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LM2733XMFX Datasheet

  • LM2733XMFX

  • 0.6/1.6 MHz Boost Converters With 40V Internal FET

  • 13頁(yè)

  • NSC

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LM2733 0.6/1.6 MHz Boost Converters With 40V Internal FET Switch in SOT-23
February 2003
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 (鈥淴鈥?option)
and 600 kHz (鈥淵鈥?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鈥檚 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.
Switch Frequency
X
1.6 MHz
Y
0.6 MHz
Features
n
n
n
n
n
n
n
n
n
n
40V DMOS FET switch
1.6 MHz (鈥淴鈥?, 0.6 MHz (鈥淵鈥? switching frequency
Low R
DS
(ON) DMOS FET
Switch current up to 1A
Wide input voltage range (2.7V鈥?4V)
Low shutdown current (
<
1 碌A(chǔ))
5-Lead SOT-23 package
Uses tiny capacitors and inductors
Cycle-by-cycle current limiting
Internally compensated
Applications
n
n
n
n
n
White LED Current Source
PDA鈥檚 and Palm-Top Computers
Digital Cameras
Portable Phones and Games
Local Boost Regulator
Typical Application Circuit
20055424
20055457
20055401
20055458
漏 2003 National Semiconductor Corporation
DS200554
www.national.com

LM2733XMFX 產(chǎn)品屬性

  • National Semiconductor (TI)

  • 3 V to 40 V

  • 1600 KHz

  • SMD/SMT

  • SOT-23

  • Reel

  • 1

  • 3000

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