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TPS61070 Datasheet(PDF) 1 Page - Texas Instruments

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No. de Pieza. TPS61070
Descripción  90% EFFICIENT SYNCHRONOUS BOOST CONVERTER WITH 600-mA SWITCH
Descarga  21 Pages
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Fabricante  TI [Texas Instruments]
Página de inicio  http://www.ti.com
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TPS61070 Datasheet(HTML) 1 Page - Texas Instruments

 
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FEATURES
DESCRIPTION
APPLICATIONS
SW
C1
10 µF
L1
4.7 µH
VBAT
VOUT
FB
C2
10 µF
EN
GND
TPS61070
VO
3.3VUp To
100mA
R1
R2
0.9-V ToVO
TPS61070, TPS61071
TPS61072, TPS61073
SLVS510A – JULY 2006 – REVISED JANUARY 2007
90% EFFICIENT SYNCHRONOUS BOOST CONVERTER WITH 600-mA SWITCH
• 90% Efficient Synchronous Boost Converter
The TPS6107x devices provide a power supply
solution for products powered by either a one-cell,
75-mA Output Current at 3.3 V From 0.9-V
two-cell, or three-cell alkaline, NiCd or NiMH, or
Input
one-cell Li-ion or Li-polymer battery. Output currents
150-mA Output Current at 3.3 V From 1.8-V
can go as high as 75 mA while using a single-cell
Input
alkaline, and discharge it down to 0.9 V. It can also
• Device Quiescent Current: 19 µA (Typ)
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
• Input Voltage Range: 0.9 V to 5.5 V
on a fixed frequency, pulse-width-modulation (PWM)
• Adjustable Output Voltage Up to 5.5 V
controller using a synchronous rectifier to obtain
• Power-Save Mode Version Available for
maximum
efficiency.
At
low
load
currents
the
Improved Efficiency at Low Output Power
TPS61070 and TPS61073(1) enter the power-save
mode to maintain a high efficiency over a wide load
• Load Disconnect During Shutdown
current range. The power-save mode is disabled in
• Overtemperature Protection
the TPS61071 and TPS61072, forcing the converters
• Small 6-Pin Thin SOT23 Package
to operate at a fixed switching frequency. The
maximum peak current in the boost switch is typically
limited to a value of 600 mA.
• All One-Cell, Two-Cell, and Three-Cell
The TPS6107x output voltage is programmed by an
Alkaline, NiCd or NiMH or Single-Cell Li
external resistor divider. The converter can be
Battery-Powered Products
disabled to minimize battery drain. During shutdown,
• Portable Audio Players
the load is completely disconnected from the battery.
The device is packaged in a 6-pin thin SOT23
• PDAs
package (DDC).
• Cellular Phones
• Personal Medical Products
• White LED Lighting
(1)
TPS61073 is in Product Preview status.
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
Copyright © 2006–2007, Texas Instruments Incorporated
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.


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