TPS61090RSAR ,Adjustable, 500-mA, 96% Efficient Boost Converter, 20uA, QFN-16 SLVS484C–JUNE 2003–REVISED DECEMBER 20145 Device Comparison Table(1) (2)T OUTPUT VOLTAGE DC-DC PAC ..
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TPS61090-TPS61090RSAR
Adjustable, 500-mA, 96% Efficient Boost Converter, 20uA, QFN-16
VOUT
2.2 μF
100 μF
LBI
e.g. 5 V up to
500 mAProduct
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SLVS484C
TPS6109x Synchronous Boost Converter With Features 3 DescriptionThe TPS6109x devices Synchronous (96% Efficient) Boost Converter solution for productsWith 500-mA Output Current From 1.8-V Input Ion or Li-Polymer,• Availableina 16-Pin VQFN4x4 Package NiMH battery and Device Quiescent Current:20 µA (Typ) higher than1A. The
output voltage thatis either adjusted by an external• Input Voltage Range: 1.8Vto 5.5V resistor divider or fixed internally on the chip.It• Adjustable Output Voltage Upto 5.5V Fixed provides high efficient power conversion and isOutput Voltage Options capableof delivering output currents upto 0.5Aat5 Power Save Modefor Improved Efficiencyat Low V at a supply voltage down to 1.8 V. The
Output Power implemented boost converteris based ona fixed
frequency, pulse-width- modulation (PWM) controller• Low Battery Comparator usinga synchronous rectifier to obtain maximum• Low EMI-Converter (Integrated Antiringing Switch) efficiency. Boost switch and rectifier switch are Load Disconnect During Shutdown connected internallyto provide the lowest leakage
inductance and best EMI behavior possible. The• Over-Temperature Protection maximum peak currentin the boost switchis limiteda valueof 2500 mA.
2 ApplicationsThe converter can be disabledto minimize battery• All Single CellLior Dual Cell Batteryor USB drain. During shutdown, the load is completelyPowered Operated Products disconnected from the battery.A low-EMI modeis– MP3 Player implementedto reduce ringing and,in effect, lower PDAs radiated electromagnetic energy when the converter
enters the discontinuous conduction mode.– Other Portable Equipment
The output voltage can be programmed by an
external resistor divideroris fixed internally on the
chip.
The deviceis packagedina 16-pin VQFN 4-mmx4- (16 RSA) package.
Device Information(1)(1) Forall available packages, see the orderable addendumat
the endofthe datasheet.
Simplified Application Schematic
