LM27313_07 Datasheet, PDF (1/12 Pages) National Semiconductor (TI) – 1.6 MHz Boost Converter With 30V Internal FET Switch in SOT-23

July 2007
LM27313
1.6 MHz Boost Converter With 30V Internal FET Switch in
SOT-23
General Description
The LM27313 switching regulator is a current-mode boost
converter with a fixed operating frequency of 1.6 MHz.
The use of the SOT-23 package, made possible by the mini-
mal losses of the 800 mA switch, and small inductors and
capacitors result in extremely high power density. The 30V
internal switch makes these solutions perfect for boosting to
voltages of 5V to 28V.
This part has a logic-level shutdown pin that can be used to
reduce quiescent current and extend battery life.
Protection is provided through cycle-by-cycle current limiting
and thermal shutdown. Internal compensation simplifies de-
sign and reduces component count.
Features
■ ^{30V DMOS FET switch}
■ ^{1.6 MHz switching frequency}
■ ^{Low R}_DS^{(ON) DMOS FET}
■ ^{Switch current up to 800 mA}
■ ^{Wide input voltage range (2.7V–14V)}
■ ^{Low shutdown current (<1 µA)}
■ ^{5-Lead SOT-23 package}
■ ^{Uses tiny capacitors and inductors}
■ ^{Cycle-by-cycle current limiting}
■ ^{Internally compensated}
Applications
■ ^{White LED Current Source}
■ ^{PDA’s and Palm-Top Computers}
■ ^{Digital Cameras}
■ ^{Portable Phones, Games and Media Players}
■ ^{GPS Devices}
Typical Application Circuits
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© 2007 National Semiconductor Corporation 202168
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