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TPS61070 Datasheet

  • TPS61070

  • 采用 ThinSOT-23 封裝的可調(diào)節(jié) 600mA 開關(guān) 90% 效率 PFM/PWM 升...

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  • TI

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TPS61070
TPS61071
SLVS510 鈥?JUNE 2004
90% EFFICIENT SYNCHRONOUS BOOST CONVERTER WITH 600-mA SWITCH
FEATURES
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90% Efficient Synchronous Boost Converter
鈥?75-mA Output Current at 3.3 V From 0.9-V
Input
鈥?150-mA Output Current at 3.3 V From 1.8-V
Input
Device Quiescent Current: 19 碌A(chǔ) (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
DESCRIPTION
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 enters the power-save mode to maintain a
high efficiency over a wide load current range. At the
TPS61071 the power-save mode is disabled, forcing
the converter to operate at a fixed switching fre-
quency. The maximum peak current in the boost
switch is typically limited to a value of 600 mA.
The TPS6107x output voltage is programmed by an
external resistor divider. The converter can be dis-
abled 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).
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鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
APPLICATIONS
All One-Cell, Two-Cell, and Three-Cell Alka-
line, NiCd or NiMH or Single-Cell Li
Battery-Powered Products
Portable Audio Players
PDAs
Cellular Phones
Personal Medical Products
White LED Lighting
L1
4.7
碌H
C1
0.9-V To V
O
10
碌F
SW
VBAT
EN
GND
VOUT
R1
FB
R2
C2
10
碌F
V
O
3.3 V Up To
100 mA
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.
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 漏 2004, Texas Instruments Incorporated

TPS61070 PDF文件相關(guān)型號

TPS62003,TPS62004,TPS62005,TPS62007,TPS62008

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