MAX660

更新时间： 2024-11-20 22:12:35

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
11页	262K
描述
Switched Capacitor Voltage Converter

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数据手册

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MAX660 数据手册

November 1999

MAX660

Switched Capacitor Voltage Converter

General Description

Features

n Inverts or doubles input supply voltage

n Narrow SO-8 Package

The MAX660 CMOS charge-pump voltage converter inverts

a positive voltage in the range of 1.5V to 5.5V to the corre-

sponding negative voltage. The MAX660 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 effi-

ciency greater than 90% at most loads, the MAX660 pro-

vides ideal performance for battery powered systems. The

MAX660 may also be used as a positive voltage doubler.

n 6.5Ω typical output resistance

n 88% typical conversion efficiency at 100 mA

n Selectable oscillator frequency: 10 kHz/80 kHz

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 MAX660 with an external clock. A frequency con-

trol (FC) pin selects the oscillator frequency of 10 kHz or 80

kHz.

n Medical instruments

n Operational amplifier power supplies

n Interface power supplies

n Handheld instruments

Typical Application Circuits

Positive Voltage Doubler

Voltage Inverter

DS100898-1

DS100898-2

Connection Diagram

8-Lead SO

DS100898-5

Top View

Ordering Information

Order Number

Top Mark

Package

Supplied as

MAX660M

Date Code

MAX660M

M08A

Rail (95 units/rail)

MAX660MX

Date Code

MAX660M

M08A

Tape and Reel (2500 units/rail)

DS100898

www.national.com

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