Datasheet > LM2663MDC

LM2663MDC

更新时间： 2024-11-23 21:16:35

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
12页	281K
描述
IC,DC/DC CONVERTER,-1.5/-5.5/+5/+11V,CMOS,DIE

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技术参数
数据手册

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LM2663MDC 技术参数

生命周期：	Obsolete	包装说明：	, DIE OR CHIP
Reach Compliance Code：	unknown	风险等级：	5.84
最大输入电压：	5.5 V	最小输入电压：	1.5 V
最大输出电流：	0.2 A	最大输出电压：	11 V
最小输出电压：	5 V	封装等效代码：	DIE OR CHIP
认证状态：	Not Qualified	子类别：	Other Analog ICs
技术：	CMOS	Base Number Matches：	1

LM2663MDC 数据手册

January 1999

LM2662/LM2663

Switched Capacitor Voltage Converter

General Description

Features

n Inverts or doubles input supply voltage

n Narrow SO-8 Package

The LM2662/LM2663 CMOS charge-pump voltage con-

verter inverts a positive voltage in the range of 1.5V to 5.5V

to the corresponding negative voltage. The LM2662/LM2663

uses two low cost capacitors to provide 200 mA of output

current without the cost, size, and EMI related to inductor

based converters. With an operating current of only 300 µA

and operating efficiency greater than 90% at most loads, the

LM2662/LM2663 provides ideal performance for battery

powered systems. The LM2662/LM2663 may also be used

as a positive voltage doubler.

n 3.5Ω typical output resistance

n 86% typical conversion efficiency at 200 mA

n (LM2662) selectable oscillator

frequency: 20 kHz/150 kHz

n (LM2663) low current shutdown mode

Applications

n Laptop computers

n Cellular phones

n Medical instruments

n Operational amplifier power supplies

n Interface power supplies

n Handheld instruments

The oscillator frequency can be lowered by adding an exter-

nal capacitor to the OSC pin. Also, the OSC pin may be used

to drive the LM2662/LM2663 with an external clock. For

LM2662, a frequency control (FC) pin selects the oscillator

frequency of 20 kHz or 150 kHz. For LM2663, an external

shutdown (SD) pin replaces the FC pin. The SD pin can be

used to disable the device and reduce the quiescent current

to 10 µA. The oscillator frequency for LM2663 is 150 kHz.

Basic Application Circuits

Voltage Inverter

Splitting V_INin Half

DS100003-1

Positive Voltage Doubler

DS100003-3

DS100003-2

DS100003

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