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| 型号： | TPS63031DSKT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1.1 A SWITCHING REGULATOR, 2600 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封装： | 2.50 X 2.50 MM, PLASTIC, SON-10 |
| 文件页数： | 1/24页 |
| 文件大小： | 1326K |
| 代理商： | TPS63031DSKT |
1
FEATURES
APPLICATIONS
DESCRIPTION
L1
VIN
VINA
EN
PS/SYNC
GND
L2
VOUT
FB
PGND
L1
1.5H
C2
10F
C1
4.7F
VIN
1.8Vto
5.5V
VOUT
3.3Vupto
800mA
TPS63031
www.ti.com.................................................................................................................................................. SLVS696A – OCTOBER 2008 – REVISED MARCH 2009
HIGH EFFICIENCY SINGLE INDUCTOR BUCK-BOOST CONVERTER WITH 1-A SWITCHES
All Two-Cell and Three-Cell Alkaline, NiCd or
2
Up to 96% Efficiency
NiMH or Single-Cell Li Battery Powered
800-mA Output Current at 3.3V in Step Down
Products
Mode (VIN = 3.6V to 5.5V)
Portable Audio Players
Up to 500-mA Output Current at 3.3V in Boost
PDAs
Mode (VIN > 2.4V)
Cellular Phones
Automatic Transition Between Step Down and
Personal Medical Products
Boost Mode
White LEDs
Device Quiescent Current less than 50A
Input Voltage Range: 1.8V to 5.5V
Fixed and Adjustable Output Voltage Options
The TPS6303x devices provide a power supply
from 1.2V to 5.5V
solution for products powered by either a two-cell or
Power Save Mode for Improved Efficiency at
three-cell alkaline, NiCd or NiMH battery, or a
Low Output Power
one-cell Li-Ion or Li-polymer battery. Output currents
can go as high as 600 mA while using a single-cell
Forced Fixed Frequency Operation and
Li-Ion or Li-Polymer Battery, and discharge it down to
Synchronization Possible
2.5V or lower. The buck-boost converter is based on
Load Disconnect During Shutdown
a fixed frequency, pulse-width-modulation (PWM)
Over-Temperature Protection
controller using synchronous rectification to obtain
maximum
efficiency.
At
low
load
currents,
the
Available in Small 2,5-mm × 2,5-mm, QFN-10
converter enters Power Save mode to maintain high
Package
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
1000
mA.
The
output
voltage
is
programmable using an external resistor divider, or is
fixed internally on the chip. 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 2.5 mm × 2.5 mm (DSK).
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.
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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