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TPS62403-Q1

更新时间： 2024-09-28 11:58:27
品牌 Logo 应用领域
德州仪器 - TI 转换器
页数 文件大小 规格书
41页 1443K
描述
2.25-MHz 400-mA/600-mA DUAL STEP-DOWN CONVERTER

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TPS62403-Q1 数据手册

 浏览型号TPS62403-Q1的Datasheet PDF文件第2页浏览型号TPS62403-Q1的Datasheet PDF文件第3页浏览型号TPS62403-Q1的Datasheet PDF文件第4页浏览型号TPS62403-Q1的Datasheet PDF文件第5页浏览型号TPS62403-Q1的Datasheet PDF文件第6页浏览型号TPS62403-Q1的Datasheet PDF文件第7页 
TPS62400-Q1, TPS62401-Q1  
TPS62402-Q1, TPS62403-Q1  
TPS62404-Q1  
www.ti.com  
SLVSA67 –FEBRUARY 2010  
2.25-MHz 400-mA/600-mA DUAL STEP-DOWN CONVERTER  
Check for Samples: TPS62404-Q1  
1
FEATURES  
•
•
•
•
•
•
•
Qualified for Automotive Applications  
•
•
•
•
•
EasyScale™ Optional One-Pin Serial Interface  
High Efficiency—Up to 95%  
Power Save Mode at Light Load Currents  
180° Out of Phase Operation  
VIN Range From 2.5 V to 6 V  
2.25-MHz Fixed Frequency Operation  
Output Current 400 mA and 600 mA  
Adjustable Output Voltage From 0.6 V to VIN  
Output Voltage Accuracy in PWM Mode ±1%  
Typical 32-mA Quiescent Current for Both  
Converters  
•
•
100% Duty Cycle for Lowest Dropout  
Available in a 10-Pin QFN (3mm×3mm)  
Pin Selectable Output Voltage Supports  
Simple Dynamic Voltage Scaling  
DESCRIPTION  
The TPS6240x device series are synchronous dual step-down DC-DC converters optimized for battery powered  
portable applications. They provide two independent output voltage rails powered by 1-cell Li-Ion or 3-cell  
NiMH/NiCD batteries. The devices are also suitable to operate from a standard 3.3-V or 5-V voltage rail.  
With the EasyScale™ serial interface the output voltages can be modified during operation. The fixed output  
voltage versions TPS62401, TPS62402, TPS62403, and TPS62404 support one pin controlled simple Dynamic  
Voltage Scaling for low power processors.  
The TPS6240x operates at 2.25-MHz fixed switching frequency 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/DATA pin high. In the shutdown  
mode, the current consumption is reduced to 1.2-mA, typical. The devices allow the use of small inductors and  
capacitors to achieve a small solution size.  
The TPS62400 is available in a 10-pin leadless package (3mm×3mm QFN)  
100  
TPS62404  
VIN 2.5 V – 6 V  
90  
VIN  
FB 1  
2.2 mH  
V
: 1.575 V  
out1  
400 mA  
10 mF  
80  
70  
60  
50  
40  
30  
20  
10  
0
SW1  
V
OUT2  
= 1.8 V  
V
= 3.6 V  
MODE/DATA = 0  
DEF_1  
IN  
10 mF  
EN_1  
EN_2  
V
OUT1  
= 1.575 V  
2.2 mH  
V
: 3.3 V  
out2  
600 mA  
SW2  
MODE/  
DATA  
10 mF  
ADJ2  
GND  
0.01  
0.1  
1
10  
100  
1000  
I
OUT  
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.  
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 © 2010, Texas Instruments Incorporated  
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