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TPS61097-33DBVR
0.9Vin, 3.3Vout Boost Converter with Bypass Switch
TPS61097-33
0.9 V to 3.3V
VOUT
GND
VIN
+3.3V
OUT
TPS61097
www.ti.com SLVS872C –JUNE 2009–REVISED DECEMBER 2011
LOW INPUT VOLTAGE SYNCHRONOUS BOOST CONVERTER
WITH LOW QUIESCENT CURRENT
Checkfor Samples: TPS61097
1FEATURES Upto 95% Efficiencyat Typical Operating APPLICATIONS
Conditions •
MSP430 Applications Connection from Batteryto Load via Bypass •
All Single-Cell, Two-Cell, and Three-CellSwitchin Shutdown Mode Alkaline, NiCd, NiMH,or Single-Cell Li-Battery Typical Shutdown Current Less Than5 nA Powered Products Typical Quiescent Current Less Than5 μA •
Personal Medical Products Operating Input Voltage Range •
Fuel Cell and Solar Cell Powered Products
From 0.9Vto 5.5V •
PDAs Power-Save Mode for Improved Efficiencyat •
Mobile ApplicationsLow Output Power •
White LEDs•
Overtemperature Protection Small 2.8-mmx 2.9-mm 5-Pin SOT-23 Package
(6-Pin for Adjustable)
DESCRIPTIONThe TPS61097 providea power supply solution for products powered by eithera single-cell, two-cell,or
three-cell alkaline, NiCd,or NiMH,or one-cell Li-Ionor Li-polymer battery. They can also be usedin fuel cellor
solar cell powered devices where the capabilityof handling low input voltagesis essential. Possible output
currents depend on the input-to-output voltage ratio. The devices provides output currents upto 100 mAata
3.3-V output while usinga single-cell Li-Ion or Li-Polymer battery. The boost converteris based ona
current-mode controller using synchronous rectificationto obtain maximum efficiency. The maximum average
input currentis limitedtoa valueof 350 mA. The output voltage can be programmed by an external resistor
divider,oritis fixed internally on the chip. The converter can be disabledto minimize battery drain. During
shutdown, the batteryis connectedto the loadto enable battery backupof critical functions on the load. The
fixed output deviceis packagedina 5-pin SOT-23 package (DBV) measuring 2.8 mm× 2.9 mm.
Not Recommended for New Designs – see TPS61097A-33
