LM2733YMF+ National Semiconductor, LM2733YMF+ Datasheet
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LM2733YMF+
Manufacturer Part Number
LM2733YMF+
Description
Manufacturer
National Semiconductor
Specifications of LM2733YMF+
Notes
NEW
Date_code
10+
© 2007 National Semiconductor Corporation
LM2733
0.6/1.6 MHz Boost Converters With 40V Internal FET Switch
in SOT-23
General Description
The LM2733 switching regulators are current-mode boost
converters operating fixed frequency of 1.6 MHz (“X” option)
and 600 kHz (“Y” option).
The use of SOT-23 package, made possible by the minimal
power loss of the internal 1A switch, and use of small induc-
tors and capacitors result in the industry's highest power
density. The 40V internal switch makes these solutions per-
fect for boosting to voltages of 16V or greater.
These parts have 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.
Typical Application Circuit
1.6 MHz
Switch Frequency
X
0.6 MHz
Y
200554
20055424
Features
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Applications
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40V DMOS FET switch
1.6 MHz (“X”), 0.6 MHz (“Y”) switching frequency
Low R
Switch current up to 1A
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
White LED Current Source
PDA’s and Palm-Top Computers
Digital Cameras
Portable Phones and Games
Local Boost Regulator
DS
(ON) DMOS FET
20055457
www.national.com
July 2007