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TPS63012 Datasheet(PDF) 1 Page - Texas Instruments

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No. de pieza TPS63012
Descripción Electrónicos  HIGHLY EFFICIENT,SINGLE INDUCTOR BUCK-BOOST CONVERTER WITH 2-A SWITCHES
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI - Texas Instruments

TPS63012 Datasheet(HTML) 1 Page - Texas Instruments

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1
FEATURES
DESCRIPTION
APPLICATIONS
L1
VIN
VINA
EN
PS
GND
L2
VOUT
FB
PGND
L1
1.5µH
C2
10µF
C1
10µF
VIN
1.8Vto
5.5V
VOUT
3.3V
1200mA
TPS63011
Upto
SYNC
VSEL
TPS63010
TPS63011
TPS63012
www.ti.com ........................................................................................................................................................ SLVS653A – JUNE 2008 – REVISED AUGUST 2009
HIGHLY EFFICIENT, SINGLE INDUCTOR BUCK-BOOST CONVERTER WITH 2-A
SWITCHES
• Up to 96% Efficiency
• 1200-mA Output Current at 3.3 V in Step Down
The TPS6301x devices provide a power supply
solution for products powered by either a two-cell or
Mode (VIN = 3.6 V to 5.5 V)
three-cell alkaline, NiCd or NiMH battery, or a
• Up to 800-mA Output Current at 3.3 V in Boost
one-cell Li-Ion or Li-polymer battery. Output currents
Mode (VIN > 2.4 V)
can go as high as 1200 mA while using a single-cell
• Automatic Transition between Step Down and
Li-Ion or Li-Polymer Battery, and discharge it down to
Boost Mode
2.5 V or lower. The buck-boost converter is based on
a fixed frequency, pulse-width-modulation (PWM)
• Device Quiescent Current less than 50µA
controller using synchronous rectification to obtain
• Input Voltage Range: 2 V to 5.5 V
maximum
efficiency.
At
low
load
currents,
the
• Fixed and Adjustable Output Voltage Options
converter enters Power Save mode to maintain high
from 1.2 V to 5.5 V
efficiency over a wide load current range. The Power
Save mode can be disabled, forcing the converter to
• Power Save Mode for Improved Efficiency at
operate at a fixed switching frequency. The maximum
Low Output Power
average current in the switches is limited to a typical
• Forced Fixed Frequency Operation and
value
of
2200
mA.
The
output
voltage
is
Synchronization possible
programmable using an external resistor divider, or is
• Load Disconnect During Shutdown
fixed internally on the chip. The converter can be
disabled to minimize battery drain. During shutdown,
• Output Overvoltage Protection
the load is disconnected from the battery. The device
• Overtemperature Protection
is packaged in a 20-pin WCSP package measuring
• Available in Small 20 pin 2.14 mm x 1.93 mm,
2.14 mm x 1.93 mm (YFF).
WCSP Package
Typical Application Circuit
• All 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 LEDs
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.
Copyright © 2008–2009, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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