Datasheet Analog Devices LT1931AIS5#TRMPBF

LT1931/LT1931A
1.2MHz/2.2MHz Inverting
DC/DC Converters in ThinSOT
U FEATURES DESCRIPTIO ■ The LT®1931/LT1931A are the industry’s highest power
inverting SOT-23 current mode DC/DC converters. Both
parts include a 1A integrated switch allowing high current
outputs to be generated in a small footprint. The LT1931
switches at 1.2MHz while the LT1931A switches at 2.2MHz.
These high speeds enable the use of tiny, low cost
capacitors and inductors 2mm or less in height. The
LT1931 is capable of generating – 5V at 350mA or –12V
at 150mA from a 5V supply, while the LT1931A can
generate –5V at 300mA using significantly smaller inductors. Both parts are easy pin-for-pin upgrades for higher
power LT1611 applications. ■
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■ Fixed Frequency 1.2MHz/2.2MHz Operation
Very Low Noise: 1mVP-P Output Ripple …