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TPS63021DSJR-TPS63021DSJT
High Efficiency Single Inductor Buck-Boost Converter with 4A Switch 14-VSON -40 to 85
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TPS63020, TPS63021SLVS916E –JULY 2010–REVISED MAY 2017
TPS6302x High Efficiency Single Inductor Buck-Boost Converter With 4-A Switches Features Input Voltage Range: 1.8Vto 5.5V Fixed and Adjustable Output Voltage Options from
1.2Vto 5.5V Upto 96% Efficiency 3-A Output Currentat 3.3Vin Step Down Mode
(VIN= 3.6Vto 5.5V) More than 2-A Output Currentat 3.3Vin Boost
Mode (VIN> 2.5V) Automatic Transition Between Step Down and
Boost Mode Dynamic Input Current Limit Device Quiescent Current less than50 μA Power Save Modefor Improved Efficiencyat Low
Output Power Forced Fixed Frequency Operationat 2.4 MHz
and Synchronization Possible Smart Power Good Output Load Disconnect During Shutdown Overtemperature Protection Overvoltage Protection Availableina 3mm× 4mm 14-Pin VSON Package
(DSJ) Createa Custom Design Using the TPS6302x
with the WEBENCH Power Designer
Applications All Two-Cell and Three-Cell Alkaline, NiCdor
NiMHor Single-CellLi Battery Powered Products Ultra Mobile PCs and Mobile Internet Devices Digital Media Players Digital Still Cameras (DSC) and Camcorders Mobile Phones and Smart Phones Personal Medical Products Industrial Metering Equipment High Power LEDs
SPACE
DescriptionThe TPS6302x devices providea power supply
solution for products poweredby eithera two-cell three-cell alkaline, NiCdor NiMH battery,ora
one-cell Li-ion or Li-polymer battery. Output
currents can go as high as3A while usinga
single-cell Li-ion or Li-polymer battery, and
dischargeit downto 2.5Vor lower. The buck-
boost converteris based ona 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 overa wide load current range. The
power save mode can be disabled, forcing the
converter to operate at a fixed switching
frequency. The maximum average currentin the
switchesis limitedtoa typical valueof4A. The
output voltageis programmable usingan external
resistor divider,oris fixed internally on the chip.
The converter can be disabled to minimize
battery drain. During shutdown, the load is
disconnected from the battery.
The TPS6302x devices operate overa free air
temperature rangeof –40°Cto 85°C. The devices
are packaged in a 14-pin VSON package
measuring 3mm× 4mm (DSJ).
Device Information(1)(1) Forall available packages, see the orderable addendumat
the endofthe data sheet.
Simplified Schematic Figure2. Efficiencyvs Output Current
