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TPS62261

更新时间： 2024-09-25 04:48:47
品牌 Logo 应用领域
德州仪器 - TI 转换器
页数 文件大小 规格书
32页 1206K
描述
2.25 MHz 600 mA Step Down Converter in 2x2SON/TSOT-23 Package

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TPS62261 数据手册

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TPS62260, TPS62261, TPS62262  
www.ti.com  
SLVS763–JUNE 2007  
2.25 MHz 600 mA Step Down Converter in 2x2SON/TSOT-23 Package  
FEATURES  
DESCRIPTION  
•
•
•
High Efficiency Step Down Converter  
The TPS62260 device is a high efficient synchronous  
step down dc-dc converter optimized for battery  
powered applications. It provides up to 600-mA  
output current from a single Li-Ion cell and is ideal to  
power mobile phones and other portable  
applications.  
Output Current up to 600 mA  
Wide VIN Range from 2 V to 6 V for Li-Ion  
Batteries with Extended Voltage Range  
•
•
•
•
•
•
•
•
2.25 MHz Fixed Frequency Operation  
Power Save Mode at Light Load Currents  
Output Voltage Accuracy in PWM mode ±1.5%  
Typ. 15 µA Quiescent Current  
With an wide input voltage range of 2 V to 6 V, the  
device supports applications powered by Li-Ion  
batteries with extended voltage range, two and three  
cell alkaline batteries, 3.3 V and 5 V input voltage  
rails.  
100% Duty Cycle for Lowest Dropout  
Soft Start  
The TPS62260 operates at 2.25 MHz fixed switching  
frequency and enters Power Save Mode operation at  
light load currents to maintain high efficiency over  
the entire load current range.  
Voltage Positioning at Light Loads  
Available in a small 2×2×0,8mm SON and  
TSOT-23 package  
•
Allows <1mm Solution Height  
The Power Save Mode is optimized for low output  
voltage ripple. For low noise applications, the device  
can be forced into fixed frequency PWM mode by  
pulling the MODE pin high. In the shutdown mode,  
the current consumption is reduced to less than 1µA.  
TPS62260 allows the use of small inductors and  
capacitors to achieve a small solution size.  
APPLICATIONS  
•
•
•
•
PDAs, Pocket PCs  
Low Power DSP Supply  
Portable Media Players  
POL applications  
The TPS62260 is available in a very small 2×2 6 pin  
SON and TSOT-23 5 pin package.  
L
100  
TPS62260DRV  
V
VIN = 2.3 V  
2.2 mH  
V
IN  
90  
SW  
OUT  
VIN = 2.7 V  
C
1
22 pF  
C
C
R
OUT  
10 mF  
IN  
1
EN  
V
IN = 3 V  
80  
70  
60  
50  
40  
30  
20  
4.7 mF  
VIN = 3.6 V  
VIN = 4.5 V  
FB  
GND  
R
2
MODE  
VOUT = 1.8 V,  
MODE = GND,  
L = 2.2 mH,  
DCR 110 mR  
10  
0
0.01  
0.1  
1
10  
100  
1000  
IO - Output Current - mA  
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.  
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  
1234567...32

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TPS62261 替代型号

型号 品牌 替代类型 描述 数据表
TPS62263 TI

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