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TPS62261-Q1 PDF预览

TPS62261-Q1

更新时间： 2024-09-25 12:21:51
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 1318K
描述
2.25-MHz 600-mA STEP-DOWN CONVERTERS

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TPS62261-Q1 数据手册

 浏览型号TPS62261-Q1的Datasheet PDF文件第2页浏览型号TPS62261-Q1的Datasheet PDF文件第3页浏览型号TPS62261-Q1的Datasheet PDF文件第4页浏览型号TPS62261-Q1的Datasheet PDF文件第5页浏览型号TPS62261-Q1的Datasheet PDF文件第6页浏览型号TPS62261-Q1的Datasheet PDF文件第7页 
TPS62260-Q1, TPS62261-Q1  
TPS62262-Q1, TPS62263-Q1  
www.ti.com  
SLVSA16C –AUGUST 2009–REVISED JULY 2012  
2.25-MHz 600-mA STEP-DOWN CONVERTERS  
Check for Samples: TPS62260-Q1, TPS62261-Q1, TPS62262-Q1, TPS62263-Q1  
1
FEATURES  
2
•
•
•
•
Qualified for Automotive Applications  
High-Efficiency Step-Down Converter  
Output Current up to 600 mA  
•
•
•
•
Soft Start  
Voltage Positioning at Light Loads  
Available in a Small 2×2×0,8-mm SON Package  
Allows <1-mm Solution Height  
Wide VIN Range from 2-V to 6-V for Li-Ion  
Batteries with Extended Voltage Range  
APPLICATIONS  
•
•
•
•
•
2.25-MHz Fixed Frequency Operation  
Power Save Mode at Light Load Currents  
Output Voltage Accuracy in PWM Mode ±1.5%  
15-μA (Typ) Quiescent Current  
•
•
•
•
PDAs, Pocket PCs  
Low Power DSP Supply  
Portable Media Players  
POL applications  
100% Duty Cycle for Lowest Dropout  
DESCRIPTION  
The TPS6226x devices are high-efficiency synchronous step-down dc-dc converters 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.  
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.  
The TPS6226x 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.  
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 1 μA. TPS6226x allows the use of small inductors and capacitors to achieve  
a small solution size.  
The TPS6226x is available in a very small 2×2mm 6-pin SON package.  
100  
90  
80  
70  
60  
50  
40  
30  
20  
L
TPS62260DRV  
VIN = 2V to 6V  
VIN = 2.3 V  
VIN = 2.7 V  
Up to 600mA  
2.2 mH  
V
V
IN  
SW  
FB  
OUT  
C
1
22 pF  
C
C
R
OUT  
IN  
1
EN  
V
IN = 3 V  
10 mF  
4.7 mF  
VIN = 3.6 V  
VIN = 4.5 V  
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  
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
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 © 2009–2012, Texas Instruments Incorporated  
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