Datasheet

L1
VIN
VINA
EN
PS
GND
L2
VOUT
FB
PGND
L1
1.5µH
C2
10µ
F
C1
10µF
V
IN
1.8Vto
5.5V
V
OUT
3.3V
1200mA
TPS63011
Upto
SYNC
VSEL
TPS63010
TPS63011
TPS63012
www.ti.com
SLVS653B JUNE 2008REVISED MAY 2012
HIGHLY EFFICIENT, SINGLE INDUCTOR BUCK-BOOST CONVERTER WITH 2-A
SWITCHES
Check for Samples: TPS63010, TPS63011, TPS63012
1
FEATURES
DESCRIPTION
Up to 96% Efficiency
The TPS6301x devices provide a power supply
1200-mA Output Current at 3.3 V in Step Down
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 one-
Up to 800-mA Output Current at 3.3 V in Boost
cell Li-Ion or Li-polymer battery. Output currents can
Mode (VIN > 2.4 V)
go as high as 1200 mA while using a single-cell Li-
Ion or Li-Polymer Battery, and discharge it down to
Automatic Transition between Step Down and
2.5 V or lower. The buck-boost converter is based on
Boost Mode
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
converter enters Power Save mode to maintain high
Fixed and Adjustable Output Voltage Options
efficiency over a wide load current range. The Power
from 1.2 V to 5.5 V
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
value of 2200 mA. The output voltage is
Forced Fixed Frequency Operation and
programmable using an external resistor divider, or is
Synchronization possible
fixed internally on the chip. The converter can be
Load Disconnect During Shutdown
disabled to minimize battery drain. During shutdown,
Output Overvoltage Protection
the load is disconnected from the battery. The device
is packaged in a 20-pin WCSP package measuring
Overtemperature Protection
2.126 mm x 1.922 mm (YFF).
Available in Small 20 pin 2.126 mm x 1.922
mm, WCSP Package
Figure 1. Typical Application Circuit
APPLICATIONS
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 © 2008–2012, 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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