Datasheet > LM2733_07

LM2733_07

更新时间： 2024-11-05 04:44:35

品牌	Logo	应用领域
美国国家半导体 - NSC		转换器开关升压转换器
页数	文件大小	规格书
16页	404K
描述
0.6/1.6 MHz Boost Converters With 40V Internal FET Switch in SOT-23

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LM2733_07 数据手册

July 2007

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.

Features

40V DMOS FET switch

■

1.6 MHz (“X”), 0.6 MHz (“Y”) switching frequency

Low R_DS(ON) DMOS FET

Switch current up to 1A

Wide input voltage range (2.7V–14V)

Low shutdown current (<1 µA)

5-Lead SOT-23 package

These parts have a logic-level shutdown pin that can be used

to reduce quiescent current and extend battery life.

Uses tiny capacitors and inductors

Cycle-by-cycle current limiting

■

Protection is provided through cycle-by-cycle current limiting

and thermal shutdown. Internal compensation simplifies de-

sign and reduces component count.

Internally compensated

Applications

Switch Frequency

White LED Current Source

■

PDA’s and Palm-Top Computers

1.6 MHz

0.6 MHz

Digital Cameras

Portable Phones and Games

Local Boost Regulator

■

Typical Application Circuit

20055424

20055457

200554

www.national.com

12 3 4 5 6 7...16

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