HT7660 Holtek, HT7660 Datasheet

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HT7660

Manufacturer Part Number

HT7660

Description

Manufacturer

Holtek

Datasheets

1.HT7660.pdf (10 pages)

2.HT7660.pdf (9 pages)

3.HT7660.pdf (9 pages)

Specifications of HT7660

Case

SOP-8

Date_code

0123

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Meier Automation Equipment Co., Limited

Part Number:

HT7660

Manufacturer:

HOLTEK/合泰

Quantity:

20 000

Company:

Amily Shenzhen XNWY Technology Co., Ltd

Amily Shenzhen XNWY Technology Co., Ltd

Part Number:

HT7660

0

Company:

H&T Electronics

H&T Electronics

Part Number:

HT7660

Quantity:

10 850

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Features

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Applications

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General Description

HT7660 is a monolithic CMOS switched-capaci-

tor voltage converter. HT7660 is designed to

complete a voltage conversion from positive to

negative. The only required external compo-

nents are two low cost electrolytic capacitors.

HT7660 includes a voltage regulator, an RC os-

cillator and four output power MOS switches.

Block Diagram

Simple conversion of V

Cascade connection (two devices are

connected, V

Boost pin for higher switching frequency

Easy to use

RS-232 power supply

On board negative supply for dynamic

RAMS

Supply voltage splitter, V

-

BOOST

Requires only two external capacitors

OSC

LV

CMOS Switched-Capacitor Voltage Converter

OUT

Oscillator

= -2 V

RC

DD

DD

)

O

to -V

= ± V

Regulator

Voltage

VSS

DD

DD

/2

Level Shifter

Voltage

1

·

·

·

·

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·

The frequency of an RC oscillator can be low-

ered by adding an external capacitor between

V

be connected to the OSC pin to replace the origi-

nal oscillator. The LV terminal may be tied to

VSS to disable the voltage regulator. By doing

this, low voltage operation can be improved.

DD

No external diode required

Typically with no load voltage conversion,

99.9% efficiency

Typical power efficiency is 98%

Wide operating voltage range: 3V to 12V

Operation amplifier supply

Data acquisition systems

Positive voltage doubler

and the OSC pin, or an external clock can

Network

Logic

November 30, 1999

HT7660

VDD

CAP+

CAP

VOUT

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