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TPS62590-Q1

更新时间： 2024-10-02 12:47:11
品牌 Logo 应用领域
德州仪器 - TI 转换器
页数 文件大小 规格书
25页 833K
描述
1-A Step-Down Converter in 2-mm × 2-mm QFN Package

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中文翻译

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TPS62590-Q1 数据手册

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TPS62590-Q1  
www.ti.com  
SLVSAO5A –DECEMBER 2010–REVISED APRIL 2012  
1-A Step-Down Converter in 2-mm × 2-mm QFN Package  
Check for Samples: TPS62590-Q1  
1
FEATURES  
DESCRIPTION  
The TPS62590-Q1 device is  
a
high-efficiency  
•
•
•
•
•
•
•
Qualified for Automotive Applications  
Output Current up to 1000 mA  
synchronous step-down converter, optimized for  
battery-powered portable applications. It provides up  
to 1000-mA output current from batteries, such as  
single Li-Ion or other common-chemistry AA and AAA  
cells.  
Input Voltage Range from 2.5 V to 6 V  
Output Voltage Accuracy in PWM mode ±2.5%  
Typ. 15-μA Quiescent Current  
With an input voltage range of 2.5 V to 6 V, the  
device is targeted to power a large variety of portable  
handheld equipment or POL applications.  
100% Duty Cycle for Lowest Dropout  
Available in a 2-mm × 2-mm × 0,8-mm QFN  
Package  
The TPS62590-Q1 family operates at a 2.25-MHz  
fixed switching frequency and enters a power-save  
mode at light load currents to maintain a high  
efficiency over the entire load current range.  
•
For Improved Features Set, See TPS62290  
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.  
The TPS62590-Q1 allows the use of small inductors  
and capacitors to achieve a small solution size.  
The TPS62590-Q1 is available in a 2-mm × 2-mm 6-  
pin QFN package.  
Empty para  
100  
90  
TPS62590DRV  
VIN  
L
2.2 mH  
5
V
1
IN  
SW  
V
OUT  
2.5 V to 5.5 V  
V = 5 V  
80  
70  
60  
I
4
2
0.75 V to V  
IN  
V = 4.2 V  
I
EN  
R1  
CIN  
C1  
22pF  
3
6
FB  
V = 3.8 V  
I
10mF  
MODE  
COUT  
10mF  
GND  
50  
R2  
40  
30  
20  
10  
PwrPAD  
VOUT = 3.3 V,  
MODE = GND,  
0
0.0001  
0.001  
0.01  
- Output Current - A  
0.1  
1
I
Typical Application  
O
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.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2010–2012, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
1234567...25

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TPS62590-Q1 替代型号

型号 品牌 替代类型 描述 数据表
TPS62293-Q1 TI

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