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TPS6107X

更新时间： 2024-01-12 04:06:13
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德州仪器 - TI 转换器开关升压转换器
页数 文件大小 规格书
21页 488K
描述
90% EFFICIENT SYNCHRONOUS BOOST CONVERTER WITH 600-mA SWITCH

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TPS6107X 数据手册

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TPS61070, TPS61071  
TPS61072, TPS61073  
www.ti.com  
SLVS510A–JULY 2006–REVISED JANUARY 2007  
90% EFFICIENT SYNCHRONOUS BOOST CONVERTER WITH 600-mA SWITCH  
FEATURES  
DESCRIPTION  
•
90% Efficient Synchronous Boost Converter  
The TPS6107x devices provide a power supply  
solution for products powered by either a one-cell,  
two-cell, or three-cell alkaline, NiCd or NiMH, or  
one-cell Li-ion or Li-polymer battery. Output currents  
can go as high as 75 mA while using a single-cell  
alkaline, and discharge it down to 0.9 V. It can also  
be used for generating 5 V at 200 mA from a 3.3 V  
rail or a Li-ion battery. The boost converter is based  
on a fixed frequency, pulse-width-modulation (PWM)  
controller using a synchronous rectifier to obtain  
maximum efficiency. At low load currents the  
TPS61070 and TPS61073(1) enter the power-save  
mode to maintain a high efficiency over a wide load  
current range. The power-save mode is disabled in  
the TPS61071 and TPS61072, forcing the converters  
to operate at a fixed switching frequency. The  
maximum peak current in the boost switch is typically  
limited to a value of 600 mA.  
–
–
75-mA Output Current at 3.3 V From 0.9-V  
Input  
150-mA Output Current at 3.3 V From 1.8-V  
Input  
•
•
•
•
Device Quiescent Current: 19 µA (Typ)  
Input Voltage Range: 0.9 V to 5.5 V  
Adjustable Output Voltage Up to 5.5 V  
Power-Save Mode Version Available for  
Improved Efficiency at Low Output Power  
•
•
•
Load Disconnect During Shutdown  
Overtemperature Protection  
Small 6-Pin Thin SOT23 Package  
APPLICATIONS  
•
All One-Cell, Two-Cell, and Three-Cell  
Alkaline, NiCd or NiMH or Single-Cell Li  
Battery-Powered Products  
Portable Audio Players  
PDAs  
Cellular Phones  
Personal Medical Products  
White LED Lighting  
The TPS6107x output voltage is programmed by an  
external resistor divider. The converter can be  
disabled to minimize battery drain. During shutdown,  
the load is completely disconnected from the battery.  
The device is packaged in a 6-pin thin SOT23  
package (DDC).  
•
•
•
•
•
(1) TPS61073 is in Product Preview status.  
L1  
V
O
VOUT  
FB  
SW  
µ
4.7  
H
C2  
10 µF  
3.3 V Up To  
100 mA  
R1  
R2  
VBAT  
EN  
o V  
0.9-V T  
O
C1  
10 µF  
GND  
TPS61070  
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.  
UNLESS OTHERWISE NOTED this document contains  
PRODUCTION DATA information current as of publication date.  
Products conform to specifications per the terms of Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2006–2007, Texas Instruments Incorporated  
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