LM2733

更新时间： 2024-11-24 22:51:55

品牌	Logo	应用领域
美国国家半导体 - NSC		转换器升压转换器
页数	文件大小	规格书
13页	505K
描述
0.6/1.6 MHz Boost Converters With 40V Internal FET

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LM2733 数据手册

February 2003

LM2733

0.6/1.6 MHz Boost Converters With 40V Internal FET

Switch in SOT-23

General Description

Features

n 40V DMOS FET switch

The LM2733 switching regulators are current-mode boost

converters operating fixed frequency of 1.6 MHz (“X” option)

and 600 kHz (“Y” option).

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

n Low R_DS(ON) DMOS FET

n Switch current up to 1A

n Wide input voltage range (2.7V–14V)

n Low shutdown current ( 1 µA)

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.

n 5-Lead SOT-23 package

n Uses tiny capacitors and inductors

n Cycle-by-cycle current limiting

n Internally compensated

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.

Applications

n White LED Current Source

n PDA’s and Palm-Top Computers

n Digital Cameras

Switch Frequency

n Portable Phones and Games

n Local Boost Regulator

1.6 MHz

0.6 MHz

Typical Application Circuit

20055424

20055457

20055401

20055458

DS200554

www.national.com

12 3 4 5 6 7...13

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