TPS61097A-33_16 Datasheet, PDF (1/24 Pages) Texas Instruments – TPS61097A-33 Low-Input Voltage Synchronous-Boost Converter With Low Quiescent Current

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TPS61097A-33
SLVSCF2A – JANUARY 2014 – REVISED DECEMBER 2014
TPS61097A-33 Low-Input Voltage Synchronous-Boost Converter With Low Quiescent
Current
1 Features
•1 Up to 93% Efficiency at Typical Operating
Conditions
• Connection from Battery to Load via Bypass
Switch in Shutdown Mode
• Typical Shutdown Current Less Than 5 nA
• Typical Quiescent Current Less Than 5 μA
• Operating Input Voltage Range
From 0.9 V to 5.5 V
• Power-Save Mode for Improved Efficiency at Low
Output Power
• Overtemperature Protection
• Small 2.8-mm x 2.9-mm 5-Pin SOT-23 Package
2 Applications
• MSP430 Applications
• All Single-Cell, Two-Cell, and Three-Cell Alkaline,
NiCd, NiMH, or Single-Cell Li-Battery Powered
Products
• Personal Medical Products
• Fuel Cell and Solar Cell Powered Products
• PDAs
• Mobile Applications
• White LEDs
3 Description
The TPS61097A-33 provides a power supply solution
for products powered by either a single-cell, two-cell,
or three-cell alkaline, NiCd, or NiMH, or one-cell Li-
Ion or Li-polymer battery. They can also be used in
fuel cell or solar cell powered devices where the
capability of handling low input voltages is essential.
Possible output currents depend on the input-to-
output voltage ratio. The devices provide output
currents up to 100 mA at a 3.3-V output while using a
single-cell Li-Ion or Li-Polymer battery. The boost
converter is based on a current-mode controller using
synchronous rectification to obtain maximum
efficiency. The maximum average input current is
limited to a value of 400 mA. The converter can be
disabled to minimize battery drain. During shutdown,
the battery is connected to the load to enable battery
backup of critical functions on the load. The device is
packaged in a 5-pin SOT-23 package (DBV)
measuring 2.8 mm × 2.9 mm.
Device Information⁽¹⁾
PART NUMBER PACKAGE
BODY SIZE (NOM)
TPS61097A-33
SOT-23 (5)
2.90 mm × 2.90 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Typical Operating Application
L1
V
IN
0.9 V to 3.3V
C1
TPS61097A
L
VOUT
VIN
V
OUT
+3.3V
C2
EN
GND
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.