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TPS63031DSKRTIN/a6000avaiHigh Efficient Single Inductor Buck-Boost Converter with 1-A Switches 10-SON -40 to 85


TPS63031DSKR ,High Efficient Single Inductor Buck-Boost Converter with 1-A Switches 10-SON -40 to 85Features 3 DescriptionThe TPS6303x devices provide a power supply1• Input Voltage Range: 1.8 V to 5 ..
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TPS63031DSKR
High Efficient Single Inductor Buck-Boost Converter with 1-A Switches 10-SON -40 to 85
100 = 3.6 V, V = 3.3 VI O = 2.4 V, V = 3.3 VI O
Efficiency - %

VIN
VINA
PS/SYNC
GND
VOUT
PGND
TPS63031
VOUT
3.3 V up to
800 mA
2X10 µF
VIN
1.8 V to
5.5 V
10 µF 0.1µF
1.5 µH
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TPS63030, TPS63031

SLVS696C –OCTOBER 2008–REVISED OCTOBER 2015
TPS6303x High Efficiency Single Inductor Buck-Boost Converter With 1-A Switches Features 3 Description

The TPS6303x devices providea power supply Input Voltage Range: 1.8Vto 5.5V solution for products poweredby eithera two-cellor• Fixed and Adjustable Output Voltage Options from three-cell alkaline, NiCdor NiMH battery,ora one-1.2Vto 5.5V cell Li-ionor Li-polymer battery. Output currents can Upto 96% Efficiency goas highas 600 mA while usinga single-cell Li-ion Li-polymer battery, and dischargeit downto 2.5V• 800-mA Output Currentat 3.3Vin Step-Down or lower. The buck-boost converteris based onaMode (VIN= 3.6Vto 5.5V) fixed frequency, pulse width modulation (PWM)• Upto 500-mA Output Currentat 3.3Vin Boost controller using synchronous rectification to obtainMode (VIN> 2.4V) maximum efficiency. At low load currents, the Automatic Transition Between Step-Down and converter enters power-save modeto maintain high
efficiency overa wide load current range. The power-Boost Mode
save mode can be disabled, forcing the converterto• Device Quiescent Current less than50 μA operateata fixed switching frequency. The maximum• Power-Save Mode for Improved Efficiencyat Low average currentin the switchesis limitedtoa typicalOutput Power value of 1000 mA. The output voltage is
programmable using an external resistor divider,oris• Forced Fixed Frequency Operation and
fixed internally on the chip. The converter can beSynchronization Possible disabledto minimize battery drain. During shutdown,• Load Disconnect During Shutdown the loadis disconnected from the battery.• Overtemperature Protection The TPS6303x devices operate overa free air• Availableina Small 2.5-mm× 2.5-mm 10-Pin temperature rangeof –40°Cto 85°C. The devices areVSON Package (QFN) packagedina 10-pin VSON package measuring 2.5× 2.5 mm (DSK).2 Applications
Device Information(1)
• All Two-Cell and Three-Cell Alkaline, NiCdorNiMHor Single-CellLi Battery Powered Products• Portable Audio Players• Mobile Phones
(1) Forall available packages, see the orderable addendumat• Personal Medical Products the endofthe data sheet. White LEDs
Typical Application Schematic Efficiencyvs Output Current
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