LM2717

更新时间： 2024-10-26 22:51:55

品牌	Logo	应用领域
美国国家半导体 - NSC		转换器
页数	文件大小	规格书
12页	672K
描述
Dual Step-down DC/DC Converter

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数据手册

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LM2717 数据手册

PRELIMINARY

May 2005

LM2717

Dual Step-down DC/DC Converter

General Description

Features

n Fixed 3.3V output buck converter with a 2.2A, 0.16Ω,

internal switch

The LM2717 is composed of two PWM DC/DC buck (step-

down) converters. The first converter is used to generate a

fixed output voltage of 3.3V. The second converter is used to

generate an adjustable output voltage. Both converters fea-

ture low R_DSON(0.16Ω) internal switches for maximum effi-

ciency. Operating frequency can be adjusted anywhere be-

tween 300kHz and 600kHz allowing the use of small external

components. External soft-start pins for each enables the

user to tailor the soft-start times to a specific application.

Each converter may also be shut down independently with

its own shutdown pin. The LM2717 is available in a low

profile 24-lead TSSOP package ensuring a low profile over-

all solution.

n Adjustable buck converter with a 3.2A, 0.16Ω, internal

switch

n Operating input voltage range of 4V to 20V

n Input undervoltage protection

n 300kHz to 600kHz pin adjustable operating frequency

n Over temperature protection

n Small 24-Lead TSSOP package

Applications

n TFT-LCD Displays

n Handheld Devices

n Portable Applications

n Laptop Computers

Typical Application Circuit

20078501

DS200785

www.national.com

12 3 4 5 6 7...12

中文翻译

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与LM2717相关器件

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LM2717_08	NSC	获取价格	Dual Step-Down DC/DC Converter
LM2717-ADJ	NSC	获取价格	Dual Step-Down DC/DC Converter
LM2717-ADJ	TI	获取价格	LM2717-ADJ Dual Step-Down DC/DC Converter
LM2717-ADJ_08	NSC	获取价格	Dual Step-Down DC/DC Converter
LM2717-ADJ_15	TI	获取价格	LM2717-ADJ Dual Step-Down DC/DC Converter
LM2717MT	NSC	获取价格	Dual Step-down DC/DC Converter
LM2717MT/NOPB	NSC	获取价格	IC 3.2 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO24, LEAD FREE, TSSOP-24, Swi
LM2717MT/NOPB	TI	获取价格	双路降压直流/直流转换器 \| PW \| 24 \| -40 to 125
LM2717MT-ADJ	NSC	获取价格	Dual Step-Down DC/DC Converter
LM2717MT-ADJ/NOPB	NSC	获取价格	IC 3.5 A DUAL SWITCHING CONTROLLER, 720 kHz SWITCHING FREQ-MAX, PDSO24, LEAD FREE, TSSOP-2