Datasheet 搜索 > TI（德州仪器） > TPS63020DSJ 数据手册 > TPS63020DSJ 数据手册 1/24 页
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TPS63020DSJ 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
封装:
HVSON
描述:
与4 -A开关系列高效率单电感器降压 - 升压型转换器 HIGH EFFICIENCY SINGLE INDUCTOR BUCK-BOOST CONVERTER WITH 4-A SWITCHES
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TPS63020DSJ数据手册
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L1
VIN
VINA
EN
PS/SYNC
GND
L2
VOUT
FB
PGND
L1
1.5 µH
C2C1
V
IN
1.8 V to
5.5 V
V
OUT
3.3 V
up to 3 A
TPS63021
PG
Power Good
Output
TPS63020
TPS63021
www.ti.com
SLVS916 –APRIL 2010
HIGH EFFICIENCY SINGLE INDUCTOR BUCK-BOOST CONVERTER WITH 4-A SWITCHES
Check for Samples: TPS63020, TPS63021
1
FEATURES
APPLICATIONS
• All Two-Cell and Three-Cell Alkaline, NiCd or
2
• Up to 96% Efficiency
NiMH or Single-Cell Li Battery Powered
• 3A Output Current at 3.3V in Step Down Mode
Products
(VIN = 3.6V to 5.5V)
• Ultra Mobile PC's and Mobile Internet Devices
• More than 2A Output Current at 3.3V in Boost
• Digital Media Players
Mode (VIN > 2.5V)
• DSC's and Camcorders
• Automatic Transition Between Step Down and
• Cellular Phones and Smartphones
Boost Mode
• Personal Medical Products
• Dynamic Input Current Limit
• Industrial Metering Equipment
• Device Quiescent Current less than 50mA
• High Power LED's
• Input Voltage Range: 1.8V to 5.5V
• Fixed and Adjustable Output Voltage Options
DESCRIPTION
from 1.2V to 5.5V
The TPS6302x devices provide a power supply
• Power Save Mode for Improved Efficiency at
solution for products powered by either a two-cell or
Low Output Power
three-cell alkaline, NiCd or NiMH battery, or a
one-cell Li-Ion or Li-polymer battery. Output currents
• Forced Fixed Frequency Operation at 2.4MHz
can go as high as 3A while using a single-cell Li-Ion
and Synchronization Possible
or Li-Polymer Battery, and discharge it down to 2.5V
• Smart Power Good Output
or lower. The buck-boost converter is based on a
• Load Disconnect During Shutdown
fixed frequency, pulse-width-modulation (PWM)
controller using synchronous rectification to obtain
• Overtemperature Protection
maximum efficiency. At low load currents, the
• Overvoltage Protection
converter enters Power Save mode to maintain high
• Available in a 3 × 4-mm, QFN-14 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 4A. 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 14-pin QFN PowerPAD™ package
measuring 3 × 4 mm (DSJ).
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.
2PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2010, 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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