Datasheet > LM2731

LM2731

更新时间： 2024-10-27 22:51:55

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	525K
描述
0.6/1.6 MHz Boost Converters With 22V Internal FET Switch in SOT-23

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LM2731 数据手册

July 2003

LM2731

0.6/1.6 MHz Boost Converters With 22V Internal FET

Switch in SOT-23

General Description

The LM2731 switching regulators are current-mode boost

converters operating at fixed frequencies of 1.6 MHz (“X”

option) and 600 kHz (“Y” option).

Features

n 22V DMOS FET switch

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

n Low R_DS(ON) DMOS FET

The use of SOT-23 package, made possible by the minimal

power loss of the internal 1.8A switch, and use of small

inductors and capacitors result in the industry’s highest

power density. The 22V internal switch makes these solu-

tions perfect for boosting to voltages up to 20V.

n Switch current up to 1.8A

n Wide input voltage range (2.7V–14V)

n Low shutdown current ( 1 µA)

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

20059110

20059130

DS200591

www.national.com

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与LM2731相关器件

型号	品牌	获取价格	描述	数据表
LM2731_07	NSC	获取价格	0.6/1.6 MHz Boost Converters With 22V Internal FET Switch in SOT-23
LM2731_14	TI	获取价格	0.6/1.6 MHz Boost Converters With 22V Internal FET Switch in SOT-23
LM2731_15	TI	获取价格	0.6/1.6-MHz Boost Converters With 22-V Internal FET Switch in SOT-23
LM27313	TI	获取价格	LM27313/LM27313-Q1
LM27313	NSC	获取价格	1.6 MHz Boost Converter With 30V Internal FET Switch in SOT-23
LM27313_07	NSC	获取价格	1.6 MHz Boost Converter With 30V Internal FET Switch in SOT-23
LM27313-Q1	TI	获取价格	具有 30V 内部 FET 开关并采用 SOT-23 封装的 1.6MHz 升压转换器，符
LM27313XMF	NSC	获取价格	1.6 MHz Boost Converter With 30V Internal FET Switch in SOT-23
LM27313XMF	TI	获取价格	LM27313/LM27313-Q1
LM27313XMF/NOPB	TI	获取价格	具有 30V 内部 FET 开关并采用 SOT-23 封装的 1.6MHz 升压转换器 \|