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TPS60140

更新时间： 2024-11-17 22:52:55
品牌 Logo 应用领域
德州仪器 - TI 转换器DC-DC转换器泵
页数 文件大小 规格书
18页 478K
描述
LOW POWER DC-DC CONVERTER REGULATED 5 V, 100-mA CHARGE PUMP VOLTAGE TRIPLER

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TPS60140 数据手册

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TPS60140, TPS60141  
LOW POWER DC-DC CONVERTER  
REGULATED 5 V, 100-mA CHARGE PUMP VOLTAGE TRIPLER  
SLVS273– FEBRUARY 2000  
features  
applications  
Regulated 5 V ± 4% Output Voltage With up  
to 100 mA Output Current From a 1.8 V to  
3.6 V Input Voltage Range  
Replaces DC/DC Converters With Inductors  
in Battery-Powered Applications:  
– Two Battery Cells to 5 V Conversion  
– Portable Instruments  
– Miniature Equipment  
– Backup-Battery Boost Converters  
– Medical Instruments  
65-µA Quiescent Supply Current  
0.05-µA Shutdown Current, Battery Is  
Isolated From Load in Shutdown  
Integrated Low-Battery or Power-Good  
Indicator  
– 5-V Smart Card Supply  
– Organizers, PDAs  
Low Output Voltage Ripple Over Complete  
Output Current Range  
typical operating circuit  
Easy-To-Design With Low-EMI Power  
Supply Since no Inductors Are Required  
TPS60140  
OUT  
Output  
5 V, 100 mA  
Input  
1.8 V to 3.6 V  
Evaluation Module Available  
(TPS60140EVM-144)  
IN  
IN  
C
10 µF  
o
R1  
R2  
·
FB  
description  
R3  
Low  
Battery  
Warning  
LBI  
C1+  
C1–  
LBO  
C2+  
C2–  
The TPS6014x step-up, regulated charge pumps  
generate a 5-V ±4% output voltage from a 1.8 V  
to 3.6 V input voltage range. The devices are  
typically powered by two alkaline, NiCd, or NiMH  
battery cells and provide an output current of  
minimum 100 mA from a 2-V input. Only four  
external capacitors are needed to build a  
complete voltage tripler charge pump.  
C
i
C2  
2.2 µF  
4.7 µF  
C1  
2.2 µF  
ENABLE NC  
PGND GND  
OFF/ON  
The devices regulate the output by using the  
pulse-skiptopology. Thecontrollerisoptimizedfor  
lowest output voltage ripple over the complete output current range. The output peak current and therefore the  
output voltage ripple are drastically reduced compared to a conventional pulse-skip topology by regulating the  
charge pump output resistance. At light loads the maximum output resistance is limited to assure a low  
quiescent current.  
The TPS60140 includes a low-battery comparator that issues a warning if the battery voltage drops below a  
user-adjustable threshold voltage. The TPS60141 features a power-good output that goes active when the  
output voltage reaches 90% of its nominal value.  
The logic shutdown function disables the converter, reduces the supply current to a maximum of 1 µA and  
disconnects the output from the input. Special current-control circuitry prevents excessive current from being  
drawn from the battery during start-up. This dc-dc converter requires no inductors, therefore, EMI is of little  
concern. It is available in the small, thermally enhanced 20-pin TSSOP package (PWP).  
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.  
PowerPAD is a trademark of Texas Instruments Incorporated.  
Copyright 2000, Texas Instruments Incorporated  
PRODUCTION DATA information is 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.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...18

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 		LOW POWER DC-DC CONVERTER REGULATED 5 V, 100-mA CHARGE PUMP VOLTAGE TRIPLER
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 		LOW POWER DC-DC CONVERTER REGULATED 5 V, 100-mA CHARGE PUMP VOLTAGE TRIPLER
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 		SWITCHED CAPACITOR REGULATOR, 450kHz SWITCHING FREQ-MAX, PDSO20, GREEN, PLASTIC, HTSSOP-20
TPS60141PWPR TI

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TPS60141PWPRG4 TI

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 		0.1A SWITCHED CAPACITOR REGULATOR, 450kHz SWITCHING FREQ-MAX, PDSO20, GREEN, PLASTIC, HTSS
TPS60150 TI

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 		TPS60150 5V/140mA Charge Pump Device

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