Datasheet

1
FEATURES
APPLICATIONS
DESCRIPTION
L1
VIN
VINA
EN
PS/SYNC
GND
L2
VOUT
FB
PGND
L1
2.2µH
C2
10µF
C1
10µF
V
IN
1.8Vto
5.5V
V
OUT
3.3Vupto
1200mA
TPS63000
TPS63000-Q1
www.ti.com
...................................................................................................................................................................................................... SLVS968 JUNE 2009
HIGH-EFFICIENCY SINGLE INDUCTOR BUCK-BOOST CONVERTER WITH 1.8-A SWITCH
23
Qualified for Automotive Applications Load Disconnect During Shutdown
Up to 96% Efficiency Over-Temperature Protection
1200-mA Output Current at 3.3 V in Step Down Available in Small 3 mm × 3 mm, QFN-10
Mode (VIN = 3.6 V to 5.5 V) Package
Up to 800-mA Output Current at 3.3 V in Boost
Mode (VIN > 2.4 V)
All Two-Cell and Three-Cell Alkaline, NiCd or
Automatic Transition between Step Down and
NiMH or Single-Cell Li Battery Powered
Boost Mode
Products
Device Quiescent Current Less Than 50 µ A
Portable Audio Players
Input Voltage Range: 1.8 V to 5.5 V
PDAs
Adjustable Output Voltage From 1.2 V to 5.5 V
Cellular Phones
Power Save Mode for Improved Efficiency at
Personal Medical Products
Low Output Power
White LEDs
Forced Fixed Frequency Operation and
Synchronization Possible
The TPS63000 devices provide a power supply solution for products powered by either a two-cell or three-cell
alkaline, NiCd or NiMH battery, or a one-cell Li-Ion or Li-polymer battery. Output currents can go as high as 1200
mA while using a single-cell Li-Ion or Li-Polymer battery, and discharge it down to 2.5 V or lower. The buck-boost
converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using synchronous rectification
to obtain maximum efficiency. At low load currents, the converter enters Power Save mode to maintain high
efficiency over a wide load current range. The Power Save mode can be disabled, forcing the converter to
operate at a fixed switching frequency. The maximum average current in the switches is limited to a typical value
of 1800 mA. The output voltage is programmable using an external resistor divider. The converter can be
disabled to minimize battery drain. During shutdown, the load is disconnected from the battery. The device is
packaged in a 10-pin QFN PowerPAD™ package measuring 3 mm × 3 mm (DRC).
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.
2 PowerPAD is a trademark of Texas Instruments.
3 All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 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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