LM2660

更新时间： 2024-09-28 00:01:07

品牌	Logo	应用领域
美国国家半导体 - NSC		转换器开关
页数	文件大小	规格书
13页	291K
描述
Switched Capacitor Voltage Converter

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数据手册

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LM2660 数据手册

September 1999

LM2660/LM2661

Switched Capacitor Voltage Converter

General Description

Features

n Inverts or doubles input supply voltage

n Narrow SO-8 and Mini SO-8 Package

n 6.5Ω typical output resistance

The LM2660/LM2661 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 LM2660/LM2661

uses two low cost capacitors to provide 100 mA of output

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

based converters. With an operating current of only 120 µA

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

LM2660/LM2661 provides ideal performance for battery

powered systems. The LM2660/LM2661 may also be used

as a positive voltage doubler.

n 88% typical conversion efficiency at 100 mA

n (LM2660) selectable oscillator frequency: 10 kHz/80 kHz

n (LM2661) low current shutdown mode

Applications

n Laptop computers

n Cellular phones

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 LM2660/LM2661 with an external clock. For

LM2660, a frequency control (FC) pin selects the oscillator

frequency of 10 kHz or 80 kHz. For LM2661, 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 0.5 µA. The oscillator frequency for the LM2661 is 80 kHz.

n Medical instruments

n Operational amplifier power supplies

n Interface power supplies

n Handheld instruments

Basic Application Circuits

Voltage Inverter

Positive Voltage Doubler

DS012911-3

DS012911-4

Splitting V_INin Half

DS012911-26

DS012911

www.national.com

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中文翻译

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与LM2660相关器件

型号	品牌	获取价格	描述	数据表
LM2660M	NSC	获取价格	Switched Capacitor Voltage Converter
LM2660M	TI	获取价格	LM2660 Switched Capacitor Voltage Converter
LM2660M/NOPB	TI	获取价格	LM2660 Switched Capacitor Voltage Converter
LM2660MDA	TI	获取价格	LM2660MDA
LM2660MM	TI	获取价格	LM2660 Switched Capacitor Voltage Converter
LM2660MM	NSC	获取价格	Switched Capacitor Voltage Converter
LM2660MM/NOPB	TI	获取价格	LM2660 Switched Capacitor Voltage Converter
LM2660MMX	TI	获取价格	SWITCHED CAPACITOR CONVERTER, 40kHz SWITCHING FREQ-MAX, PDSO8, MINI, SO-8
LM2660MMX/NOPB	TI	获取价格	SWITCHED CAPACITOR CONVERTER, 40kHz SWITCHING FREQ-MAX, PDSO8, MINI, SO-8
LM2660-MWC	TI	获取价格	100mA switched capacitor voltage converter 0-WAFERSALE -40 to 85