Datasheet > CAT661_07

CAT661_07

更新时间： 2024-11-14 04:35:47

品牌	Logo	应用领域
CATALYST		泵
页数	文件大小	规格书
17页	173K
描述
High Frequency 100mA CMOS Charge Pump, Inverter/Doubler

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中文翻译

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CAT661_07 数据手册

CAT661

High Frequency 100mA CMOS Charge Pump, Inverter/Doubler

FEATURES

■ Converts V+ to V- or V+ to 2V+

■ Low output resistance, 10Ω max.

■ High power efficiency

■ Pin-compatible to MAX660, LTC660 with higher

frequency operation

■ Available in 8-pin SOIC andDIP packages

■ Lead-free, halogen-free package option

■ Selectable charge pump frequency of 25kHz

or 135kHz; optimize capacitor size.

■ Low quiescent current

APPLICATIONS

■ Negative voltage generator

■ Voltage doubler

■ Low EMI power source

■ Instrumentation

■ GaAs FET biasing

■ LCD contrast bias

■ Voltage splitter

■ Lithium battery power supply

■ Cellular phones, pagers

DESCRIPTION

The CAT661 is a charge-pump voltage converter. It can

invert a positive input voltage to a negative output. Only

two external capacitors are needed. With a guaranteed

100mAoutputcurrentcapability,theCAT661canreplace

a switching regulator and its inductor. Lower EMI is

achieved due to the absence of an inductor.

connected to V+. The operating frequency can also be

adjusted with an external capacitor at the OSC pin or by

driving OSC with an external clock.

Both 8-pin DIP and SO packages are available. For die

availability, contact Catalyst Semiconductor marketing.

The CAT661 can replace the MAX660 and the LTC660

in applications where higher oscillator frequency and

smaller capacitors are needed. In addition, the CAT661

is pin compatible with the 7660/1044, offering an easy

upgrade for applications with 100mA loads.

In addition, the CAT661 can double a voltage supplied

from a battery or power supply. Inputs from 2.5V to 5.5V

will yield a doubled, 5V to 11V output.

A Frequency Control pin (BOOST/FC) is provided to

select either a high (typically 135kHz) or low (25kHz)

internal oscillator frequency, thus allowing quiescent

current vs. capacitor size trade-offs to be made. The

135kHz frequency is selected when the FC pin is

TYPICAL APPLICATION

1.5V to 5.5V

Doubled

Positive

Voltage

Output

BOOST/FC

V+

OSC

BOOST/FC

CAP+

V+

OSC

^CAP+CAT661

GND

Inverted

Negative

Voltage

Output

CAT661

GND

CAP-

= 2.5V to 5.5V

CAP-

OUT

VOLTAGE INVERTER

POSITIVE VOLTAGE DOUBLER

Characteristics subject to change without notice

Doc. No. MD-5003, Rev. K

12 3 4 5 6 7...17

中文翻译

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与CAT661_07相关器件

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CAT661_12	ONSEMI	获取价格	High Frequency 100 mA CMOS Charge Pump, Inverter/Doubler
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CAT661ELA	ONSEMI	获取价格	High Frequency 100 mA CMOS Charge Pump, Inverter/Doubler
CAT661ELA	CATALYST	获取价格	High Frequency 100mA CMOS Charge Pump, Inverter/Doubler
CAT661EPA	CATALYST	获取价格	High Frequency 100mA CMOS Charge Pump, Inverter/Doubler
CAT661EPA	ONSEMI	获取价格	SWITCHED CAPACITOR CONVERTER, PDIP8, 0.300 INCH, PLASTIC, DIP-8
CAT661ERD8	CATALYST	获取价格	High Frequency 100mA CMOS Charge Pump, Inverter/Doubler
CAT661ERD8	ONSEMI	获取价格	IC SWITCHED CAPACITOR CONVERTER, DSO8, 4 X 4 MM, 0.80 MM HEIGHT, TDFN-8, Switching Regulat
CAT661ESA	CATALYST	获取价格	High Frequency 100mA CMOS Charge Pump, Inverter/Doubler
CAT661ESA-TE13	CATALYST	获取价格	High Frequency 100mA CMOS Charge Pump, Inverter/Doubler

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