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TPS62042

更新时间： 2024-11-16 22:36:51
品牌 Logo 应用领域
德州仪器 - TI 转换器功效
页数 文件大小 规格书
21页 370K
描述
1.2 A/1.25 MHZ, HIGH EFFICIENCY STEP DOWN CONVERTER

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TPS62042 数据手册

 浏览型号TPS62042的Datasheet PDF文件第2页浏览型号TPS62042的Datasheet PDF文件第3页浏览型号TPS62042的Datasheet PDF文件第4页浏览型号TPS62042的Datasheet PDF文件第5页浏览型号TPS62042的Datasheet PDF文件第6页浏览型号TPS62042的Datasheet PDF文件第7页 
ꢀꢁ ꢂ ꢃꢄ ꢅꢆ ꢅ  
ꢀ ꢁꢂꢃ ꢄ ꢅ ꢆ ꢄ ꢇ ꢀ ꢁ ꢂꢃ ꢄꢅ ꢆꢈ  
www.ti.com  
ꢀ ꢁꢂꢃ ꢄ ꢅ ꢆ ꢆ ꢇ ꢀ ꢁ ꢂꢃ ꢄꢅ ꢆꢃ  
SLVS463A − JUNE 2003 − REVISED OCTOBER 2003  
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D
D
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USB Powered Modems  
CPUs and DSPs  
FEATURES  
D
D
D
D
D
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D
Up to 95% Conversion Efficiency  
Typical Quiescent Current: 18 µA  
Load Current: 1.2 A  
PC Cards and Notebooks  
xDSL Applications  
Standard 5-V to 3.3-V Conversion  
Operating Input Voltage Range: 2.5 V to 6.0 V  
Switching Frequency: 1.25 MHz  
DESCRIPTION  
Adjustable and Fixed Output Voltage  
The TPS6204x family of devices are high efficiency  
synchronous step-down dc-dc converters optimized for  
battery powered portable applications. The devices are  
ideal for portable applications powered by a single Li-Ion  
battery cell or by 3-cell NiMH/NiCd batteries. With an  
output voltage range from 6.0 V down to 0.7 V, the devices  
support low voltage DSPs and processors in PDAs,  
pocket PCs, as well as notebooks and subnotebook  
computers. The TPS6204x operates at a fixed switching  
frequency of 1.25 MHz and enters the power save mode  
operation at light load currents to maintain high efficiency  
over the entire load current range. For low noise  
applications, the devices can be forced into fixed  
frequency PWM mode by pulling the MODE pin high. The  
TPS6204x supports up to 1.2-A load current.  
Power Save Mode Operation at Light load  
Currents  
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100% Duty Cycle for Lowest Dropout  
Internal Softstart  
Dynamic Output Voltage Positioning  
Thermal Shutdown  
Short-Circuit Protection  
10 Pin MSOP PowerPadPackage  
10 Pin QFN 3 X 3 mm Package  
APPLICATIONS  
D
PDA, Pocket PC and Smart Phones  
EFFICIENCY  
vs  
LOAD CURRENT  
100  
V
= 1.8 V  
O
Typical Application Circuit 1.2-A Output Current  
95  
90  
85  
80  
75  
70  
65  
60  
55  
50  
45  
40  
V
= 2.7 V  
= 3.6 V  
I
V
I
V
TPS6204x  
SW  
V
O
I
I
L1  
6.2 µH  
0.7 V to V /1.2 A  
2.5 V to 6 V  
V = 5 V  
I
8
7
2
3
1
6
4
VIN  
SW  
FB  
VIN  
C1  
22 µF  
C2  
22 µF  
5
EN  
10  
PGND  
MODE  
GND  
MODE = Low  
9
PGND  
V
= 3.6 V  
I
MODE = High  
0
0.01  
0.1  
1
10  
100 1 k  
10 k  
I
− Load Current − mA  
L
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.  
PowerPAD is a trademark of Texas Instruments.  
ꢁꢝ ꢚ ꢙꢞ ꢖ ꢀꢑ ꢚꢗ ꢙ ꢋꢀꢋ ꢟꢠ ꢡꢢ ꢣ ꢤꢥ ꢦꢟꢢꢠ ꢟꢧ ꢨꢩ ꢣ ꢣ ꢪꢠꢦ ꢥꢧ ꢢꢡ ꢫꢩꢬ ꢭꢟꢨ ꢥꢦꢟ ꢢꢠ ꢮꢥ ꢦꢪꢊ ꢁꢣ ꢢꢮꢩ ꢨꢦꢧ  
ꢨ ꢢꢠ ꢡꢢꢣ ꢤ ꢦꢢ ꢧ ꢫꢪ ꢨ ꢟ ꢡꢟ ꢨ ꢥ ꢦꢟ ꢢꢠꢧ ꢫ ꢪꢣ ꢦꢯꢪ ꢦꢪ ꢣ ꢤꢧ ꢢꢡ ꢀꢪꢰ ꢥꢧ ꢑꢠꢧ ꢦꢣ ꢩꢤ ꢪꢠꢦ ꢧ ꢧꢦ ꢥꢠꢮ ꢥꢣ ꢮ ꢱ ꢥꢣ ꢣ ꢥ ꢠꢦꢲꢊ  
ꢁꢣ ꢢ ꢮꢩꢨ ꢦ ꢟꢢ ꢠ ꢫꢣ ꢢ ꢨ ꢪ ꢧ ꢧ ꢟꢠ ꢳ ꢮꢢ ꢪ ꢧ ꢠꢢꢦ ꢠꢪ ꢨꢪ ꢧꢧ ꢥꢣ ꢟꢭ ꢲ ꢟꢠꢨ ꢭꢩꢮ ꢪ ꢦꢪ ꢧꢦꢟ ꢠꢳ ꢢꢡ ꢥꢭ ꢭ ꢫꢥ ꢣ ꢥꢤ ꢪꢦꢪ ꢣ ꢧꢊ  
Copyright 2003, Texas Instruments Incorporated  
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中文翻译

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TPS62042 替代型号

型号 品牌 替代类型 描述 数据表
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