数 文件大小 规格书
28页 1007K
描述
Single Output LDO, 1.5A, Fixed (1.05V), Fast Transient Response, Programmable SoftStart 20-VQFN -40 to 125

TPS742105RGWR 技术参数

是否无铅: 含铅生命周期:Obsolete
Reach Compliance Code:unknown风险等级:5.84
Base Number Matches:1

TPS742105RGWR 数据手册

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TPS742xx  
www.ti.com  
SBVS064L DECEMBER 2005REVISED NOVEMBER 2010  
1.5A Ultra-LDO with Programmable Soft-Start  
Check for Samples: TPS742xx  
1
FEATURES  
DESCRIPTION  
2
Soft-Start (SS) Pin Provides a Linear Startup  
with Ramp Time Set by External Capacitor  
The TPS742xx low-dropout (LDO) linear regulators  
provide an easy-to-use robust power management  
1% Accuracy Over Line, Load, and  
Temperature  
solution for  
a
wide variety of applications.  
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 will meet the  
sequencing requirements of FPGAs, DSPs, and other  
applications with special start-up requirements.  
Supports Input Voltages as Low as 0.9V with  
External Bias Supply  
Adjustable Output (0.8V to 3.6V)  
Fixed Output (0.9V to 3.6V)  
Ultra-Low Dropout: 55mV at 1.5A (typ)  
Stable with Any or No Output Capacitor  
Excellent Transient Response  
Available in 5mm × 5mm × 1mm QFN and  
DDPAK-7 Packages  
A precision reference and error amplifier deliver 1%  
accuracy over load, line, temperature, and process.  
Each LDO is stable with low-cost ceramic output  
capacitors and the family is fully specified from –40°C  
to +125°C. The TPS742xx is offered in a small (5mm  
× 5mm) QFN package, yielding a highly compact total  
solution size. For applications that require additional  
power dissipation, the DDPAK (KTW) package is also  
available.  
Open-Drain Power-Good (5 × 5 QFN)  
Active High Enable  
APPLICATIONS  
FPGA Applications  
DSP Core and I/O Voltages  
Post-Regulation Applications  
Applications with Special Start-Up Time or  
Sequencing Requirements  
ADJUSTABLE VOLTAGE VERSION  
VIN  
IN  
PG  
CIN  
1mF  
Hot-Swap and Inrush Controls  
R3  
R1  
BIAS  
EN  
SS  
VOUT  
OUT  
TPS74201  
VBIAS  
COUT  
CBIAS  
1mF  
FB  
GND  
CSS  
R2  
CSS = 0mF  
VOUT  
Optional  
CSS = 0.001mF  
CSS = 0.0047mF  
1V/div  
FIXED VOLTAGE VERSION  
VIN  
IN  
PG  
CIN  
1mF  
R3  
BIAS  
EN  
VOUT  
OUT  
1.2V  
TPS742xx  
VEN  
VBIAS  
1V/div  
SS  
0V  
COUT  
CBIAS  
1mF  
SNS  
GND  
CSS  
Time (1ms/div)  
Optional  
Figure 1. Turn-On Response  
Figure 2. Typical Application Circuits  
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
All 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 © 2005–2010, Texas Instruments Incorporated  

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