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TPS61097

更新时间： 2024-09-23 07:04:47
品牌 Logo 应用领域
德州仪器 - TI 转换器输入元件升压转换器
页数 文件大小 规格书
27页 730K
描述
LOW INPUT VOLTAGE SYNCHRONOUS BOOST CONVERTER WITH LOW QUIESCENT CURRENT

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TPS61097 数据手册

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TPS61097  
www.ti.com .............................................................................................................................................................. SLVS872A–JUNE 2009–REVISED JULY 2009  
LOW INPUT VOLTAGE SYNCHRONOUS BOOST CONVERTER  
WITH LOW QUIESCENT CURRENT  
1
FEATURES  
•
Up to 95% Efficiency at Typical Operating  
Conditions  
•
•
Overtemperature Protection  
Small 2.8-mm x 2.9-mm 5-Pin SOT-23 Package  
•
Connection from Battery to Load via Bypass  
Switch in Shutdown Mode  
APPLICATIONS  
•
•
MSP430 Applications  
•
•
•
Typical Shutdown Current Less Than 5 nA  
All Single-Cell, Two-Cell, and Three-Cell  
Alkaline, NiCd, NiMH, or Single-Cell Li-Battery  
Powered Products  
Personal Medical Products  
Fuel Cell and Solar Cell Powered Products  
PDAs  
Typical Quiescent Current Less Than 5 µA  
Operating Input Voltage Range  
From 0.9 V to 5.5 V  
•
•
•
•
•
•
•
Fixed Output Voltage Options  
From 1.8 V to 5.0 V  
Power-Save Mode for Improved Efficiency at  
Low Output Power  
Mobile Applications  
White LEDs  
DESCRIPTION  
The TPS61097 provide a power supply solution for products powered by either a single-cell, two-cell, or  
three-cell alkaline, NiCd, or NiMH, or one-cell Li-Ion or Li-polymer battery. They can also be used in fuel cell or  
solar cell powered devices where the capability of handling low input voltages is essential. Possible output  
currents depend on the input-to-output voltage ratio. The devices provides output currents up to 100 mA at a  
3.3-V output while using a single-cell Li-Ion or Li-Polymer battery. The boost converter is based on a  
current-mode controller using synchronous rectification to obtain maximum efficiency. The maximum average  
input current is limited to a value of 350 mA. The output voltage can be programmed by an external resistor  
divider, or it is fixed internally on the chip. The converter can be disabled to minimize battery drain. During  
shutdown, the battery is connected to the load to enable battery backup of critical functions on the load. The  
device is packaged in a 5-pin SOT-23 package (DBV) measuring 2.8 mm × 2.9 mm.  
TPS61097-33  
VOUT  
3.3 V  
L
VOUT  
L1  
C2  
VIN  
VIN  
0.9 V to 3.3 V  
C1  
EN  
GND  
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 © 2009, Texas Instruments Incorporated  
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